Protocol Registries

IANA is responsible for maintaining many of the codes and numbers contained in a variety of Internet protocols, enumerated below. We provide this service in coordination with the Internet Engineering Task Force (IETF).

To view the various protocol registries, just click on their titles. To apply to modify a registry, use the relevant form. The qualifications for changing a protocol vary depending on the governing standards documents.

Protocol/RegistryDefining Document/Comments
Ad Hoc On Demand Distance Vector (AODV)
AODV Message TypesRFC 3561
Standards action. (section 12)
Extension TypeRFC 3561
Standards action. (section 12)
Address Family Numbers
Address Family NumbersRFC 2453, RFC 2858
25-16383: Standards Action with Early Assignment 16384-32767: FCFS 32768-65535: Reserved
Address Resolution Protocol (ARP) Parameters
Hardware TypesRFC 826
(?)
Inverse Address Resolution Protocol Operation CodesRFC 826
(?)
Protocol TypeRFC 826
See the following registry: http://www.iana.org/assignments/ethernet-numbers
Applicable Exchange Core (APEX) Parameters
APEX Endpoint ApplicationsRFC 3340
Expert review (Appendix B)
APEX OptionsRFC 3340
Expert review (Appendix B)
APEX ServicesRFC 3340
Expert review (Appendix B)
Application Access Protocol (ACAP) Parameters
ACAP CapabilitiesRFC 2244
Recommended working group review (section 7.1)
ACAP Response CodesRFC 2244
Recommended working group review (section 7.2)
Dataset ClassesRFC 2244
RFC (standards track or experimental) (section 7.3)
Vendor SubtreeRFC 2244
FCFS (section 7.4)
Atom Link Relations
Atom Link RelationsRFC 4287
IESG Approval (via request to IANA)
Authenticated Encryption with Associated Data (AEAD) Parameters
AEAD AlgorithmsRFC 5116
1-32767: Specification Required. 32768-65535: Private Use.
Authentication and Key Agreement (AKA)
Version NamespaceRFC 3310
Expert Review (Experts: Vesa Torvinen-Primary, Jari Arkko-Secondary)
Authentication Option Name Spaces
Please look under Dynamic Host Configuration Protocol (DHCP)
Authentication, Authorization, and Accounting (AAA) Parameters
Application IDsRFC 3588
0-16777215 - Standards Track 16777216-4294967294 - Vendor-Specific (First Come First Served) (section 11.3)
AVP CodesRFC 3588
Allocated by a designated expert with a specification. If more than 3 are needed, IETF consensus. (Expert-Bert Wijnen) (section 11.1.1)
AVP Flags ValueRFC 3588
Standards Action Process (section 11.1.2)
AVP Specific ValuesRFC 3588
IETF consensus (section 11.4)
Command CodesRFC 3588
314-16,777,213 Unallocated (IETF Consensus) (section 11.2.1)
Command FlagsRFC 3588
0-7: Standards Action (section 11.2.2)
Automatic Responses to Electronic Mail Parameters
Auto-Submitted header field keywordsRFC 3834
IETF Consensus
Auto-Submitted header field optional parametersRFC 3834
IETF Consensus
Autonomous System (AS) Numbers
AS Numbers (Blocks of 1024 Numbers)RFC 1930
RIR request to the IANA
Binary Floor Control Protocol (BFCP) Parameters
Attribute SubregistryRFC 4582
Standards-Track RFC
Error Code SubregistryRFC 4582
Standards-Track RFC
Primitive SubregistryRFC 4582
Standards-Track RFC
Request Status SubregistryRFC 4582
Standards-Track RFC
Blocks Extensible Exchange Protocol (BEEP) Parameters
BEEP FeaturesRFC 3080
Expert review (Appendix B) (Expert-Marshall T. Rose)
BEEP ProfilesRFC 3080
Expert review (Appendix B) (Expert-Marshall T. Rose)
Border Gateway Protocol (BGP) Parameters
BGP Cease NOTIFICATION message subcodesRFC 4486
Standards Action or Early IANA Allocation process
BGP Data Collection Standard CommunitiesRFC 4384
IETF Consensus [usually through the Global Routing Operations Working Group (grow)]
BGP Error CodesRFC 4271
Standards Action or Early IANA Allocation process
BGP Error SubcodesRFC 4271
Standards Action or Early IANA Allocation process
BGP Extended Communities TypesRFC 4360
regular, transitive 0x90-0xbf : Standards Action/Early Allocation 0x00-x3f : FCFS regular, non-transitive 0xd0-0xff : Standards Action/Early Allocation 0x40-0x7f : FCFS extended, transitive 0x9000-0xbfff : Standards Action/Early Allocation 0x0000-0x3ffff : FCFS extended, non-transitive 0xd000-0xffff : Standards Action/Early Allocation 0x4000-0x7fff : FCFS
BGP Message TypesRFC 4271
Standards Action or Early IANA Allocation process
BGP Path AttributesRFC 4271
Standards Action or Early IANA Allocation process
Capability CodesRFC 3392
Values 1-63: IETF consensus Values 64-127: FCFS
IPv4 Address Specific Extended CommunityRFC 4360
First Come First Serve
Opaque Extended CommunityRFC 4360
First Come First Serve
Two-octet AS Specific Extended CommunityRFC 4360
First Come First Serve
Well-known CommunitiesRFC 1997
Not Defined
Building Blocks
Building BlocksRFC 3048
RFC (specification required) (section 6)
Caller-ID Numbering Plans
TokensRFC 3939
Standards-track RFC
Candidate Access Router Discovery (CARD) Parameters
SEAMOBY AVP Type RegistryRFC 4065
Expert Review (Expert - James Kempf)
SEAMOBY Experimental Mobility Protocol Subtype RegistryRFC 4065
Specification Required and IESG Review
SEAMOBY Layer 2 Access Technology Identifier RegistryRFC 4065
Specification Required
CERT RR Certificate Types
Certificate TypesRFC 4398
0x0000 through 0x00FF - IETF Standards Action 0xFF00 through 0xFFFF - IETF Standards Action 0x0100 through 0xFEFF - IETF Consensus (based on RFC documentation of the certificate type).
Character Sets
Character SetsRFC 2978
Expert Review (Primary Expert Ned Freed and Secondary Expert Martin Duerst)
Mailing List InformationRFC 2978
N/A
Registration TemplatesRFC 2978
Expert Review (Primary Expert Ned Freed and Secondary Expert Martin Duerst)
Common Name Resolution Protocol (CNRP) Parameters
Properties, Property Types, and Status MessagesRFC 3367
FCFS (section 10)
Common Open Policy Service (COPS) Protocol Parameters
A-Types and Sub-TypesRFC 3182
0-127: IETF consensus 128-255: Private use (section 8)
Auth_Session X-Types and Sub-TypesRFC 3520
0-127: IETF consensus 128-255: Private use (section 8)
C-Num and C-Type ValuesRFC 2748
IETF consensus (section 6)
Client Types ValuesRFC 2748
0x001-0x3FF: COPS extension document 0x4000-0x7FFF: Private Use 0x8000-0xFFFF: FCFS (section 6)
Error sub-codes defined for messages containing Client-type = 0RFC 4261
IETF Consensus
Error ValuesRFC 3182
0-32767: IETF consensus 32768-65535: Private use (section 8)
M-Types, Reason Sub-Codes, and Error Sub-CodesRFC 2748
Same IANA considerations as respective client type (section 6)
P-TypeRFC 2750
0-49151: IETF Consensus. 49152-53247: Vendor-specific, First Come First Served. 53248-65535: Reserved for Private Use.
R-Types, Reason-Codes, Report-Types, Decision Object Command-Codes/Flags, and Error CodesRFC 2748
IETF consensus (section 6)
S-Num, S-Types, and Error-CodesRFC 3084
IETF consensus (section 9)
X-Types and Sub Types(?)
Common Presence and Instant Messaging (CPIM)
CPIM HeadersRFC 3862
Standards Track RFC
Context Labels for Internet Messages
Internet Messages Content TypesRFC 3458
RFC (specification required) (section 8)
Context Transfer Protocol (CXTP) Parameters
SEAMOBY Context Transfer Profile Type RegistryRFC 4065
Expert Review (Expert - James Kempf)
SEAMOBY Context Transfer Protocol Authorization Token Calculation AlgorithmsRFC 4065
Specification Required
Cryptographic Suites for IKEv1, IKEv2, and IPsec
IdentifiersRFC 4308
RFC and expert review (Expert - Tero Kivinen)
Cryptographically Generated Addresses (CGA) Name Space
CGA Extension Type ValuesRFC 4581
Standards Action
CGA SECRFC 4982
Standards Action
CGA Type TagsRFC 3972
First Come First Serve (FCFS)
Datagram Congestion Control Protocol (DCCP) Parameters
Ack Vector StatesRFC 4340
Standards Track RFC
Congestion Control IdentifiersRFC 4340
IETF Consensus (IETF RFC publication)
Drop CodesRFC 4340
Standards Track RFC
Feature NumbersRFC 4340
IETF Consensus (IETF RFC publication)
Option TypesRFC 4340
IETF Consensus (IETF RFC publication)
Packet TypesRFC 4340
Standards Track RFC
Port NumbersRFC 4340
0-49151: Review of application template (section 19.9) Reviewer: Eddie Kohler 49152-65535: Private Use
Profile for DCCP Congestion Control ID 2: TCP-like Congestion Control Parameters - Feature NumbersRFC 4341
Standards Track RFC
Profile for DCCP Congestion Control ID 2: TCP-like Congestion Control Parameters - Option TypesRFC 4341
Standards Track RFC
Profile for DCCP Congestion Control ID 2: TCP-like Congestion Control Parameters - Reset CodesRFC 4341
Standards Track RFC
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Feature NumbersRFC 4342
Standards Track RFC
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Option TypesRFC 4342
Standards Track RFC
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Reset CodesRFC 4342
Standards Track RFC
Reset CodesRFC 4340
IETF Consensus (IETF RFC publication)
Service CodesRFC 4340
Specification Required or First Come First Serve
Delegation Signer Resource Record
Digest AlgorithmsRFC 3658
Standards Action
Delivery Status Notification (DSN) Types
address-types, diagnostic-types, MTA-name-typesRFC 3464
(?)
Diameter
AAA ParametersRFC 3588
See AAA-Parameters
Differentiated Services Field Codepoints
PoolsRFC 2474
Pool 1: Standards Action Pool 2: Experimental or local use/standardized assignments if Pool 1 exhausted (section 6)
Directory System Names
Directory System NamesRFC 4520
Registry Closed
DNS Header Flags and EDNS Header Flags
DNS Header FlagsRFC 2535
KEY RR flag bits 2 and 8-11 and all flag extension field bits: IETF consensus NAMTYP bits and bits 4 and 5: IETF standards action (section 11)
EDNS Header FlagsRFC 2671
Extended Label Type or Version Number: IESG approval Option Code: RFC (section 7)
DNSSEC NSEC3 Parameters
DNSSEC NSEC3 FlagsInternet Draft draft-ietf-dnsext-nsec3-13
Standards Action
DNSSEC NSEC3 Hash AlgorithmsInternet Draft draft-ietf-dnsext-nsec3-13
Standards Action
DNSSEC NSEC3PARAM FlagsInternet Draft draft-ietf-dnsext-nsec3-13
Standards Action
Domain Name System (DNS)
KEY FlagsRFC 3755
Standards Action
SSHFP Resource Record ParametersRFC 4255
IETF Consensus
Domain Name System (DNS) Key Resource Record Protocol Octet
DNS Key Resource Record Protocol Octet ValuesRFC 2535
Registry now closed by RFC 3445.
Domain Name System (DNS) Parameters
DHCID RR type codesRFC 4701
Standards Action
DNS EDNS0 OptionsRFC 5001
Specification required
Domain System ClassRFC 2929
(?)
Domain System Operation CodeRFC 1035 and RFC 2929
IETF Standards Action.
Domain System Response CodeRFC (?)
(?)
Resource Record (RR) Types and Q-TypesRFC 1035 and RFC 2929
Expert Review (Experiment Expert - Ed Lewis)
Domain Name System (DNS) Security Algorithm Numbers
DNS Security Algorithm NumbersRFC 2535
5-251: IETF standards action 253-254: Private use (section 11)
Dynamic Host Configuration Protocol (DHCP)
Algorithm Name Space ValuesRFC 3118
IETF consensus (section 6)
Protocol Name Space ValuesRFC 3118
IETF consensus (section 6)
RDM Name Space ValuesRFC 3118
IETF consensus (section 6)
Dynamic Host Configuration Protocol (DHCP) and Bootstrap Protocol (BOOTP)
Authentication Suboption (value 8) number-spaces - Algorithm identifier valuesRFC 4030
IETF Consensus
Authentication Suboption (value 8) number-spaces - RDM Algorithm identifier valuesRFC 4030
IETF Consensus
BOOTP Vendor Extensions and DHCP OptionsRFC 2939
IETF Consensus
CableLabs Client Configuration Option Ticket Control Mask Bit DefinitionsRFC 3594
IETF Consensus (section 5)
DHCP Agent Sub-Option CodesRFC 3046
IETF Consensus
DHCP Cablelabs Client Configuration Option Type 122 Sub-Option CodesRFC 3495
IETF Consensus
DHCP Message Type 53 ValuesRFC 2939
IETF Consensus
GeoConf Option fields - The Altitude (AT) FieldRFC 3825
Standards Action
GeoConf Option fields - The Datum fieldRFC 3825
Standards Action
Network/IP Option Type 63 Sub-Option CodesRFC 2242
?
Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
DHCPv6 Mobile IPv6 Sub-option CodesInternet Draft draft-ietf-mip6-hiopt-17
Standards Action or IESG Approval
DUIDsRFC 3315
Standards Action Process (section 24.5)
Dynamic Host Configuration Protocol (DHCP) Message TypesRFC 3315
Standards Action Process (section 24.2)
Dynamic Host Configuration Protocol (DHCP) OptionsRFC 3315
Standards Action Process (section 24.3)
Home Network Information Option Id-type CodesInternet Draft draft-ietf-mip6-hiopt-17
Standards Action or IESG Approval
OPTION_LQ_QUERY optionRFC 5007
Standards Action
Status CodesRFC 3315
Standards Action Process (section 24.4)
Dynamic Source Routing Protocol (DSR)
DSR Protocol OptionsRFC 4728
Expert Review (Experts - David B. Johnson, David A. Maltz and Yih-Chun Hu)
DSR Protocol Route Error TypesRFC 4728
Expert Review (Experts - David B. Johnson, David A. Maltz and Yih-Chun Hu)
Electronic Commerce Language (ECML)
Parameter ValuesRFC 4112
IESG Approval
Electronic Commerce Language Version 2 (ECMLv2)
Ecom_Payment_Card_Protocol RegistryRFC 4112
Expert Review (Expert - Donald Eastlake)
Ecom_Payment_Card_Type RegistryRFC 4112
Expert Approval (Expert - Donald Eastlake)
Ecom_Transaction_Type RegistryRFC 4112
Expert Review (Expert - Donald Eastlake)
Enterprise Numbers
Enterprise NumbersRFC 2578
First Come First Serve. (use online template) http://pen.iana.org/pen/PenApplication.page
ENUM - Telephone Number Mapping
Enumservice RegistrationsRFC 3761
Require an RFC approved by the IESG
Ethernet Numbers
Ethernet NumbersRFC (?)
(?)
Extensible Provisioning Protocol (EPP)
EPP Repository IDsRFC 3730
FCFS
Extensible Authentication Protocol (EAP)
EAP EXT_Type NumbersRFC 4764
Designated Expert with Specification Required
EAP Initiate and Finish AttributesInternet Draft draft-ietf-hokey-erx-14
IETF Consensus
EAP-AKA and EAP-SIM ParametersRFC 4187
Specification Required
EAP-FAST Error-TLV Error-CodesRFC 4851
Specification Required
EAP-FAST TLV TypesRFC 4851
Specification Required
EAP-IKEv2 PayloadsRFC 5106
Expert Review
EAP-PAX ADE Type NamespaceRFC 4746
IESG Expert via EAP WG mailing list
EAP-PAX DH Group ID NamespaceRFC 4746
IESG Expert via EAP WG mailing list
EAP-PAX MAC ID NamespaceRFC 4746
IESG Expert via EAP WG mailing list
EAP-PAX Public Key ID NamespaceRFC 4746
IESG Expert via EAP WG mailing list
EAP-POTP Cryptographic Algorithm IdentifiersRFC 4793
Specification Required and IESG Approval
EAP-SAKE messagesRFC 4763
IETF Consensus with Specification Required
EAP-SAKE non-skippable attributesRFC 4763
IETF Consensus with Specification Required
EAP-SAKE skippable attributesRFC 4763
IETF Consensus with Specification Required
EAP-TTLS AVP UsageInternet Draft draft-funk-eap-ttls-v0-05
IETF Consensus
Message TypesInternet Draft draft-ietf-hokey-erx-14
IETF Consensus
Method TypesRFC 3748
20, 46-191: Designated Expert with Specification Required 192-253: Standards Action 256-4294967295: Allocated after 1-191, on the advice of a designated expert, with specification required. (Expert-EAP Working Group Chair or person designated by EAP Chair)
Packet CodesRFC 3748
Standards Action
Re-authentication CryptosuitesInternet Draft draft-ietf-hokey-erx-14
IETF Consensus
Request-Action TLV Action CodesRFC 4851
Specification Required
Fibre Channel (FC)
Port TypesRFC 4044
Standard Range: 1-9999 Expert Review and Specification Required (Expert - Claudio DeSanti); Private Use: 10000-99999
Foobar AF Numbers
Foobar AF NumbersRFC 1639
IANA assignment (section 2)
FTP parameters
OS specific FTP parametersRFC 3659
See Specific Parameters under Operating System Names
Generalized Multi-Protocol Label Switching (GMPLS) Signaling Parameters
ActionsRFC 3471
IETF Consensus action or documented in a specification (section 12)
Administrative Status Information FlagsRFC 4783
IETF Standards Action RFC
Association TypeRFC 4872
IETF Standards Action RFC
Generalized PID (G-PID)RFC 3471
0-31743 IETF Standards Track RFC 31744-32767 Assigned Temporarily for Experimental Usage 32768-65535 Not Assigned
Interface_ID TypesRFC 3471
IETF Consensus action or documented in a specification (section 12)
LSP Encoding TypesRFC 3471
0-239 IETF Standards Track RFC 240-255 Assigned temporarily for Experimental Usage (Not registered with IANA)
Switching TypesRFC 3471
0-255 IETF Standards Track RFC
Generic Routing Encapsulation (GRE) Parameters
GRE Protocol TypesRFC 2784
IANA does not assign
GRE Version NumbersRFC 2784
IETF Consensus
Generic Security Service Application Program Interface (GSSAPI) Service Names
GSSAPI/Kerberos/SASL Service NamesRFC 2743
Specification Required. Registrations are restricted to alpha-numeric, plus the following characters: '+', '-' and '.'
Geopriv Location Object Registries
Method Tokens associated with the PIDF-LO ObjectRFC 4119
First Come First Serve
XML Namespaces for 'provided-by' elements for use with PIDF-LO objectsRFC 4119
Expert Review (Allison Mankin-Primary, Jon Peterson-Secondary)
Geopriv Location Type Registries
CAtypesRFC 4776
Specification Required, Expert Review (Martin Thomson)
Location Type RegistryRFC 4589
Expert Review (Martin Thomson) Section 5.1
Location Type Registry XMLRFC 4589
Expert Review (Martin Thomson) Section 5.1
Global Switch Management Protocol version 3 (GSMPv3) Parameters
GSMPv3 Adaptation Type Name SpaceRFC 3292
0x000-0x2FF: IETF consensus 0x300-0xFFF: FCFS (section B5)
GSMPv3 Event Flag Type Name SpaceRFC 3292
Expert Review (Experts - Stefaan De Cnodder and Avri Doria)
GSMPv3 Failure Response Message Name SpaceRFC 3292
0-59, 80-127, 160-255: IETF consensus 60-79, 128-159: Reserved for vendor private use (section B4)
GSMPv3 Label Type Name SpaceRFC 3292
0x000-0xAFF: IETF consensus 0xB00-0xEFF: RFC 0xF00-0xFFF: Reserved for vendor private use (section B2)
GSMPv3 Message Type Name SpaceRFC 3292
0-99: IETF consensus 100-199: RFC 200-249: RFC 250-255: Reserved for vendor private use (section B1)
GSMPv3 Model Type Name SpaceRFC 3292
0: IETF consensus 1-200: RFC 201-255: Reserved for vendor private use (B6)
GSMPv3 Port Type Name SpaceRFC 3292
0-127: IETF consensus 128-255: RFC (section B7)
GSMPv3 Result Type Name SpaceRFC 3292
Expert review (Experts - Stefaan De Cnodder and Avri Doria)
GSMPv3 Service ID Type Name SpaceRFC 3292
0-1023: IETF consensus 1024-65535: RFC (section B8)
GSMPv3 Traffic Control Type Name SpaceRFC 3292
Expert Review (Experts - Stefaan De Cnodder and Avri Doria)
Global Switched Telephone Network (GSTN) Extensions
Qual2-LabelRFC 2846
(?)
Qualif-Type 1RFC 2846, RFC 3191, RFC 3192
RFC (section ?)
Service SelectorRFC 2846 and 3191
RFC (section ?)
Group Domain of Interpretation (GDOI)
Payload Type ValuesRFC 3547
Standards Action
Hash Function Textual Names
Hash Function NamesRFC 4572
Standards-track RFCs which update or obsolete [RFC3279]
Host Identity Protocol (HIP) Parameters
DI-TypesRFC 5201
IETF Consensus
Group IDsRFC 5201
IETF Consensus
HIP VersionRFC 5201
IETF Consensus
Notify Message TypesRFC 5201
1-50: IETF Consensus. 51-8191: First Come First Served with Specification Required. 8192-16383: Private Use. 16384-40959: First Come First Served with Specification Required. 40960-65535: Private Use.
Packet TypesRFC 5201
IETF Consensus
Parameter TypesRFC 5201
0-1023: IETF Consensus. 1024-32767: First Come First Served with Specification Required. 32768-49141: Private Use. 49142-61439: First Come First Served with Specification Required. 61440-65535: IETF Consensus.
Registration Failure TypesRFC 5203
0-200: IETF Consensus. 201-255: Private Use.
Registration TypesRFC 5203
0-200: IETF Consensus. 201-255: Private Use.
Suite IDsRFC 5201
IETF Consensus
Hypertext Transfer Protocol (HTTP) Digest Algorithm Values
HTTP Digest Algorithm ValuesRFC 3230
Specification Required
Hypertext Transfer Protocol (HTTP) Parameters
Content-Coding ValuesRFC 2616
First Come First Serve with specification recommended
Transfer-Coding ValuesRFC 2616
First Come First Serve with specification recommended
Hypertext Transfer Protocol (HTTP) Status Codes
HTTP Status CodesRFC 2817
RFC and FCFS (section 10.2)
Hypertext Transfer Protocol (HTTP) Upgrade Tokens
HTTP Upgrade TokensRFC 2817
FCFS (must follow rules set forth in BCP 26) (section 7)
IANA Maintained MIBs
IANA Address Family Numbers MIB(?)
IANA Charset MIBRFC 3808
See Character Sets
IANA Finisher MIBRFC 3806
(?)
IANA GMPLS TC MIBRFC 4802
See individual GMPLS registry procedures
IANA ifTypes MIBRFC 2863
Expert Review (Experts - Dan Romascanu and Keith McCloghrie)
IANA IP Route Protocol MIBRFC 2932
RFC or expert review (Expert - Dave Thaler)
IANA IPPM Metrics Registry MIBRFC 4148
Specification Required
IANA ITU Alarm TC MIBRFC 3877
(?)
IANA Language MIB DefinitionsRFC 3165
Expert Review (Experts - Juergen Schoenwaelder and David Levi)
IANA MALLOC MIBRFC 3559
RFC or designated expert review. (section 4) (Expert - Dave Thaler)
IANA MAU MIBRFC 4836
Operations and Management Area Director (Dan Romascanu); 'hubmib' working group chair (Bert Wijnen)
IANA Printer MIBRFC 3805
(?)
IANA Tn3270eTC MIBRFC 2561
Working Group Review (see DESCRIPTION clause associated with the MODULE-IDENTITY statement)
IEEE 802 Numbers
IEEE 802 NumbersRFC (?)
Assigned by IEEE standards office
IETF Protocol Parameter Identifiers
IETF URN Sub-namespace for Registered Protocol ParametersRFC 3553
IETF Consensus
Instance Manipulation Values
Instance Manipulation ValuesRFC (?)
(?)
Instant Messaging SRV Protocol
Label RegistryRFC 3861
Specification Required
Integrated Service Parameters
Compression HintsRFC 3006
IETF Consensus
Parameter NamesRFC 2216
1-127: Parameters defined in RFC 2215 128-254: Parameters defined by author of service specification document (Service and Data Element Naming)
Service NamesRFC 2216
2-127: RFC 127 and above: Experimental use (Service and Data Element Naming)
Internationalized Domain Names (IDN)
IANA Repository of TLD IDN PracticesRFC 3743
See http://www.iana.org/assignments/idn/
Internet Application Protocol
Collation RegistryRFC 4790
Expert review via mailing list (Expert - Arnt Gulbrandsen)
Internet Control Message Protocol (ICMP) Parameters
"Code" FieldsRFC (?)
(?)
ICMP Extension Objects ClassesRFC 4950
0-246 First Come First Serve 247-255 Private Use
ICMP Type NumbersRFC 2939 (?)
RFC (section 7)
Internet Control Message Protocol version 6 (ICMPv6) Parameters
"Code" FieldsRFC 2463 (?)
(?)
FMIPv6 Message TypesInternet Draft draft-ietf-mipshop-fmipv6-rfc4068bis-07.tx
RFC Required
IPv6 Neighbor Discovery Option FormatsRFC 2463 (?)
(?)
IPv6 Type NumbersRFC 2463 (?)
(?)
QtypesInternet Draft draft-ietf-ipngwg-icmp-name-lookups-15
IETF Consensus
Internet Group Management Protocol (IGMP) Type Numbers
"Code" FieldsRFC 3228
IESG approval or standards action (section 2)
IGMP Type NumbersRFC 3228
IESG approval or standards action (section 2)
Internet Key Exchange (IKE) Attributes
IKE AttributesRFC 2409
RFC (standards track) (section 11.1)
Internet Key Exchange Version 2 (IKEv2) Parameters
Authentication MethodsRFC 4306
Expert Review (Expert-Tero Kivinen)
Certificate EncodingsRFC 4306
Expert Review (Expert-Tero Kivinen)
Configuration Payload Attribute TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Configuration Payload CFG TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Diffie-Hellmann Transform IdsRFC 4306
Expert Review (Expert-Tero Kivinen)
Encryption Transform IDsRFC 4306
Expert Review (Expert-Tero Kivinen)
Exchange TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Identification Payload ID TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Integrity Algorithm Transform IDsRFC 4306
Expert Review (Expert-Tero Kivinen)
Notification IPCOMP Transform IDsRFC 4306
Expert Review (Expert-Tero Kivinen)
Notify Message TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Payload TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Pseudo-random Function Transform IDsRFC 4306
Expert Review (Expert-Tero Kivinen)
Security Protocol IdentifiersRFC 4306
Expert Review (Expert-Tero Kivinen)
Traffic Selector TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Transform Attribute TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Transform TypesRFC 4306
Expert Review (Expert-Tero Kivinen)
Internet Message Access Protocol (IMAP) 4 Capabilities
IMAP 4 CapabilitiesRFC 3501
IETF Consensus
IMAP Threading AlgorithmsInternet Draft draft-ietf-imapext-sort-20
Standards Track or IESG-Approved Experimental RFC
IMAP4 List ExtendedInternet Draft draft-ietf-imapext-list-extensions-18
IANA approval Template is at [RFCietf-imapext-list-extensions-18.txt] section 9.3
Internet Open Trading Protocol (IOTP) Codes
IOTP CodesRFC 2801
(?) (Expert-David Burdett)
Internet Printing Protocol (IPP) Registrations
Attribute Group TagsRFC 2911
Expert review/assignment (Expert-Carl Uno Manros)
Attribute SyntaxesRFC 2911
Expert review/assignment (section 6.3) (Expert-Carl Uno Manros)
Enum Attribute ValuesRFC 2911
type1: IETF consensus type2: Mailing list and expert review (Expert-Carl Uno Manros) type3: Expert review (possible mailing list) (Expert-Carl Uno Manros) (section 6.1)
Keyword Attribute ValuesRFC 2911
type1: IPP specification document revision or IETF standards track document type2: Mailing list and expert review (Expert-Carl Uno Manros) type3: Mailing list and expert review (Expert-Carl Uno Manros)
OperationsRFC 2911
RFC (standards track) and expert review/assignment (section 6.4) (Expert-Carl Uno Manros)
Out-of-Band Attribute Group TagsRFC 2911
Expert review/assignment (section 6.6) (Expert-Carl Uno Manros)
Status CodesRFC 2911
Expert review/assignment (section 6.6) (Expert-Carl Uno Manros)
Internet Protocol (IP) Option Numbers
IP Option NumbersRFC 2780
IESG Approval, IETF Consensus or Standards Action
IP Time to Live ParameterRFC (?)
(?)
Recommended values for TOSRFC (?)
(?)
Internet Protocol (IP) Version Number
IP TOS ParamtersRFC (?)
(?)
IP Version NumberRFC (?)
(?)
Internet Protocol version 4 (IPv4) Address Space
IPv4 Address SpaceRFC 2050
IANA allocates to Regional Internet Registries (RIR's) based on established need. (section 1.3)
Internet Protocol version 4 (IPv4) Type of Service (TOS) Byte and Internet Protocol version 6 (IPv6) Traffic Class Octet
IPv4 TOS Byte and IPv6 Traffic Class OctetRFC 3168
RFC (section 23)
Internet Protocol version 6 (IPv6) Address Space
IPv6 Address SpaceRFC 2373
Defined and Registered by the IANA.
Internet Protocol version 6 (IPv6) Anycast Address Allocations
IPv6 Anycast Address AllocationsRFC 2373
(?)
Internet Protocol version 6 (IPv6) Global Unicast Allocations
IANA IPv6 Special Purpose Address RegistryRFC 4773
IETF Consensus
IPv6 Global Unicast AllocationsRFC 2928
Contact IANA for information.
Internet Protocol Version 6 (IPv6) Low Power Personal Area Network Parameters
Dispatch Type FieldRFC 4944
Specification Required
Short Address FieldsRFC 4944
Specification Required
Internet Protocol version 6 (IPv6) Multicast Address Allocations
Address AllocationsRFC 3307
Expert Review (Expert-Marshall Eubanks)
Internet Protocol version 6 (IPv6) Parameters
IPv6 ParametersRFC (?)
(?)
Internet Protocol version 6 (IPv6) Router Alert Option Values
IPv6 Router Alert Option ValuesRFC 2711
IETF consensus (section 5)
Internet Protocol version 6 (IPv6) Sub-Top Level Aggregation (TLA) Identifier Assignments
IPv6 Sub-TLA Assignments (DEPRECATED)RFC 2450
IANA assignment to registries. Registries assign Sub-TLA's ID's to organizations meeting requirements. (section 5.1)
Internet Security Association and Key Management Protocol (ISAKMP) Identifiers
ISAKMP IdentifiersRFC (?)
(?)
Signature Encoding Algorithm ValuesRFC 4359
Standards Action
Internet Storage Name Service (iSNS)
Block Storage ProtocolsRFC 4171
Expert Review (by IPS WG Chair or designated expert - David Black)
Standard iSNS AttributesRFC 4171
IETF Consensus
Internet/Xerox Network System (XNS) Protocol Mappings
Internet/XNS Protocol MappingsRFC 1764
(?)
Intrusion Detection Exchange Protocol (IDXP)
OptionsRFC 4767
Expert Review (Expert - Ben Feinstein)
Intrusion Detection Message Exchange Format (IDMEF) Parameters
Attribute ValuesRFC 4765
Specification Required by RFC
Class Names and Attribute NamesRFC 4765
IETF Consensus
IP Flow Information Export (IPFIX)
IPFIX Information ElementsRFC 5102
Expert Review (Primary expert - Nevil Brownlee and Secondary expert - Juergen Quittek)
IPFIX MPLS label typeRFC 5102
Expert Review (Primary expert - Nevil Brownlee and Secondary expert - Juergen Quittek)
IPFIX Set IDsRFC 5101
Standards Action
IPFIX Version NumbersRFC 5101
Standards Action
IPS Protocol
Protocol Number fieldRFC 3643
Standards Track RFCs approved by the IESG
IPSec
asn1-modulesRFC 4301
Specification Required
IPsec Resource Record Parameters
Algorithm Type FieldRFC 4025
IETF Consensus
Gateway Type FieldRFC 4025
Standards Action
IPv6 Multicast Permanent Group Identifiers
Group Identifier ValuesRFC 3307
Expert Review (Expert - Marshall Eubanks)
Robust Header Compression (ROHC) Configuration Option Suboption Identifier Values(?)
IS-IS
Bandwidth Constraints Model IdentifiersRFC 4124
0-239: Specification Required. 240-255: Private Use.
IS-IS Multi-Topology ID ValuesRFC 5120
0-3995: Expert Review. 3996-4095: Private Use.
TLV CodepointsRFC 3563
Expert review. (section 3.3.1) (Expert-ISIS WG chairs)
iSCSI
iSCSI authenication methods registryRFC 3720
iSCSI digests registryRFC 3720
iSCSI extended key registryRFC 3720
SRP_GROUP key valuesRFC 3720
Kerberized Internet Negotiation of Keys (KINK)
Error CodesRFC 4430
Standards Action or non standards-track RFCs with Expert Review. (Though full specification may be a public and permanent document of a standards body other that the IETF, an RFC referring to it is needed). (Experts - Shoichi Sakane and Ken'ichi Kamada)
Message TypesRFC 4430
Standards Action or non standards-track RFCs with Expert Review. (Though full specification may be a public and permanent document of a standards body other that the IETF, an RFC referring to it is needed). (Experts - Shoichi Sakane and Ken'ichi Kamada)
Next Payload TypesRFC 4430
Standards Action or non standards-track RFCs with Expert Review. (Though full specification may be a public and permanent document of a standards body other that the IETF, an RFC referring to it is needed). (Experts - Shoichi Sakane and Ken'ichi Kamada)
Kerberos Parameters
Checksum Type NumbersRFC 3961
See: RFC3961 (expert-Ken Raeburn)
Encryption Type NumbersRFC 3961
See: RFC3961 (expert-Ken Raeburn)
Kerberos TCP ExtensionsRFC 5021
IESG Approval or Standards Action
Label Distribution Protocol (LDP) Name Spaces
Experiment ID Name SpaceRFC 3036
0x00000000 - 0xefffffff: FCFS 0xf0000000 - 0xffffffff: Private use (section 4.5)
Forwarding Equivalence Class (FEC) Type Name SpaceRFC 3036
0-127: IETF consensus 128-191: FCFS 192-255: Private use (section 4.3)
Message Type Name SpaceRFC 3036
0x0000-0x3DFF: IETF consensus 0x3E00-0x3EFF: Vendor private use 0x3F00-0x3EFF: Experimental use (section 4.1)
Status Code Name SpaceRFC 3036
0x00000000-0x1FFFFFFF: IETF consensus 0x20000000 - 0x3EFFFFFF: FCFS 0x3F000000 - 0x3FFFFFFF: Private Use (section 4.4)
Table, Length, and Value (TLV) Type Name SpaceRFC 3036
0x0000-0x3DFF: IETF consensus 0x3E00-0x3EFFF: Vendor private use 0x3F00-0x3EFF: Experimental use (section 4.1)
Language Tags
Language Subtag RegistryRFC 4646
Expert Review (Experts - Michael Everson and Doug Ewell)
Language Subtag Registry - Registration TemplatesRFC 4646
These are the Registration Templates only.
Language Tag Extensions RegistryRFC 4646
IESG Approval
Language Tags - OBSOLETERFC 4646
No further registrations in this registry.
Language Tags Directory - OBSOLETERFC 4646
No further registrations in this registry.
Layer Two Tunneling Protocol (L2TP) Parameters
ATM Alarm Status AVP (Attribute Type 88) ValuesRFC 4454
Circuit Status Reason values for the SLI message - Expert Review General ATM Alarm failures - Expert Review
ATM-Specific Sublayer bitsRFC 4454
IETF Consensus
Control Message AVP'sRFC 3438
Expert review (section 2.1) Carlos Pignataro (primary) Ron Da Silva (secondary) Ignacio Goyret (secondary)
Message Type AVP ValuesRFC 3438
Expert Review (section 2.2) Carlos Pignataro (primary) Ron Da Silva (secondary) Ignacio Goyret (secondary)
Remaining ValuesRFC 3438
Expert review (section 2.4) Carlos Pignataro (primary) Ron Da Silva (secondary) Ignacio Goyret (secondary)
Result Code AVP ValuesRFC 3438
Expert review (section 2.3)Carlos Pignataro (primary) Ron Da Silva (secondary) Ignacio Goyret (secondary)
Lightweight Directory Access Protocol (LDAP)
Attribute Description OptionsRFC 4520
x- Private Use (can not be registered) e- Reserved for Experiments, First Come First Serve All others: Standards Action or Expert Review with Specification (Expert - Kurt Zeilenga)
Bind Authentication MethodRFC 4520
0-1023 Standards Action (can not start with e- or x-) 1024-4095 Expert Review with Specification Required (can not start with e- or x-)(Expert - Kurt Zeilenga) 4096-16383 First Come First Serve (Shall start with e-) 16384 and higher Private Use (Shall start with x-)
LDAP authzid prefixesRFC 4520
x- Private Use e- Reserved for Experiments, First Come First Serve All others, Standards Action or Expert Review with Specification Required (Expert - Kurt Zeilenga)
LDAP Filter ChoicesRFC 4520
Standards Action
LDAP ModifyRequest OperationsRFC 4520
0-1023 Standards Action (can not start with e- or x-) 1024-4095 Expert Review with Specification Required (can not start with e- or x-)(Expert - Kurt Zeilenga) 4096-16383 First Come First Serve (Shall start with e-) 16384 and higher Private Use (Shall start with x-)
LDAP Search ScopesRFC 4520
0-1023 Standards Action (can not start with e- or x-) 1024-4095 Expert Review with Specification Required (can not start with e- or x-)(Expert - Kurt Zeilenga) 4096-16383 First Come First Serve (Shall start with e-) 16384 and higher Private Use (Shall start with x-)
LDAP SyntaxesRFC 4520
First Come First Serve with Specification Required
LDAPMessage typesRFC 4520
Standards Action
Object Identifier DescriptorsRFC 4520
x- Private Use (can not be registered) e- Reserved for Experiments, First Come First Serve All others: Expert Review (Expert - Kurt Zeilenga)
pcimSchema LDAP DescriptorsRFC 3703
(tbd)
Protocol MechanismsRFC 4520
First Come First Serve
Result Code valuesRFC 4520
0-1023 Standards Action (can not start with e- or x-) 1024-4095 Expert Review with Specification Required (can not start with e- or x-)(Expert - Kurt Zeilenga) 4096-16383 First Come First Serve (Shall start with e-) 16384 and higher Private Use (Shall start with x-)
Link Management Protocol (LMP)
LMP Message TypesRFC 4204
21-127: Standards Action 128-247: Expert Review (Expert - Dimitri Papadimitriou)
LMP Object Class and Class Type (C-Type)RFC 4204
See each individual type. (Expert - Dimitri Papadimitriou, if applicable)
Machine Names
Machine NamesRFC (?)
(?)
Mail Content Disposition Values and Parameters
Handling Parameter Values(?)
Mail Content Disposition Parameter ValuesRFC (?)
(?)
Mail Content Disposition ValuesRFC (?)
(?)
Mail Content Dispositon ParametersRFC (?)
(?)
Mail Parameters
Address Literal TagsRFC 2821
Standards Action
Diagnostic TypesRFC 1891
(?)
Mail Address Types(?)
Mail Encoding Header Field KeywordsRFC 1505
Specification Required
Mail Encryption Types(?)
Mail Service TypesRFC (?)
(?)
Mail System Names(?)
Mail Transmission TypesRFC 822 (?)
(?)
MTA Name TypesRFC 1891
(?)
SMTP Service ExtensionsRFC 1425
Standards Track RFC
Mangement Information Base (MIB)
For all IANA maintained MIBs, please look under "IANA Maintained MIBs"n/a
Other MIB related registries can be found at "Structure of Management Information (SMI) Numbers"n/a
Media Feature Tags
features.global-treeRFC 2506
Expert Review (Expert - Larry Masinter)
features.ietf-treeRFC 2506
IETF Consensus
features.sip-treeRFC 3840
IETF Consensus
features.uri-treeRFC 2506
Unregistered (formed from uri)
Media Gateway Control Protocol (MGCP)
List of Extension Digit Map LettersRFC 3435
Expert review (section C.1) (Expert-Brian Rosen)
LocalConnectionsOptions Sub-RegistryRFC 3435
Expert review (section C.3) (Expert-Brian Rosen)
MGCP Package Sub-RegistryRFC 3435
Expert review (section C.1) (Expert-Brian Rosen)
Megaco/H.248 Packages
Error CodesRFC 5125
Expert review or IETF consensus (Expert-Tom PT Taylor)
Private PackagesRFC 5125
Expert review or IETF consensus (Expert-Tom PT Taylor)
Profile NamesRFC 5125
Expert review or IETF consensus (Expert-Tom PT Taylor)
Public PackagesRFC 5125
Expert review or IETF consensus (Expert-Tom PT Taylor)
Service Change ReasonsRFC 5125
Expert review or IETF consensus (Expert-Tom PT Taylor)
Message Disposition Notification (MDN) Parameters
MDN-Disposition-Modifier-NamesRFC 3798
(?)
MDN-Dispositon-Notification-Option NamesRFC 3798
(?)
MDN-Extension-Field-NamesRFC 3798
(?)
Message Header Fields
Permanent Message Header FieldsRFC 3864
Expert Review (Graham Klyne)
Provisional Message Header FieldsRFC 3864
Expert Review (Graham Klyne)
Message Session Relay Protocol (MSRP) Parameters
Header FieldsRFC 4975
RFC Publication
MethodsRFC 4975
RFC Publication
Status CodesRFC 4975
RFC Publication
Message Tracking Query Protocol (MTQP)
OptionsRFC 3887
Options whose names do not begin with "vnd.": Standards track or IESG approved experimental RFC Options with "vnd.": First Come First Serve (?)
Milnet Parameters
Milnet ParametersRFC (?)
(?)
Mobile Internet Protocol (IP) Numbers
Code ValuesRFC 3220
Expert review (Phil Roberts)
Code Values for Mobile IP Handoff Reply MessagesRFC 4881
IETF Consensus
Dynamic HA Extension subtypesRFC 4433
IETF Consensus
FA Error Extension subtypes (value 45)RFC 4636
Expert Review (Expert - Phil Roberts)
Generalized Link Layer Address Registration Extension Subtypes and Generalized Link Layer Address Advertisement Extension SubtypesRFC 4881
IETF Consensus
Mobile Network Acknowledgement ExtensionInternet Draft draft-ietf-mip4-nemo-v4-base-11
Standards Action or IESG Approval
User Datagram Protocol (UDP) Tunnel Reply Extension: SubtypeRFC 3519
Expert review. Also specification required. (section 8) (Expert-Phil Roberts)
User Datagram Protocol (UDP) Tunnel Request Extension: SubtypeRFC 3519
Expert review. Also specification required. (section 8) (Expert-Phil Roberts)
Mobile IPv6
Access Technology Type Option type valuesInternet Draft draft-ietf-netlmm-proxymip6-18
Expert Review
Enumerating AlgorithmsRFC 4285
IETF Consensus
Handoff Indicator Option type valuesInternet Draft draft-ietf-netlmm-proxymip6-18
Expert Review
Mobile Node Identifier Option SubtypesRFC 4283
Standards Action
Mobility Header TypesRFC 3775
Standards Action or IESG Approval
Mobility OptionsRFC 3775
Standards Action or IESG Approval
Status CodesRFC 3775
Standards Action or IESG Approval
Subtype field of the MN-HA and MN-AAA authentication mobility optionsRFC 4285
IETF Consensus
Multicast Address (IPv4)
Address Assignments/AllocationsRFC 3171
Expert review, IESG approval, or standards action process (Expert-Marshall Eubanks) http://www.iana.org/cgi-bin/multicast.pl
Multicast Address Dynamic Client Allocation Protocol (MADCAP) Parameters
MADCAP Error CodesRFC 2730
IETF consensus (section 5)
MADCAP Feature CodesRFC 2730
IETF consensus (section 5)
MADCAP Lease Identifier TypesRFC 2730
IETF consensus
MADCAP Message TypesRFC 2730
IETF consensus
MADCAP OptionsRFC 2730
IETF consensus (section 5)
Multicast Address-Set Claim (MASC) Protocol Parameters
Message TypesRFC 2909
IETF consensus (section 15)
NOTIFICATION Message Error Codes and SubcodesRFC 2909
IETF consensus (section 15)
OPEN Message Optional Parameter TypesRFC 2909
IETF consensus (section 15)
UPDATE Message Attribute TypesRFC 2909
IETF consensus (section 15)
UPDATE Message Optional Parameter TypesRFC 2909
IETF consensus (section 15)
Multicast Source Discovery Protocol (MSDP)
TLV ValuesRFC 3618
8-200: IESG Approval or Standards Action Process (section 19.1) 201-255: Experimental use (section 19.2)
Multimedia Internet KEYing (MIKEY)
Key ID TypesRFC 4563
0-240 IETF Consensus, 241-255 Private Use
Payload Name SpacesRFC 3830
0-240: IETF Consensus 241-255: Private Use Unless stated otherwise in Registry
Multiprotocol Label Switching Architecture (MPLS)
IdentifiersRFC 3033
IETF consensus
Label Switched Paths (LSPs) Parameters - Message TypesRFC 4379
0-191 - Standards Action 192-251 - Specification Required (Experimental RFC needed) 252-255 - Vendor Private Use and MUST NOT be allocated
Label Switched Paths (LSPs) Parameters - Reply ModesRFC 4379
0-191 - Standards Action 192-251 - Specification Required (Experimental RFC needed) 252-255 - Vendor Private Use and MUST NOT be allocated
Label Switched Paths (LSPs) Parameters - Return CodesRFC 4379
0-191 - Standards Action 192-251 - Specification Required (Experimental RFC needed) 252-255 - Vendor Private Use and MUST NOT be allocated
Label Switched Paths (LSPs) Parameters - TLVsRFC 4379
0-16383 and 32768-49161 - Standards Action 16384-31743 and 49162-64511 - Specification Required (Experimental RFC needed) 31744-32767 and 64512-65535 - Vendor Private Use, and MUST NOT be allocated
MPLS Label ValuesRFC 3032
IETF consensus
Multipurpose Internet Mail Extensions (MIME)
Access-TypesRFC 4289
Multiple registration procedures. See section 2 of RFC4289
Event code registry for audio/telephone-eventRFC 4733
Specification Required and Expert Review (Expert - Tom Taylor)
Media Type Parameters(?)
Media Type Sub-ParametersRFC 3640
(?)
Media TypesRFC 4288, RFC 4855
Expert Review (Ned Freed)
Sub-parameter registry for application/mboxRFC 4155
Specification Required
Sub-Parameter registry for audio/rtp-midiRFC 4695
IETF Standards-Track Document or Specification Required (see individual sub-registries)
Sub-Parameter registry for mode=rtp-midi of audio/mpeg4-genericRFC 4695
IETF Standards-Track Document or Specification Required (see individual sub-registries)
Sub-parameter registry for video/rawRFC 4175
Specification Required (Values for the sampling and colorimetry parameters)
text/directory MIME ParametersRFC 2425
Two week comment period, Expert review (Paul Hoffman)
text/directory MIME ProfilesRFC 2425
Two week comment period, expert review (Paul Hoffman)
text/directory MIME TypesRFC 2425
Two week comment period, Expert review (Paul Hoffman)
Namespace for IP Over IEEE 1394
Multicast Channel Allocation Protocol (MCAP) ParametersRFC 2734
(?)
Values Registered for the Unit_SW_VersionRFC 2734
IANA allocation (section 10)
Network Configuration Protocol (NETCONF)
Capability URNsRFC 4741
IETF Standards Action
Network File System version 4 (NFSv4) Named Attributes
Named AttributesRFC 3530
Informational RFC (section 17.1)
Network News Transfer Protocol (NNTP)
Network News Transfer Protocol (NNTP) ParametersRFC 3977
Labels beginning with X are reserved for private use All others: Standards Track RFC or an IESG-approved experimental protocol
Next Hop Resolution Protocol (NHRP) Packet Types
Extension TypesRFC 2332
Expert or area director review with documentation (section 9) (Expert-Jim Luciani)
Packet TypesRFC 2332
Expert or area director review with documentation (section 9) (Expert-Jim Luciani)
Novell Service Advisor Protocol (SAP) Numbers
Novell Object TypesNot IETF
IANA does not assign
One Time Password Parameters
Algorithm IdentifierRFC 2289
(?)
Extension Set IDRFC 2289 (?)
(?)
Open Network Computing (ONC) Remote Procedure Call (RPC)
Network Identifier (r_netid)RFC 3530
Informational RFC (section17.2)
Protocol Family (r_nc_protofmly)RFC 1833
?
Protocol Name (r_nc_proto)RFC 1833
?
Transport Semantics (r_nc_semantics)RFC 1833
?
Open Shortest Path First (OSPF)
Authentication CodesRFC 1583 (?)
(?)
Bandwidth Constraints Model IdentifiersRFC 4124
0-239 Specification Required 240-255 Private Use
Link Local Signalling TLV Identifiers (LLS Types)RFC 4813
IETF Consensus
LLS Type 1 Extended OptionsRFC 4813
IETF Consensus
Opaque Link-State Advertisements (LSA) Option TypesInternet Draft draft-ietf-ospf-rfc2370bis-05
0-127: IETF Consensus. 128-255: Reserved for Private Use.
OSPF Multi-Topology RoutingRFC 4915
3-31: IETF consensus
Signature AlgorithmsRFC (?)
(?)
Traffic Engineering TLVsRFC 3630
3-32767: Standards Action (section 6) 332768-32777: Experimental use (section 6) 32778-65535: Standards Track RFC (section 6)
Open Shortest Path First v2 (OSPFv2)
OSPF Packet Type
0 Reserved, 1-127: Standards Action, 128-255 : Reserved
OSPF Router Information (RI) TLVsRFC 4970
0 Reserved, 1-32767: Standards Action, 32768-32777: Experimentation, 32778-65535: Reserved
OSPF Router Informational Capability BitsRFC 4970
Standards Action
OSPFv2 Grace LSA Top Level TLVRFC 4940
0 Reserved, 1-255: Standards Action, 256-65519: Reserved, 65520-65527: Experimentation, 65528-65535: Vendor Private Use
OSPFv2 Link State (LS) Type
0 Reserved, 1-127: Standards Action, 128-255: Reserved
OSPFv2 OptionsRFC 4940
Standards Action
OSPFv2 Router LSA Link TypeRFC 4940
0 Reserved, 5-127: Standards Action, 128-255: Reserved
OSPFv2 Router PropertiesRFC 4940
Standards Action
Open Shortest Path First v3 (OSPFv3)
OSPFv3 LSA Function CodesRFC 4970
0 Reserved, 1-255: Standards Action, 256-8175: Reserved, 8176-8183: Experimentation, 8184-8191: Vendor Private Use
OSPFv3 OptionsRFC 4940
Standards Action
OSPFv3 Prefix OptionsRFC 4940
Standards Action
OSPFv3 Router LSA Link TypeRFC 4940
0 Reserved, 1-127: Standards Action, 128-255: Reserved
OSPFv3 Router Properties RegistryInternet Draft draft-ietf-ospf-ospfv3-update-23
Standards Action
Open Systems Interconnection (OSI) Network Service Access Point Addresses (NSAPA) Internet Code Point
OSI NSAPA Internet Code PointInternet Draft draft-gray-1888bis-03
2-9999 IETF Consensus
Operating System Names
Operating System NamesRFC 952 (?)
(?)
Specific ParametersRFC 3659
First Come First Serve
OPES Callout Protocol Core
OCP FeaturesRFC 4037
Designated expert review for standards-track registration
Optimized Link State Routing Protocol (OLSR)
Optimized Link State Routing Protocol (OLSR)RFC 3626
5-127: Standards Action (section 22) 128-255: Reserved for Private/Local use. (section 22)
Per Hop Behavior Identification Codes
ID CodesRFC 3140
Expert or area director review (section 4) (Experts - Primary: Brian Carpenter; Secondary: David Black)
PKIX Parameters
PKIX SRV Protocol LabelsRFC 4386
Specification Required
Point to Point Protocol (PPP) Numbers
Bridging MAC TypesRFC (?)
Expert review (Expert - Jim Carlson)
Internet Packet Exchange (IPX) Compression Protocol ValuesRFC (?)
Expert review (Expert - Jim Carlson)
Internet Packet Exchange (IPX) Routing Protocol OptionsRFC (?)
Expert review (Expert - Jim Carlson)
Internet Protocol (IP) Header Compression Configuration Option Suboption TypesRFC (?)
(?)
Internetwork Packet Exchange Control Protocol (IPXCP) Configuration OptionsRFC (?)
Expert review (Expert - Jim Carlson)
IP Header Compression Configuration Option Suboption TypesRFC 3544
Standards Action Process (section 7)
IP-Compression-Protocol TypesRFC 1322
IETF Consensus
IP-Compression-Protocol Types(?)
IPv6-Compression-ProtocolRFC 5172
IETF Consensus
Link Control Protocol (LCP) Callback Operation FieldsRFC (?)
(?)
Multilink Endpoint Discriminator ClassRFC (?)
(?)
NetBIOS Frames Control Protocol (NBFCP) Configuration OptionsRFC (?)
Expert review (Expert - Jim Carlson)
PPP Apple Talk Control Protocol (ATCP) Configuration Option TypesRFC (?)
Expert review (Expert - Jim Carlson)
PPP Authentication AlgorithmsRFC (?)
Expert review (Expert - Jim Carlson)
PPP Banyan Vines Control Protocol (BVCP) Configuration Option TypesRFC (?)
Expert review (Expert - Jim Carlson)
PPP Bridging Configuration Option TypesRFC (?)
Expert Review (Expert - Jim Carlson)
PPP Bridging Spanning TreeRFC (?)
Expert review (Expert - Jim Carlson)
PPP Compression Control Protocol (CCP) Configuration Option TypesRFC (?)
Expert Review (Expert - Jim Carlson)
PPP Data Link Layer (DLL) Protocol Numbers(?)
Expert review (Expert - Jim Carlson)
PPP Encryption Control Protocol (ECP) Configuration Option TypesRFC (?)
Expert review (Expert - Jim Carlson)
PPP Extensible Authentication Protocol (EAP) Request/Response TypesRFC (?)
Expert review (Expert - Jim Carlson)
PPP Internet Protocol Control Protocol (IPCP) Configuration Option TypesRFC (?)
Expert review (Expert - Jim Carlson)
PPP IPv6CP Configuration OptionsRFC (?)
Expert review (Expert - Jim Carlson)
PPP Link Control Protocol (LCP) Configuration Option TypesRFC (?)
Expert review (Expert - Jim Carlson)
PPP Link Control Protocol (LCP) FCS AlternativesRFC (?)
Expert review (Expert - Jim Carlson)
PPP Link Control Protocol (LCP), Compression Control Protocol (CCP), and Internet Protocol Control (IPCP) CodesRFC (?)
Expert review (Expert - Jim Carlson)
PPP NumbersRFC (?)
(?)
PPP OSI Network Layer Control Protocol (OSINLCP) Configuration Option TypesRFC (?)
Expert review (Expert - Jim Carlson)
PPP Vendor Specific Organizationally Unique Identifiers (OUI) OptionsRFC (?)
Expert review (Expert - Jim Carlson)
Robust Header Compression (ROHC) Configuratin Option Suboption Identifier ValuesRFC 3241
See http://www.iana.org/assignments/rohc-sub-ids
Serial Data Control Protocol (SDCP) Configuration OptionsRFC (?)
Expert review (Expert - Jim Carlson)
Point-to-Point Over Ethernet (PPPoE)
PPPoE Active Discovery Code fieldsRFC 4937
First Come First Serve
PPPoE TAG ValuesRFC 4937
First Come First Serve
Port Numbers
SystemRFC 2780
Specification Required
UserRFC 2780
IANA review
Post Office Protocol version 3 (POP3) Extension Mechanism
POP3 CapabilitiesRFC 2449
Standards track or IESG approved experimental RFC (section 9)
POP3 Response CodesRFC 2449
RFC specification required (section 9)
Preemption Namespace Registry
Preemption NamespacesRFC 4411
Standards Track Document
Presence SRV Protocol
Label RegistryRFC 3861
Specification Required
Pretty Good Privacy (PGP)
Compression AlgorithmsRFC 4880
IETF Consensus
Hash AlgorithmsRFC 4880
IETF Consensus
Image Format Subpacket TypesRFC 4880
IETF Consensus
Implementation FeaturesRFC 4880
IETF Consensus
Key Flags ExtensionsRFC 4880
IETF Consensus
Key Server Preference ExtensionsRFC 4880
IETF Consensus
New Packet VersionsRFC 4880
IETF Consensus
PGP Packet Types/TagsRFC 4880
IETF Consensus
PGP String-to-Key (S2K)RFC 4880
IETF Consensus
PGP User Attribute TypesRFC 4880
IETF Consensus
Public Key AlgorithmsRFC 4880
IETF Consensus
Reasons for Revocation ExtensionsRFC 4880
IETF Consensus
Signature Notation Data Subpacket TypesRFC 4880
IESG Expert
Signature Subpacket TypesRFC 4880
IETF Consensus
Symetric Key AlgorithmsRFC 4880
IETF Consensus
Printer Language Numbers
Printer Language NumbersRFC 1759 (?)
Working group approval
Pronet 80 Type Numbers
Pronet 80 Type NumbersNot IETF
Not assigned by IANA
Protocol for Carrying Authentication for Network Access (PANA) Parameters
AVP CodesRFC 5191
Expert Review with Specification Required, or Standards Action
AVP FlagsRFC 5191
Standards Action
Message FlagsRFC 5191
Standards Action
Message TypesRFC 5191
5-65519 IETF Consensus; 65520-65535 IANA does not assign, please see RFC3692.
Protocol Independent Multicast (PIM)
Address Family NumbersRFC 3973
0-127 Same meaning as Address Family Numbers 128-250 IESG Approval 251-255 Private Use
Hello OptionsRFC 4601
FCFS (expire in 1 year) Permanenet assignments require a specification (specification required)
Protocol Names
Protocol NamesRFC 952
(?) (Also Service Names)
Protocol Numbers
Protocol NumbersRFC 5237
Standards Action or IESG Approval
Proxy Certificate Policy
LanguagesRFC 3820
IETF Standards Action
Pseudowire Name Spaces (PWE3)
Attachment Group Identifier (AGI) Type RegistryRFC 4446
2 through 64 - Expert Review (Experts - Stewart Bryant, Danny McPherson); 65 through 127, and 255 - IETF Consensus 128 through 254 - First Come First Serve (reserved for vendor proprietary extensions)
Attachment Individual Identifier Type RegistryRFC 4446
2 through 64 - Expert Review (Experts - Stewart Bryant, Danny McPherson); 65 through 127, and 255 - IETF Consensus 128 through 254 - First Come First Serve (reserved for vendor proprietary extensions)
MPLS Pseudowire Types RegistryRFC 4446
31 through 1024 - Expert Review (Experts - Stewart Bryant, Danny McPherson); 1025 through 4096, and 32767 - IETF Consensus 4097 through 32766 - First Come First Serve (reserved for vendor proprietary extensions)
Pseudowire Associated Channel Types RegistryRFC 4385
IETF Consensus
Pseudowire Interface Parameters Sub-TLV Type RegistryRFC 4446
13 through 64 - Expert Review (Experts - Stewart Bryant, Danny McPherson); 65 through 127, and 255 - IETF Consensus 128 through 254 - First Come First Serve (reserved for vendor proprietary extensions)
Pseudowire Status Codes RegistryRFC 4446
5 through 31 - Expert Review (Experts - Stewart Bryant, Danny McPherson)
Public Data Network Numbers
14.0.0.0-14.000.255.255RFC 1356
(?)
Publisher Identification Codes
Publisher ID CodesRFC 2780
IANA does not assign
Radius Types
Radius Attribute TypesRFC 3575
IETF Consensus
Radius Attribute ValuesRFC 3575
Standards Action
Radius Packet Type CodesRFC 3575
IESG Approval
Vendor ID'sRFC 2865
Obtain a Private Enterprise Number
Real Time Streaming Protocol (RTSP)/1.0 Parameters
RTSP/1.0 HeadersRFC 2326
Standards Document, preferable an IETF RFC
RTSP/1.0 MethodsRFC 2326
IETF standard track document
RTSP/1.0 Option TagsRFC 2326
Specification Required
RTSP/1.0 Status CodesRFC 2326
IETF standards track document
Real-Time Transport Protocol (RTP) Parameters
FMT Values for RTPFB and PSFB Payload TypesRFC 4585
2-30 Specification Required
Real-Time Transport Protocol (RTP) Payload Format media typesRFC 3551
Standards Action Process or expert approval (Expert-Steve Casner)
Real-Time Transport Protocol (RTP) Payload types (PT) for standard audio and video encodingsRFC 3551
Registry closed (section C)
Real-Time Transport Protocol (RTP) Profile NamesRFC 3550
Standards Action Process or expert approval (section D) (Expert-Steve Casner)
RTP RTCP Control Packet TypesRFC 3550
(?)
RTP SDES Item TypesRFC 3550
(?)
Realm Specific Internet Protocol (RSIP) Parameters
Address TypesRFC 3103
Specification required (section 12)
Flow PolicyRFC 3103
Specification required (section 12)
RSIP Error CodesRFC 3103
Specification required (section 12)
RSIP Message Type CodesRFC 3103
Specification required (section 12)
RSIP MethodsRFC 3103
Specification required (section 12)
RSIP ParametersRFC 3103
Specification required (section 12)
Tunnel TypesRFC 3103
Specification required (section 12)
Vendor IDRFC 3103
Specification required (section 12)
Registrar Identification Codes
Registrar ID CodesNot defined by an RFC
ICANN Accredited Registrars
Reliable Mutlicast Transport (RMT) FEC Encoding IDs and FEC Instance IDs
Encoding IDsRFC 5052
IETF Consensus
Instance IDsRFC 5052
FCFS
Resource ReSerVation Protocol (RSVP) Parameters
Class Names, Class Numbers, and Class TypesRFC 3936
Class-Num = 0bbbbbbb 0-119 Standards Action 120-123 Expert Review 124-127 Vendor Private Use Class-Num = 10bbbbbb 128-183 Standards Action 184-187 Expert Review 188-191 Vendor Private Use Class-Num = 11bbbbbb 192-247 Standards Action 248-251 Expert Review 252-255 Vendor Private Use For Class Numbers that pre-date RFC3936, new Class Types are assigned via Standards Action. (Experts - Primary: Francois Le Faucheur, Secondary: Dimitri Papadimitriou)
Error Codes and ValuesRFC 3936
0-239 Standards Action 240-251 Expert Review 252-255 Vendor Private Use (Experts - Primary: Francois Le Faucheur, Secondary: Dimitri Papadimitriou)
Message TypesRFC 3936
0-239 Standards Action 240-255 Expert Review (Experts - Primary: Francois Le Faucheur, Secondary: Dimitri Papadimitriou)
MiscellaneousRFC (?)
(?)
Virtual Destination PortsRFC 2207
0 Illegal Value 1-10 Reserved (Contact Authors) 11-8191 Assigned by IANA 8192-65535 Dynamic
RObust Header Compression (ROHC)
Profile IdentifiersRFC 3095
0-127: Standards Track RFC 128-254: Other specs that meet this requirement such as an Informational RFC
Suboption Identifier ValuesRFC 3241
Specification Required 0-127: IETF standards-track 128-254: Available for others
Route Distinguisher Types
Type ValuesRFC 4364
High-order bit of 0 - First Come First Serve High-order bit of 1 - IETF Consensus
Routing Information Protocol (RIP) Types
Message TypesRFC 1723
(?)
RSVP TE Parameters
Attributes FlagsRFC 4420
IETF Consensus
Attributes TLV SpaceRFC 4420
IETF Consensus
Session Attribute Object FlagsRFC 4859
IETF Consensus
RTP Control Protocol Extended Reports (RTCP XR)
Block TypesRFC 3611
Specification Required
SDP ParametersRFC 3611
Specification Required
S-NAPTR Parameters
Application Protocol TagsRFC 3958
Specification Required in form of a RFC
Application Service TagsRFC 3958
Specification Required in form of a RFC
Secure Shell (SSH) Protocol Parameters
Authentication Method NamesRFC 4250
IETF Consensus
Channel Connection Failure Reason Codes and DescriptionsRFC 4250
0x00000005 through 0xFDFFFFFF - IETF CONSENSUS
Compression Algorithm NamesRFC 4250
IETF Consensus
Connection Protocol Assigned Names - Channel Request NamesRFC 4250
IETF Consensus
Connection Protocol Assigned Names - Channel TypesRFC 4250
IETF Consensus
Connection Protocol Assigned Names - Global Request NamesRFC 4250
IETF Consensus
Connection Protocol Assigned Names - Subsystem NamesRFC 4250
IETF Consensus
Disconnection Messages Reason Codes and DescriptionsRFC 4250
0x00000010 through 0xFDFFFFFF - IETF CONSENSUS
Encryption Algorithm NamesRFC 4250
IETF Consensus
Extended Channel Data Transfer data_type_code and DataRFC 4250
IETF Consensus
Key Exchange Method NamesRFC 4250
IETF Consensus
MAC Algorithm NamesRFC 4250
IETF Consensus
Message NumbersRFC 4250
STANDARDS ACTION
Pseudo-Terminal Encoded Terminal ModesRFC 4250
IETF Consensus
Public Key Algorithm NamesRFC 4250
IETF Consensus
Publickey Subsystem AttributesRFC 4819
IETF consensus
Publickey Subsystem Request NamesRFC 4819
IETF consensus
Publickey Subsystem Response NamesRFC 4819
IETF consensus
Publickey Subsystem Status CodesRFC 4819
Standards Action
Service NamesRFC 4250
IETF Consensus
Signal NamesRFC 4250
IETF Consensus
SSH Public-Key File Header TagsRFC 4716
IETF Consensus
Security Parameters Index
SPI Values (other ranges?)RFC 1826
RFC required (section 3.2)
Server Cache Synchronization Protocol (SCSP) Parameters
Protocol ID'sRFC 2334
RFC, product of standards body, or expert review
Service Location Protocol Version 2 (SLPv2) Registrations
Cryptographic BSD CodesRFC 2608
IETF Consensus
Error NumbersRFC 2608
IETF Standards Action
SLPv2 Function ID'sRFC 2608
12-255: IETF consensus
Service Names
Service Names(?)
Session Description Protocol (SDP) Parameters
ack and nack Attribute ValuesRFC 4585
First Come First Served with a permanent, stable, and publically accessible document
Codec Control MessagesRFC 5104
Specification Required
rtcp-fb Attribute ValuesRFC 4585
First Come First Served with permanent, stable, and publically accessible document.
SDP Parameters addrtypeRFC 4566
RFC
SDP Parameters att-field (both session and media level)RFC 4566
Specification Required
SDP Parameters att-field (media level only)RFC 4566
Specification Required
SDP Parameters att-field (session level)RFC 4566
Specification Required
SDP Parameters att-field (unknown level)RFC 4566
Specification Required
SDP Parameters bwtypeRFC 4566
Standards-Track RFC
SDP Parameters contentRFC 4796
Specification Required
SDP Parameters enckeyRFC 4566
REGISTRY OBSOLETED - No further registrations accepted
SDP Parameters nettypeRFC 4566
RFC
SDP Parameters protoRFC 4566
RFC (Standards-Track preferred)
SDP/RTSP key management protocol identifiersRFC 4567
Specification Required
Semantics for the "group" SDP AttributeRFC 3388
Standards track document
Session Initiation Protocol (SIP) Event Types Namespace
Event PackagesRFC 3427
Informational RFC approved by the IESG
Event Template PackagesRFC 3427
Standards Track RFC
Session Initiation Protocol (SIP) Parameters
Header FieldsRFC 3261, RFC 3427
RFC publication (section 27.3)
Methods and Response CodesRFC 3261, RFC 3427
RFC publication (section 27.4)
Security Mechanism NamesRFC 3329
IETF consensus (section 6)
SIP Table of Mappings From Service Field Values to Transport ProtocolsRFC 3263
Publication of standards track RFC (section 9)
Warning CodesRFC 3261, RFC 3427
RFC publication (section 27.4)
Session Initiation Protocol (SIP) Parameters
Header Field Parameters and Parameter ValuesRFC 3968
IETF Consensus (in the form of a RFC - No requirement that it be standards-track)
Identity-Info Algorithm Parameter ValuesRFC 4474
Standards Track RFC
Identity-Info ParametersRFC 4474
Standards Track RFC
Option TagsRFC 3261, RFC 3427
Publication of standards track (section 27.1)
Precondition Types used with SIPRFC 3312
Publication of standards track RFC (section 15)
Reason ProtocolsRFC 3326
Reason protocols MUST refer to either an ITU-T recommendation number, an IETF protocol name, or the recognized protocol identifier from another standardization organization (section 4)
Registry for the SIP SRV Resource Record Services FieldRFC 3263
Standards Track RFC
SIP/SIPS URI ParametersRFC 3969
Specification Required
Session Initiation Protocol (SIP) Privacy Header Values
Header ValuesRFC 3323
RFC's approved by the SIP working group (section 7)
Sieve Extensions
ExtensionsRFC 5228
Standards track or IESG approved experimental RFC
Notification MechanismsInternet Draft draft-ietf-sieve-notify-12
Vendor-controlled: First Come First Served. IETF-controlled: Specification Required.
Notification-Capability ParametersInternet Draft draft-ietf-sieve-notify-12
Vendor-controlled: First Come First Served. IETF-controlled: Specification Required.
Sieve Environment ItemsRFC 5183
First Come, First Served if item name begins with "vnd." All others require standards track or experimental RFC.
SIG
SIG (0) Algorithm NumbersInternet Draft draft-ietf-dnsext-dnssec-2535typecode-chan
(tbd)
Signaling Compression (SigComp)
NamespaceRFC 3320
Standards Track RFC approved by the IESG
Signaling User Adaptation Layer Assignments
Message ClassesRFC 3331, RFC 4666
IETF consensus action (section 8.2)
Message ParametersRFC 3331, RFC 4666
IETF consensus action (section 8.2)
Message TypesRFC 3331, RFC 4666
IETF consensus action (section 8.2)
Simple Authentication and Security Layer (SASL) Mechanisms
SASL MechanismsRFC 4422
First Come First Serve for Mechanisms Expert Review with Mailing List for Family Name Registrations (Expert - Simon Josefsson)
Simple Gateway Monitoring Protocol (SGMP) Vendor Specific Codes
SGMP Vendor Specific Codes (Obsolete)RFC 1028 (?)
No further registrations
Simple Mail Transfer Protocol (SMTP) Enhanced Status Codes
Class Sub-CodesInternet Draft draft-hansen-4468upd-mailesc-registry-05.t
Specification Required
Enumerated Status CodesInternet Draft draft-hansen-4468upd-mailesc-registry-05.t
Specification Required
Status Sub-CodesInternet Draft draft-hansen-4468upd-mailesc-registry-05.t
Specification Required
Simple Mail Transfer Protocol (SMTP) Service Extensions
KeywordsRFC 1869
Standards track RFC or a document defining an IESG approved experimental protocol
Simple Network Management Protocol (SNMP) Number Spaces
Message Processing ModelsRFC 3411
Standards track document (section 6.2)
Security ModelsRFC 3411
Standards track document (section 6.1)
snmpAuthProtocolsRFC 3411
Standards Track document
SnmpEngineID FormatsRFC 3411
Standards track document (section 6.3)
snmpPrivProtocolsRFC 3411
Standards Track document
Snoop
Datalink TypesRFC 3827
FCFS (26 and above) (10-15 and 19-25 Reserved)
SOCKS Methods
SOCKS Method ValuesRFC 1928
Not Defined
Special Peoples Number Registry (SPNR)
Special Peoples Number Registry (SPNR)n/a
Not an IETF Registry. Contact IANA.
Stream Control Transmission Protocol (SCTP) Parameters
Adaptation Code PointsRFC 5061
IETF Consensus
Cause CodesRFC 2960
Specification required action (section 13.3)
Chunk Parameter TypesRFC 2960
IETF consensus action (section 13.2)
Chunk TypesRFC 2960
IETF consensus action (section 13.1)
HMAC IDENTIFIERSRFC 4895
IETF Consensus
SCTP Payload Protocol IdentifiersRFC 2960
FCFS (section 13.4)
Stringprep Profiles
Profile NamesRFC 3454
IETF consensus (section 10)
Structure of Management Information (SMI) Numbers
Experimental Numbers(?)
ifType definitions(?)
Message Processing ModelsRFC 3411
Please look under Simple Network Management Protocol (SNMP) Number Spaces
mib-2 NumbersRFC 1213, RFC 2578
RFC Required
Misc Parameters(?)
mplsStdMIB (SIC)RFC 4802
Standard Action section 11.2.1
Security ModelsRFC 3411
Please look under Simple Network Management Protocol (SNMP) Number Spaces
SMI Security for Mechanism msec Codes(?)
IETF Consensus
SMI Security for Mechanism msec content-typesRFC 4534
IETF Consensus
SMI Security for Mechanism msec data-policiesRFC 4534
IETF Consensus
SMI Security for Mechanism msec distributed-operations-methodsRFC 4534
IETF Consensus
SMI Security for Mechanism msec module-identifersRFC 4534
IETF Consensus
SMI Security for Mechanism msec protocol-identifiersRFC 4534
IETF Consensus
SMI Security for Mechanism msec rekey-methodsRFC 4534
IETF Consensus
SMI Security for Mechanism msec rekey-reliability-methodsRFC 4534
IETF Consensus
SMI Security for Mechanism msec security-suitesRFC 4534
IETF Consensus
spdActionsRFC 4807
Specification Required and Expert Review (Expert - Wes Hardaker)
Transmission NumbersRFC 1213
Specification Required
Structured Data Exchange Format (SDXF) Parameters
Compression Methods for SDXFRFC 3072
RFC or equivalent (section 12.3)
Encryption Methods for SDXFRFC 3072
RFC or equivalent (section 12.3)
Subsequent Address Family Identifier (SAFI) Parameters
SAFI ValuesRFC 4760
4 - 63: Standards Action or Early Allocation policy; 64 - 127: First Come First Served; 128 - 240: Some recognized assignments (see registry), others Reserved; 241 - 254: Private Use (not to be assigned)
SUN Remote Procedure Call (RPC) Numbers
SUN RPC NumbersRFC 1057 (?)
IANA does not assign. Republication of values only.
SVRLOC Extensions
Service ExtensionsRFC 2608
Expert review (Expert-Erik Guttman)
SVRLOC Templates
Service TemplatesRFC 2609
Expert review (section 5) (Expert-Erik Guttman)
Syslog Parameters
Syslog Message SeveritiesRFC 3164
FCFS (?)
Sysolg Message FacilitiesRFC 3164
FCFS (?)
Telephony Routing over IP (TRIP) Parameters
TRIP Address FamiliesRFC 3219
Expert review (section 13.3) (Expert - Jonathan Rosenberg)
TRIP Application ProtocolsRFC 3219
Expert review (section 13.4) (Expert - Jonathan Rosenberg)
TRIP AttributesRFC 3219
Specification Required (section 13.2)
TRIP CapabilitiesRFC 3219
Specification Required (section 13.1)
TRIP IP Telephony Administrative Domain (ITAD) NumbersRFC 3219
FCFS (section 13.5)
Telnet Options
OptionsRFC 855
IETF Consensus
Sub-optionsRFC 855
IETF Consensus
Terminal Type Names
Terminal Type NamesRFC 930 (?) or RFC 1091 (?)
(?)
Timed Efficient Stream Loss-tolerant Authentication (TESLA) Parameters
TESLA-MAC ValuesRFC 4442
Expert Review by the MSEC working group or its designated successor
TESLA-PRF ValuesRFC 4442
Expert Review by the MSEC working group or its designated successor
Transfer Encodings
Transfer Encoding NamesRFC 4289
Standards track RFC (section 3.3)
Transmission Control Protocol (TCP) Header Flags
Header FlagsRFC 2780, RFC 3168
Standards action process
Transmission Control Protocol (TCP) Parameters
TCP Alternate Checksum NumbersRFC (?)
(?)
TCP Option NumbersRFC 2780
IESG Approval or Standards Action
Transport Layer Security (TLS)
Alert RegistryInternet Draft draft-ietf-tls-rfc4346-bis-10
Standards Action
Certificate TypesRFC 5081
IETF Consensus
Cipher Suite RegistryInternet Draft draft-ietf-tls-rfc4346-bis-10
First byte in range 0-191 (decimal) Standards Action, First byte in range 192-254 (decimal) Specification Required, First byte in range 255 (decimal) Private Use
ClientCertificateType Identifiers RegistryInternet Draft draft-ietf-tls-rfc4346-bis-10
0-63 Standards Action 64-223 Specification Required 224-255 Private Use
Compression Method IdentifiersRFC 3749
0-63: Standards Action 64-223: Specification Required 224-255: Private Use
ContentType RegistryInternet Draft draft-ietf-tls-rfc4346-bis-10
Standards Action
EC Curve Type RegistryInternet Draft draft-ietf-tls-ecc-12
IETF Consensus
EC Named Curve RegistryInternet Draft draft-ietf-tls-ecc-12
IETF Consensus
EC Point Format RegistryInternet Draft draft-ietf-tls-ecc-12
IETF Consensus
ExtensionType ValuesInternet Draft draft-ietf-tls-rfc4346-bis-10
IETF Consensus
HandshakeType RegistryInternet Draft draft-ietf-tls-rfc4346-bis-10
Standards Action
HashAlgorithm RegistryInternet Draft draft-ietf-tls-rfc4346-bis-10
0-63 Standards Action, 64-223 Specification Required, 224-255 Reserved for Private Use
SignatureAlgorithm RegistryInternet Draft draft-ietf-tls-rfc4346-bis-10
0-63 Standards Action, 64-223 Specification Required, 224-255 Reserved for Private Use
TLS Supplemental Data Formats (SupplementalDataType)Internet Draft draft-santesson-tls-supp-02
0-16385 Standards Action, 16386-65279 IETF Consensus, 65280-65535 Private Use
TLS UserMappingType ValuesInternet Draft draft-santesson-tls-ume-07
0-63 Standards Action, 64-223 Specification Required, 224-255 Private Use
TSIG Algorithm Names
Algorithm NamesRFC 2845
IETF consensus policy (section 7)
Undirectional Lightweight Encapsulation (ULE)
Next-Header RegistryRFC 4326
0-255: Expert review or RFC Required (Expert - Gorry Fairhurst) 256-511: Expert review or RFC Required (Expert - Gorry Fairhurst)
Uniform Resource Identifier (URI) Schemes
URI SchemesRFC 4395
Expert Review (Graham Klyne)
Uniform Resource Names (URN)
Formal NamespacesRFC 3406
IETF consensus action
Informal Namespace TemplatesRFC 3406
Informal NamespacesRFC 3406
Two week review period on urn-nid discussion list (expert-Leslie Daigle), then FCFS
Service URN LabelsRFC 5031
Standards Action
VCDIFF Secondary Compressor ID Values
VCDIFF Secondary Compressor ID ValuesRFC 3284
RFC or peer-reviewed permanent and readily available reference. Subject to the above, name assignments are FCFS. (section 15)
Version Numbers
Version NumbersRFC 2780 (section 3) (?)
IETF standards action
Version Symbols Used Within the Integrated Services User Port (ISUP) and QSIG
Application/ISUP SymbolsRFC 3204
Expert review (section 6) (experts - Primary: Jon Peterson, Secondary: Mark Watson)
Application/QSIG SymbolsRFC 3204
Expert review (section 6) (experts - Primary: Jon Peterson, Secondary: Mark Watson)
WAVE and AVI Codec Registries
WAVE and AVI Codes Registries (Historic Registry)RFC 2361
IANA does not assign. Republication of values. (section 3)
X.25 Type Numbers
X.25 Type NumbersNot defined by an RFC
IANA does not assign. Republication of values only.
Xerox Network System (XNS) Protocol Types
Assigned Internet Packet TypesNot defined by an RFC
IANA does not assign. Republication of values only.
Assigned Well-Known Socket NumbersNot defined by an RFC
IANA does not assign. Republication of values only.
XML - Extensible Markup Language
IETF XML RegistryRFC 3688
First Come First Serve, with Specification Required
XML-XCAP Application Unique IDsRFC 4825
Standards Track RFC