This page provides information about the procedures for assignments and
registrations in IANA registries.
The following is a matrix of information regarding IANA registries.
A |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Ad Hoc On Demand Distance Vector (AODV) |
AODV Message Types |
RFC3561 |
Standards action.
(section 12) |
Extension Type |
RFC3561 |
Standards action.
(section 12) |
Address Family Numbers |
Address Family Numbers |
RFC2453, RFC2858 |
(?) |
Address Resolution Protocol (ARP) Parameters |
Hardware Types |
RFC826 |
(?) |
Inverse Address Resolution Protocol Operation Codes |
RFC826 |
(?) |
Protocol Type |
RFC826 |
See the following registry:
http://www.iana.org/assignments/ethernet-numbers |
Applicable Exchange Core (APEX) Parameters |
APEX Endpoint Applications |
RFC3340 |
Expert review (Appendix B) |
APEX Options |
RFC3340 |
Expert review (Appendix B) |
APEX Services |
RFC3340 |
Expert review (Appendix B) |
Application Access Protocol (ACAP) Parameters |
ACAP Capabilities |
RFC2244 |
Recommended working group review (section 7.1) |
ACAP Response Codes |
RFC2244 |
Recommended working group review (section 7.2) |
Dataset Classes |
RFC2244 |
RFC (standards track or experimental) (section 7.3) |
Vendor Subtree |
RFC2244 |
FCFS (section 7.4) |
Authentication and Key Agreement (AKA) |
Version Namespace |
RFC3310 |
Expert Review (Experts: Vesa Torvinen-Primary, Jari Arkko-Secondary) |
Authentication Option Name Spaces |
Algorithm Name Space Values |
RFC3118 |
IETF consensus (section 6) |
Protocol Name Space Values |
RFC3118 |
IETF consensus (section 6) |
RDM Name Space Values |
RFC3118 |
IETF consensus (section 6) |
Authentication, Authorization, and Accounting (AAA) Parameters |
Application IDs |
RFC3588 |
4-167772150 Unallocated (Standards Track)
167772151-4294967294 Unallocated (Vendor Specific, FCFS)
(section 11.3) |
AVP Codes |
RFC3588 |
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 Value |
RFC3588 |
Standards Action Process
(section 11.1.2) |
AVP Specific Values |
RFC3588 |
IETF consensus
(section 11.4) |
Command Codes |
RFC3588 |
314-16,777,213 Unallocated (IETF Consensus)
(section 11.2.1) |
Command Flags |
RFC3588 |
4-7 Unallocated (Standards Action)
(section 11.2.2) |
Automatic Responses to Electronic Mail Parameters |
Auto-Submitted header field keywords |
RFC3834 |
IETF Consensus |
Auto-Submitted header field optional parameters |
RFC3834 |
IETF Consensus |
Autonomous System (AS) Numbers |
AS Numbers (Blocks of 1024 Numbers) |
RFC1930 |
RIR request to the IANA |
B |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Binary Floor Control Protocol (BFCP) Parameters |
Attribute Subregistry |
RFC-ietf-xcon-bfcp-06.txt |
Standards-Track RFC |
Error Code Subregistry |
RFC-ietf-xcon-bfcp-06.txt |
Standards-Track RFC |
Primitive Subregistry |
RFC-ietf-xcon-bfcp-06.txt |
Standards-Track RFC |
Request Status Subregistry |
RFC-ietf-xcon-bfcp-06.txt |
Standards-Track RFC |
Blocks Extensible Exchange Protocol (BEEP) Parameters |
BEEP Features |
RFC3083 |
Expert review (Appendix B) (Expert-Marshall T. Rose) |
BEEP Profiles |
RFC3080 |
Expert review (Appendix B) (Expert-Marshall T. Rose) |
Bootstrap Protocol (BOOTP) and Dynamic Host Configuration Protocol |
Authentication Suboption (value 8) number-spaces - Algorithm identifier values |
RFC4030 |
IETF Consensus |
Authentication Suboption (value 8) number-spaces - RDM Algorithm identifier values |
RFC4030 |
IETF Consensus |
BOOTP and DHCP Extensions |
RFC2489 |
RFC |
CableLabs Client Configuration Option Ticket Control Mask Bit Definitions |
RFC3594 |
IETF Consensus
(section 5) |
DHCP Agent Sub-Option Codes |
RFC3046 |
IETF Consensus |
DHCP Cablelabs Client Configuration Option Type 122 Sub-Option Codes |
RFC3495 |
IETF Consensus |
DHCP Message Type 53 Values |
RFC2132 |
? |
Extensions and Options |
RFC2489 |
RFC (section 7) |
GeoConf Option fields - The Altitude (AT) Field |
RFC3825 |
Standards Action |
GeoConf Option fields - The Datum field |
RFC3825 |
Standards Action |
Network/IP Option Type 63 Sub-Option Codes |
RFC2242 |
? |
Border Gateway Protocol (BGP) Parameters |
BGP Cease NOTIFICATION message subcodes |
RFC4486 |
Standards Action or Early IANA Allocation process
|
BGP Data Collection Standard Communities |
RFC4384 |
IETF Consensus [usually through the Global Routing Operations Working Group (grow)] |
BGP Error Codes |
RFC4271 |
Standards Action or Early IANA Allocation process |
BGP Error Subcodes |
RFC4271 |
Standards Action or Early IANA Allocation process |
BGP Extended Communities Types |
RFC4360 |
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 Types |
RFC4271 |
Standards Action or Early IANA Allocation process |
BGP Path Attributes |
RFC4271 |
Standards Action or Early IANA Allocation process |
Capability Codes |
RFC3392 |
Values 1-63: IETF consensus
Values 64-127: FCFS |
IPv4 Address Specific Extended Community |
RFC4360 |
First Come First Serve |
Opaque Extended Community |
RFC4360 |
First Come First Serve |
Two-octet AS Specific Extended Community |
RFC4360 |
First Come First Serve |
Well-known Communities |
RFC1997 |
(?) |
Building Blocks |
Building Blocks |
RFC3048 |
RFC (specification required) (section 6) |
C |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Caller-ID Numbering Plans |
Tokens |
RFC3939 |
Standards-track RFC |
Candidate Access Router Discovery (CARD) Parameters |
SEAMOBY AVP Type Registry |
RFC4065 |
Expert Review |
SEAMOBY Experimental Mobility Protocol Subtype Registry |
RFC4065 |
Specification Required and IESG Review |
SEAMOBY Layer 2 Access Technology Identifier Registry |
RFC4065 |
Specification Required |
CERT RR Certificate Types |
Certificate Types |
RFC4398 |
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 Sets |
RFC2978 |
Expert Review (Primary Expert Ned Freed and Secondary Expert Martin Duerst) |
Mailing List Information |
RFC2978 |
N/A |
Registration Templates |
RFC2978 |
Expert Review (Primary Expert Ned Freed and Secondary Expert Martin Duerst) |
Common Name Resolution Protocol (CNRP) Parameters |
Properties, Property Types, and Status Messages |
RFC3367 |
FCFS (section 10) |
Common Open Policy Service (COPS) Protocol Parameters |
A-Types and Sub-Types |
RFC3182 |
0-127: IETF consensus
128-255: Private use
(section 8) |
Auth_Session X-Types and Sub-Types |
RFC3520 |
0-127: IETF consensus
128-255: Private use
(section 8) |
C-Num and C-Type Values |
RFC2748 |
IETF consensus
(section 6) |
Client Types Values |
RFC2748 |
0x001-0x3FF: COPS extension document
0x4000-0x7FFF: Private Use
0x8000-0xFFFF: FCFS
(section 6) |
Error sub-codes defined for messages containing Client-type = 0 |
RFC4261 |
IETF Consensus |
Error Values |
RFC3182 |
0-32767: IETF consensus
32768-65535: Private use
(section 8) |
M-Types, Reason Sub-Codes, and Error Sub-Codes |
RFC2748 |
Same IANA considerations as respective client type
(section 6) |
P-Type |
RFC3181 |
IETF Consensus
(section 7) |
R-Types, Reason-Codes, Report-Types, Decision Object Command-Codes/Flags, and Error Codes |
RFC2748 |
IETF consensus
(section 6) |
S-Num, S-Types, and Error-Codes |
RFC3084 |
IETF consensus
(section 9) |
X-Types and Sub Types |
(?) |
(?) |
Common Presence and Instant Messaging (CPIM) |
CPIM Headers |
RFC3862 |
Standards Track RFC |
Context Labels for Internet Messages |
Internet Messages Content Types |
RFC3458 |
RFC (specification required)
(section 8) |
Context Transfer Protocol (CXTP) Parameters |
SEAMOBY Context Transfer Profile Type Registry |
RFC4065 |
Expert Review |
SEAMOBY Context Transfer Protocol Authorization Token Calculation Algorithms |
RFC4065 |
Specification Required |
Cryptographic Suites for IKEv1, IKEv2, and IPsec |
Identifiers |
RFC4308 |
RFC and expert review |
Cryptographically Generated Addresses (CGA) Name Space |
CGA Type Tags |
RFC3972 |
First Come First Serve (FCFS) |
D |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Datagram Congestion Control Protocol (DCCP) Parameters |
Ack Vector States |
RFC4340 |
Standards Track RFC |
Congestion Control Identifiers |
RFC4340 |
IETF Consensus (IETF RFC publication) |
Drop Codes |
RFC4340 |
Standards Track RFC |
Feature Numbers |
RFC4340 |
IETF Consensus (IETF RFC publication) |
Option Types |
RFC4340 |
IETF Consensus (IETF RFC publication) |
Packet Types |
RFC4340 |
Standards Track RFC |
Port Numbers |
RFC4340 |
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 Numbers |
RFC4341 |
Standards Track RFC |
Profile for DCCP Congestion Control ID 2: TCP-like Congestion Control Parameters - Option Types |
RFC4341 |
Standards Track RFC |
Profile for DCCP Congestion Control ID 2: TCP-like Congestion Control Parameters - Reset Codes |
RFC4341 |
Standards Track RFC |
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Feature Numbers |
RFC4342 |
Standards Track RFC |
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Option Types |
RFC4342 |
Standards Track RFC |
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Reset Codes |
RFC4342 |
Standards Track RFC |
Reset Codes |
RFC4340 |
IETF Consensus (IETF RFC publication) |
Service Codes |
RFC4340 |
Specification Required or First Come First Serve |
Delegation Signer Resource Record |
Digest Algorithms |
RFC3658 |
Standards Action |
Delivery Status Notification (DSN) Types |
address-types, diagnostic-types, MTA-name-types |
RFC3464 |
(?) |
Diameter |
AAA Parameters |
RFC3588 |
See AAA-Parameters |
Differentiated Services Field Codepoints |
Pools |
RFC2474 |
Pool 1: Standards action
Pool 2: Expiramental or local use/standardized assignments if Pool 1 exhausted
(section 6) |
Directory System Names |
Directory System Names |
RFC-ietf-ldapbis-bcp64-07.txt |
Registry Closed |
DNS Header Flags and EDNS Header Flags |
DNS Header Flags |
RFC2535 |
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 Flags |
RFC2671 |
Extended Label Type or Version Number: IESG approval
Option Code: RFC
(section 7) |
Domain Name System (DNS) |
KEY Flags |
RFC3755 |
Standards Action |
SSHFP Resource Record Parameters |
RFC-ietf-secsh-dns-05.txt |
IETF Consensus |
Domain Name System (DNS) Key Resource Record Protocol Octet |
DNS Key Resource Record Protocol Octet Values |
RFC2535 |
Registry now closed by RFC 3445. |
Domain Name System (DNS) Parameters |
DHCID RR type codes |
RFC4701 |
Standards Action |
Domain System Class |
RFC2929 |
(?) |
Domain System Operation Code |
RFC1035 and RFC2929 |
IETF Standards Action. |
Domain System Response Code |
RFC (?) |
(?) |
Resource Record (RR) Types and Q-Types |
RFC1035 and RFC2929 |
(?) |
Domain Name System (DNS) Security Algorithm Numbers |
DNS Security Algorithm Numbers |
RFC2535 |
5-251: IETF standards action
253-254: Private use
(section 11) |
Dynamic Host Configuration Protocol (DHCP) |
Extensions |
RFC2489 |
See: BOOTP and DHCP |
Parameters |
RFC2939 |
See: BOOTP and DHCP |
Dynamic Host Configuration Protocol for IPv6 (DHCPv6) |
DUIDs |
RFC3315 |
Standards Action Process
(section 24.5) |
Dynamic Host Configuration Protocol (DHCP) Message Types |
RFC3315 |
Standards Action Process
(section 24.2) |
Dynamic Host Configuration Protocol (DHCP) Options |
RFC3315 |
Standards Action Process
(section 24.3) |
Status Codes |
RFC3315 |
Standards Action Process
(section 24.4) |
E |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Electronic Commerce Language (ECML) |
Parameter Values |
RFC4112 |
IESG Approval |
Electronic Commerce Language Version 2 (ECMLv2) |
Ecom_Payment_Card_Protocol Registry |
RFC4112 |
Expert Review |
Ecom_Payment_Card_Type Registry |
RFC4112 |
Expert Approval |
Ecom_Transaction_Type Registry |
RFC4112 |
Expert Review |
Enterprise Numbers |
Enterprise Numbers |
RFC2578 |
First Come First Serve.
(use online template)
http://www.iana.org/cgi-bin/enterprise.pl |
ENUM - Telephone Number Mapping |
Enumservice Registrations |
(?) |
RFC (?) |
Ethernet Numbers |
Ethernet Numbers |
RFC (?) |
(?) |
Extensible Provisioning Protocol (EPP) |
EPP Repository IDs |
RFC3730 |
FCFS |
Extensible Authentication Protocol (EAP) |
EAP EXT_Type Parameters |
RFC-bersani-eap-psk-11.txt |
Designated Expert with Specification Required
|
EAP-AKA and EAP-SIM Parameters |
RFC4187 |
Specification Required |
EAP-PAX |
RFC-clancy-eap-pax-11.txt |
Expert Review |
EAP-SAKE messages |
RFC-vanderveen-eap-sake-02.txt |
IETF Consensus with Specification Required |
EAP-SAKE non-skippable attributes |
RFC-vanderveen-eap-sake-02.txt |
IETF Consensus with Specification Required |
EAP-SAKE skippable attributes |
RFC-vanderveen-eap-sake-02.txt |
IETF Consensus with Specification Required |
Method Types |
RFC3748 |
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 Codes |
RFC3748 |
Standards Action |
F |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Fibre Channel (FC) |
Port Types |
RFC4044 |
Standard Range: 1-9999
Expert Review and Specification Required
Private Use: 10000-99999 |
Foobar AF Numbers |
Foorbar AF Numbers |
RFC1639 |
IANA assignment (section 2) |
G |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Generalized Multi-Protocol Label Switching (GMPLS) Signaling Parameters |
Actions |
RFC3471 |
IETF Consensus action or documented in a specification (section 12) |
Generalized PID (G-PID) |
RFC4328 |
0-31743 IETF Standards Track RFC
31744-32767 Assigned Temporarily for Experimental Usage
32768-65535 Not Assigned |
Interface_ID Types |
RFC3471 |
IETF Consensus action or documented in a specification (section 12) |
LSP Encoding Types |
RFC4328 |
0-239 IETF Standards Track RFC
240-255 Assigned temporarily for Experimental Usage (Not registered with IANA) |
Switching Types |
RFC4328 |
0-255 IETF Standards Track RFC |
Generic Routing Encapsulation (GRE) Parameters |
GRE Protocol Types |
RFC2784 |
IANA does not assign |
GRE Version Numbers |
RFC2784 |
IETF consensus |
Generic Security Service Application Program Interface (GSSAPI) Service Names |
GSSAPI/Kerberos/SASL Service Names |
RFC2743 |
RFC (section 4.1) |
Geopriv Location Object Registries |
Method Tokens associated with the PIDF-LO Object |
RFC4119 |
First Come First Serve |
XML Namespaces for 'provided-by' elements for use with PIDF-LO objects |
RFC4119 |
Expert Review (Allison Mankin-Primary, Jon Peterson-Secondary) |
Geopriv Location Type Registries |
CAtypes |
RFC4676 |
Specification Required, Expert Review (TBD) |
Location Type Registry |
RFC4589 |
Expert Review (Martin Thomson)
Section 5.1 |
Location Type Registry XML |
RFC4589 |
Expert Review (Martin Thomson)
Section 5.1 |
Global Switch Management Protocol version 3 (GSMPv3) Parameters |
GSMPv3 Adaptation Type Name Space |
RFC3292 |
0x000-0x2FF: IETF consensus
0x300-0xFFF: FCFS
(section B5) |
GSMPv3 Event Flag Type Name Space |
RFC3292 |
Expert Review (section B10) |
GSMPv3 Failure Response Message Name Space |
RFC3292 |
0-59, 80-127, 160-255: IETF consensus
60-79, 128-159: Reserved for vendor private use
(section B4) |
GSMPv3 Label Type Name Space |
RFC3292 |
0xF00-0xAFF: IETF consensus
0xB00-0xEFF: RFC
0xF00-0xFFF: Reserved for vendor private use
(section B2)
|
GSMPv3 Message Type Name Space |
RFC3292 |
0-99: IETF consensus
100-199: RFC
200-249: RFC
250-255: Reserved for vendor private use
(section B1) |
GSMPv3 Model Type Name Space |
RFC3292 |
0: IETF consensus
1-200: RFC
201-255: Reserved for vendor private use
(B6) |
GSMPv3 Port Type Name Space |
RFC3292 |
0-127: IETF consensus
128-255: RFC
(section B7) |
GSMPv3 Result Type Nam Space |
RFC3292 |
Expert review (section B3) |
GSMPv3 Service ID Type Name Space |
RFC3292 |
0-123: IETF consensus
1024-65535: RFC (section B8) |
GSMPv3 Traffic Control Type Name Space |
RFC3292 |
Expert Review (section B9) |
Global Switched Telephone Network (GSTN) Extensions |
Qual2-Label |
RFC2846 |
(?) |
Qualif-Type 1 |
RFC2846, RFC3191, RFC3192 |
RFC (section ?) |
Service Selector |
RFC2846 and 3191 |
RFC (section ?) |
Group Domain of Interpretation (GDOI) |
Payload Type Values |
RFC3547 |
Standards Action |
H |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Hash Function Textual Names |
Hash Function Names |
RFC-ietf-mmusic-comedia-tls-06.txt |
Standards-track RFCs which update or obsolete [RFC3279] |
Hypertext Transfer Protocol (HTTP) Digest Algorithm Values |
HTTP Digest Algorithm Values |
RFC3230 (?) |
(?) |
Hypertext Transfer Protocol (HTTP) Parameters |
Content-Coding Values |
RFC2616 |
First Come First Serve with specification recommended |
Transfer-Coding Values |
RFC2616 |
First Come First Serve with specification recommended |
Hypertext Transfer Protocol (HTTP) Status Codes |
HTTP Status Codes |
RFC2817 |
RFC and FCFS (section 10.2) |
Hypertext Transfer Protocol (HTTP) Upgrade Tokens |
HTTP Upgrade Tokens |
RFC2817 |
FCFS (must follow rules set forth in BCP 26) (section 7) |
I |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
IANA Address Family Numbers MIB |
IANA Address Family Numbers MIB |
(?) |
(?) |
IANA Charset MIB |
IANA Charset MIB |
RFC3808 |
See Character Sets |
IANA Finisher MIB |
IANA Finisher MIB |
RFC3806 |
(?) |
IANA ifTypes MIB |
IANA ifTypes MIB |
RFC2863 (?) |
Review by "expert" (Bert Wijnen and Keith McCloghrie) |
IANA IP Route Protocol MIB |
IANA IP Route Protocol MIB |
RFC2932 |
RFC or expert review |
IANA IPPM Metrics Registry MIB |
IANA IPPM Metrics Registry MIB |
RFC4148 |
Specification Required |
IANA ITU Alarm TC MIB |
IANA ITU Alarm TC MIB |
RFC3877 |
(?) |
IANA Language MIB Definitions |
IANA Language MIB Definitions |
RFC3165 |
Expert Review (Expert - Not designated) |
IANA Printer MIB |
IANA Printer MIB |
RFC3805 |
(?) |
IANA Tn3270eTC MIB |
IANA Tn3270eTC MIB |
RFC2561 |
Working Group Review (see DESCRIPTION clause associated with the MODULE-IDENTITY statement) |
IANA-MALLOC-MIB |
IANA MALLOC MIB |
RFC3559 |
RFC or designated expert
review.
(section 4) |
IEEE 802 Numbers |
IEEE 802 Numbers |
RFC (?) |
Assigned by IEEE standards office |
IETF Protocol Parameter Identifiers |
IETF URN Sub-namespace for Registered Protocol Parameters |
RFC3553 |
IETF Consensus |
Instance Manipulation Values |
Instance Manipulation Values |
RFC (?) |
(?) |
Instant Messaging SRV Protocol |
Label Registry |
RFC3861 |
Specification Required |
Integrated Service Parameters |
Compression Hints |
RFC (?) |
(?) |
Parameter Names |
RFC2216 |
1-127: Parameters defined in RFC 2215
128-254: Parameters defined by author of service specification document
(Service and Data Element Naming) |
Service Names |
RFC2216 |
2-127: RFC
127 and above: Expiramental use
(Service and Data Element Naming) |
Internationalized Domain Names (IDN) |
IANA Repository of TLD IDN Practices |
RFC3743 |
See http://www.iana.org/assignments/idn/ |
Internet Control Message Protocol (ICMP) Parameters |
"Code" Fields |
RFC (?) |
(?) |
ICMP Type Numbers |
RFC2939 (?) |
RFC (section 7) |
Internet Control Message Protocol version 6 (ICMPv6) Parameters |
"Code" Fields |
RFC2463 (?) |
(?) |
IPv6 Neighbor Discovery Option Formats |
RFC2463 (?) |
(?) |
IPv6 Type Numbers |
RFC2463 (?) |
(?) |
Qtypes |
RFC-ietf-ipngwg-icmp-name-lookups-15.txt |
IETF Consensus |
Internet Group Management Protocol (IGMP) Type Numbers |
"Code" Fields |
RFC3228 |
IESG approval or standards action (section 2) |
IGMP Type Numbers |
RFC3228 |
IESG approval or standards action (section 2) |
Internet Key Exchange (IKE) Attributes |
IKE Attributes |
RFC2409 |
RFC (standards track) (section 11.1) |
Internet Key Exchange Version 2 (IKEv2) Parameters |
Authentication Methods |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Certificate Encodings |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Configuration Payload Attribute Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Configuration Payload CFG Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Diffie-Hellmann Transform Ids |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Encryption Transform IDs |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Exchange Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Identification Payload ID Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Integrity Algorithm Transform IDs |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Notification IPCOMP Transform IDs |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Notify Message Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Payload Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Pseudo-random Function Transform IDs |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Security Protocol Identifiers |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Traffic Selector Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Transform Attribute Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Transform Types |
RFC4306 |
Expert Review (Expert-Tero Kivinen) |
Internet Message Access Protocol (IMAP) 4 Capabilities |
IMAP 4 Cabapilities |
RFC2060 |
(?) |
IMAP4 List Extended |
RFC-ietf-imapext-list-extensions-18.txt |
IANA approval Template is at [RFCietf-imapext-list-extensions-18.txt] section 9.3 |
Internet Open Trading Protocol (IOTP) Codes |
IOTP Codes |
RFC2801 |
(?) (Expert-David Burdett) |
Internet Printing Protocol (IPP) Registrations |
Attribute Group Tags |
RFC2911 |
Expert review/assignment (Expert-Carl Uno Manros)
|
Attribute Syntaxes |
RFC2911 |
Expert review/assignment
(section 6.3) (Expert-Carl Uno Manros)
|
Enum Attribute Values |
RFC2911 |
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 Values |
RFC2911 |
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) |
Operations |
RFC2911 |
RFC (standards track) and expert review/assignment
(section 6.4) (Expert-Carl Uno Manros)
|
Out-of-Band Attribute Group Tags |
RFC2911 |
Expert review/assignment
(section 6.6) (Expert-Carl Uno Manros)
|
Status Codes |
RFC2911 |
Expert review/assignment (section 6.6) (Expert-Carl Uno Manros)
|
Internet Protocol (IP) Option Numbers |
IP Option Numbers |
RFC2780 |
IESG Approval, IETF Consensus or Standards Action
|
IP Time to Live Parameter |
RFC (?) |
(?) |
Recommended values for TOS |
RFC (?) |
(?) |
Internet Protocol (IP) Version Number |
IP TOS Paramters |
RFC (?) |
(?) |
IP Version Number |
RFC (?) |
(?) |
Internet Protocol version 4 (IPv4) Address Space |
IPv4 Address Space |
RFC2050 |
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 Octet |
RFC3168 |
RFC (section 23) |
Internet Protocol version 6 (IPv6) Address Space |
IPv6 Address Space |
RFC2373 |
Defined and Registered by the IANA. |
Internet Protocol version 6 (IPv6) Anycast Address Allocations |
IPv6 Anycast Address Allocations |
RFC2373 |
(?) |
Internet Protocol version 6 (IPv6) Global Unicast Allocations |
iana-ipv6-special-registry |
[RFC-huston-ipv6-iana-specials-01.txt] |
IETF Concensus |
IPv6 Global Unicast Allocations |
RFC2928 |
Contact IANA for information. |
Internet Protocol version 6 (IPv6) Multicast Address Allocations |
Address Allocations |
RFC3307 |
Expert Review (Expert-David Meyer) |
Internet Protocol version 6 (IPv6) Parameters |
IPv6 Parameters |
RFC (?) |
(?) |
Internet Protocol version 6 (IPv6) Router Alert Option Values |
IPv6 Router Alert Option Values |
RFC2711 |
IETF consensus (section 5) |
Internet Protocol version 6 (IPv6) Sub-Top Level Aggregation (TLA) Identifier Assignments |
IPv6 Sub-TLA Assignments (DEPRECATED) |
RFC2450 |
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 Identifiers |
RFC (?) |
(?) |
Signature Encoding Algorithm Values |
RFC4359 |
Standards Action |
Internet Storage Name Service (iSNS) |
Block Storage Protocols |
RFC4171 |
Expert Review (by IPS WG Chair or designated expert) |
Standard iSNS Attributes |
RFC4171 |
IETF Consensus |
Internet/Xerox Network System (XNS) Protocol Mappings |
Internet/XNS Protocol Mappings |
RFC1764 |
(?) |
Intrusion Detection Exchange Protocol (IDXP) |
Options |
RFC-ietf-idwg-beep-idxp-07.txt |
(?) |
Intrusion Detection Message Exchange Format (IDMEF) Parameters |
Attribute Values |
RFC-ietf-idwg-idmef-xml-16.txt |
Specification Required by RFC |
Class Names and Attribute Names |
RFC-ietf-idwg-idmef-xml-16.txt |
IETF Consensus |
IPS Protocol |
Protocol Number field |
RFC3643 |
Standards Track RFCs approved by the IESG |
IPSec |
asn1-modules |
RFC4301 |
Specification Required |
IPsec Resource Record Parameters |
Algorithm Type Field |
RFC4025 |
IETF Consensus |
Gateway Type Field |
RFC4025 |
Standards Action |
IPv6 Multicast Permanent Group Identifiers |
Group Identifier Values |
RFC3307 |
Expert Review |
Robust Header Compression (ROHC) Configuration Option Suboption Identifier Values |
(?) |
(?) |
IS-IS |
Bandwidth Constraints Model Identifiers |
RFC4124 |
0-239 Specification Required
240-255 Private Use |
TLV Codepoints |
RFC3563 |
Expert review.
(section 3.3.1)
(Expert-ISIS WG chairs) |
iSCSI |
iSCSI authenication methods registry |
RFC3720 |
|
iSCSI digests registry |
RFC3720 |
|
iSCSI extended key registry |
RFC3720 |
|
SRP_GROUP key values |
RFC3720 |
|
K |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Kerberized Internet Negotiation of Keys (KINK) |
Error Codes |
RFC4430 |
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).
|
Message Types |
RFC4430 |
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).
|
Next Payload Types |
RFC4430 |
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).
|
Kerberos Parameters |
Checksum Type Numbers |
RFC3961 |
See: RFC3961
(expert-Ken Raeburn) |
Encryption Type Numbers |
RFC3961 |
See: RFC3961
(expert-Ken Raeburn) |
L |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Label Distribution Protocol (LDP) Name Spaces |
Experiment ID Name Space |
RFC3036 |
0x00000000 - 0xefffffff: FCFS
0xf0000000 - 0xffffffff: Private use
(section 4.5) |
Forwarding Equivalence Class (FEC) Type Name Space |
RFC3036 |
0-127: IETF consensus
128-191: FCFS
192-255: Private use
(section 4.3) |
Message Type Name Space |
RFC3036 |
0x0000-0x3DFF: IETF consensus
0x3E00-0x3EFF: Vendor private use
0x3F00-0x3EFF: Experimental use
(section 4.1) |
Status Code Name Space |
RFC3036 |
0x00000000-0x1FFFFFFF: IETF consensus
0x20000000 - 0x3EFFFFFF: FCFS
0x3F000000 - 0x3FFFFFFF: Private Use
(section 4.4) |
Table, Length, and Value (TLV) Type Name Space |
RFC3036 |
0x0000-0x3DFF: IETF consensus
0x3E00-0x3EFFF: Vendor private use
0x3F00-0x3EFF: Experimental use
(section 4.1) |
Language Tags |
Language Subtag Registry |
RFC4646 |
Expert Review (Michael Everson) |
Language Tag Extensions Registry |
RFC4646 |
IESG Approval |
Language Tags - OBSOLETE |
RFC4646 |
No further registrations in this registry. |
Language Tags Directory - OBSOLETE |
RFC4646 |
No further registrations in this registry. |
Layer Two Tunneling Protocol (L2TP) Parameters |
ATM Alarm Status AVP (Attribute Type 88) Values |
RFC4454 |
Circuit Status Reason values for the SLI message - Expert Review
General ATM Alarm failures - Expert Review |
ATM-Specific Sublayer bits |
RFC4454 |
IETF Consensus |
Control Message AVP's |
RFC3438 |
Expert review (section 2.1)
Carlos Pignataro (primary)
Ron Da Silva (secondary)
Ignacio Goyret (secondary) |
Message Type AVP Values |
RFC3438 |
Expert Review (section 2.2)
Carlos Pignataro (primary)
Ron Da Silva (secondary)
Ignacio Goyret (secondary) |
Remaining Values |
RFC3438 |
Expert review (section 2.4)
Carlos Pignataro (primary)
Ron Da Silva (secondary)
Ignacio Goyret (secondary) |
Result Code AVP Values |
RFC3438 |
Expert review (section 2.3)Carlos Pignataro (primary)
Ron Da Silva (secondary)
Ignacio Goyret (secondary) |
Lightweight Directory Access Protocol (LDAP) |
Attribute Description Options |
RFC-ietf-ldapbis-bcp64-07.txt |
x- Private Use (can not be registered)
e- Reserved for Experiments, First Come First Serve
All others: Standards Action or Expert Review with Specification
|
Bind Authentication Method |
RFC-ietf-ldapbis-bcp64-07.txt |
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-)
4096-16383 First Come First Serve (Shall start with e-)
16384 and higher Private Use (Shall start with x-)
|
LDAP authzid prefixes |
RFC-ietf-ldapbis-bcp64-07.txt |
x- Private Use
e- Reserved for Experiments, First Come First Serve
All others, Standards Action or Expert Review with Specification Required
|
LDAP Filter Choices |
RFC-ietf-ldapbis-bcp64-07.txt |
Standards Action
|
LDAP ModifyRequest Operations |
RFC-ietf-ldapbis-bcp64-07.txt |
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-)
4096-16383 First Come First Serve (Shall start with e-)
16384 and higher Private Use (Shall start with x-)
|
LDAP Search Scopes |
RFC-ietf-ldapbis-bcp64-07.txt |
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-)
4096-16383 First Come First Serve (Shall start with e-)
16384 and higher Private Use (Shall start with x-)
|
LDAP Syntaxes |
RFC-ietf-ldapbis-bcp64-07.txt |
First Come First Serve with Specification Required
|
LDAPMessage types |
RFC-ietf-ldapbis-bcp64-07.txt |
Standards Action |
Object Identifier Discriptors |
RFC-ietf-ldapbis-bcp64-07.txt |
x- Private Use (can not be registered)
e- Reserved for Experiments, First Come First Serve
All others: Expert Review
|
pcimSchema LDAP Descriptors |
RFC-ietf-policy-core-schema-16.txt |
(tbd) |
Protocol Mechanisms |
RFC-ietf-ldapbis-bcp64-07.txt |
First Come First Serve |
Result Code values |
RFC-ietf-ldapbis-bcp64-07.txt |
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-)
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 Types |
RFC4204 |
21-127: Standards Action
128-247: Expert Review
|
LMP Object Class and Class Type (C-Type) |
RFC4204 |
See each individual type. |
Link Relations |
Link Relations |
RFC4287 |
IESG Approval (via request to IANA) |
M |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Machine Names |
Machine Names |
RFC (?) |
(?) |
Mail Content Disposition Values and Parameters |
Handling Parameter Values |
(?) |
(?) |
Mail Content Disposition Parameter Values |
RFC (?) |
(?) |
Mail Content Disposition Values |
RFC (?) |
(?) |
Mail Content Dispositon Parameters |
RFC (?) |
(?) |
Mail Parameters |
Diagnostic Types |
RFC1891 |
(?) |
Mail Address Types |
(?) |
(?) |
Mail Encoding Header Field Keywords |
RFC1505 |
(?) |
Mail Encryption Types |
(?) |
(?) |
Mail Service Types |
RFC (?) |
(?) |
Mail System Names |
(?) |
(?) |
Mail Transmission Types |
RFC822 (?) |
(?) |
MTA Name Types |
RFC1891 |
(?) |
SMTP Service Extensions |
(?) |
(?) |
Media Feature Tags |
features.global-tree |
RFC2506 |
Expert Review |
features.ietf-tree |
RFC2506 |
IETF Consensus |
features.sip-tree |
RFC3840 |
IETF Consensus |
features.uri-tree |
RFC2506 |
Unregistered (formed from uri) |
Media Gateway Control Protocol (MGCP) |
List of Extension Digit Map Letters |
RFC3435 |
Expert review (section C.1)
(Expert-Brian Rosen) |
LocalConnectionsOptions Sub-Registry |
RFC3435 |
Expert review (section C.3)
(Expert-Brian Rosen) |
MGCP Package Sub-Registry |
RFC3435 |
Expert review (section C.1)
(Expert-Brian Rosen) |
Megaco/H.248 Packages |
Error Codes |
RFC3525 |
Expert review or IETF consensus
(Expert-Tom PT Taylor) |
Private Packages |
RFC3525 |
Expert review or IETF consensus
(Expert-Tom PT Taylor) |
Profile Names |
RFC3525 |
Expert review or IETF consensus
(Expert-Tom PT Taylor) |
Public Packages |
RFC3525 |
Expert review or IETF consensus
(Expert-Tom PT Taylor) |
Service Change Reasons |
RFC3525 |
Expert review or IETF consensus
(Expert-Tom PT Taylor) |
Message Disposition Notification (MDN) Parameters |
MDN-Disposition-Modifier-Names |
RFC3798 |
(?) |
MDN-Dispositon-Notification-Option Names |
RFC3798 |
(?) |
MDN-Extension-Field-Names |
RFC3798 |
(?) |
Message Header Messages |
Permanent Message Header Fields |
RFC3864 |
(need to fill in) |
Provisional Message Header Fields |
RFC3864 |
(need to fill in) |
Message Tracking Query Protocol (MTQP) |
Options |
RFC3887 |
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 Parameters |
RFC (?) |
(?) |
Mobile Internet Protocol (IP) Numbers |
Code Values |
RFC3220 |
Expert review (Phil Roberts)
|
Code Values for Mobile IP Handoff Reply Messages |
RFC-ietf-mobileip-lowlatency-handoffs-v4 |
IETF Consensus |
Dynamic HA Extension subtypes |
RFC-ietf-mip4-dynamic-assignment-07.txt |
IETF Consensus |
FA Error Extension subtypes (value 45) |
RFC-ietf-mip4-faerr-02.txt |
Expert Review |
Generalised Link Layer Address Registration Extension Subtypes and Generalised Link Layer Address Advertisement Extension Subtypes |
RFC-ietf-mobileip-lowlatency-handoffs-v4 |
IETF Consensus |
User Datagram Protocol (UDP) Tunnel Reply Extension: Subtype |
RFC3519 |
Expert review. Also specification required. (section 8) (Expert-Phil Roberts) |
User Datagram Protocol (UDP) Tunnel Request Extension: Subtype |
RFC3519 |
Expert review. Also specification required. (section 8) (Expert-Phil Roberts) |
Mobile IPv6 |
Enumerating Algorithms |
RFC4285 |
IETF Consensus |
Mobile Node Identifier Option Subtypes |
RFC4283 |
Standards Action |
Mobility Header Types |
RFC3775 |
Standards Action |
Mobility Options |
RFC3775 |
Standards Action |
Status Codes |
RFC3775 |
Standards Action |
Subtype field fo the MN-HA and MN-AAA authentication mobility options |
RFC4285 |
IETF Consensus |
Multicast Address (IPv4) |
Address Assignments/Allocations |
RFC3171 |
Expert review, IESG approval, or standards action process
(Expert-David Meyer)
http://www.iana.org/cgi-bin/multicast.pl |
Multicast Address Dynamic Client Allocation Protocol (MADCAP) Parameters |
MADCAP Error Codes |
RFC2730 |
IETF consensus (section 5) |
MADCAP Feature Codes |
RFD 2730 |
IETF consensus (section 5) |
MADCAP Lease Identifier Types |
RFC2730 |
IETF consensus |
MADCAP Message Types |
RFC2730 |
IETF consensus |
MADCAP Options |
RFC2730 |
IETF consensus (section 5) |
Multicast Address-Set Claim (MASC) Protocol Parameters |
Message Types |
RFC2909 |
IETF consensus
(section 15) |
NOTIFICATION Message Error Codes and Subcodes |
RFC2909 |
IETF consensus (section 15) |
OPEN Message Optional Parameter Types |
RFC2909 |
IETF consensus (section 15) |
UPDATE Message Attribute Types |
RFC2909 |
IETF consensus (section 15) |
UPDATE Message Optional Parameter Types |
RFC2909 |
IETF consensus (section 15) |
Multicast Source Discovery Protocol (MSDP) |
TLV Values |
RFC3618 |
8-200: IESG Approval or Standards Action Process
(section 19.1)
201-255: Experimental use
(section 19.2) |
Multimedia Internet KEYing (MIKEY) |
Key ID Types |
RFC-ietf-msec-newtype-keyid-05.txt |
0-240 IETF Consensus,
241-255 Private Use
|
Payload Name Spaces |
RFC3830 |
0-240: IETF Consensus
241-255: Private Use
Unless stated otherwise in Registry |
Multiprotocol Label Switching Architecture (MPLS) |
Identifiers |
RFC3033 |
(?) |
Label Switched Paths (LSPs) Parameters - Message Types |
RFC4379 |
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 Modes |
RFC4379 |
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 Codes |
RFC4379 |
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 - TLVs |
RFC4379 |
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 Values |
RFC3032 |
(?) |
Multipurpose Internet Mail Extensions (MIME) |
Access-Types |
RFC4289 |
Multiple registration procedures. See section 2 of RFC4289 |
audio/telephone-event - Event Code Registry |
RFC-ietf-avt-RFC2833bis-15.txt |
Specification Required and Expert Review
|
Media Type Parameters |
(?) |
(?) |
Media Type Sub-Parameters |
RFC3640 |
(?) |
Media Types |
RFC4288 |
Expert Review (Ned Freed) |
Sub-parameter registry for application/mbox |
RFC-hall-mime-app-mbox-04.txt |
Specification Required |
Sub-Parameter registry for audio/rtp-midi |
RFC-ietf-avt-rtp-midi-format-15.txt |
IETF Standards-Track Document or Specification Requried (see indiviual sub-registries) |
Sub-Parameter registry for mode=rtp-midi of audio/mpeg4-generic |
RFC-ietf-avt-rtp-midi-format-15.txt |
IETF Standards-Track Document or Specification Requried (see indiviual sub-registries) |
Sub-parameter registry for video/raw |
RFC4175 |
Specification Required
(Values for the sampling and colorimetry parameters) |
text/directory MIME Parameters |
RFC2425 |
Two week comment period, Expert review (Paul Hoffman) |
text/directory MIME Profiles |
RFC2425 |
Two week comment period, expert review (Paul Hoffman) |
text/directory MIME Types |
RFC2425 |
Two week comment period, Expert review (Paul Hoffman) |
N |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Namespace for IP Over IEEE 1394 |
Multicast Channel Allocation Protocol (MCAP) Parameters |
RFC (?) |
(?) |
Values Registered for the Unit_SW_Version |
RFC3734 |
IANA allocation (section 10) |
Network File System version 4 (NFSv4) Named Attributes |
Named Attributes |
RFC3530 |
Informational RFC (section 17.1) |
Network News Transfer Protocol (NNTP) |
Network News Transfer Protocol (NNTP) Parameters |
RFC3977 |
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 Types |
RFC2332 |
Expert or area director review with documentation (section 9)
(Expert-Jim Luciani) |
Packet Types |
RFC2332 |
Expert or area director review with documentation (section 9)
(Expert-Jim Luciani) |
Novell Service Advisor Protocol (SAP) Numbers |
Novell Object Types |
Not IETF |
IANA does not assign |
O |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
One Time Password Parameters |
Algorithm Identifier |
RFC2289 |
(?) |
Extension Set ID |
RFC2289 (?) |
(?) |
Open Network Computing (ONC) Remote Procedure Call (RPC) Network Identifiers |
r_netid |
RFC3530 |
Informational RFC (section17.2) |
Open Shortest Path First (OSPF) |
Authentication Codes |
RFC1583 (?) |
(?) |
Bandwidth Constraints Model Identifiers |
RFC4124 |
0-239 Specification Required
240-255 Private Use |
Opaque Link-State Advertisements (LSA) Option Types |
RFC2370 |
0-127: IETF consensus (section 7) |
Signature Algorithms |
RFC (?) |
(?) |
Traffic Engineering TLVs |
RFC3630 |
3-32767: Standards Action
(section 6)
332768-32777: Experimental use
(section 6)
32778-65535: Standards Track RFC (section 6) |
Open Systems Interconnection (OSI) Network Service Access Point Addresses (NSAPA) Internet Code Point |
OSI NSAPA Internet Code Point |
RFC-gray-1888bis-03.txt |
2-9999 IETF Consensus |
Operating System Names |
Operating System Names |
RFC952 (?) |
(?) |
Specific Parameters |
RFC-ietf-ftpext-mlst-16.txt |
First Come First Serve
|
OPES Callout Protocol Core |
Features |
RFC4047 |
Designated expert review for standards-track registration
|
Optimized Link State Routing Protocol (OLSR) |
Optimized Link State Routing Protocol (OLSR) |
RFC3626 |
5-127: Standards Action
(section 22)
128-255: Reserved for Private/Local use.
(section 22) |
P |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Per Hop Behavior Identification Codes |
ID Codes |
RFC3140 |
Expert or area director review (section 4) |
PKIX Parameters |
PKIX SRV Protocol Labels |
RFC4386 |
Specification Required |
Point to Point Protocol (PPP) Numbers |
Bridging MAC Types |
RFC (?) |
Expert review (Expert-Karl Fox) |
Internet Packet Exchange (IPX) Compression Protocol Values |
RFC (?) |
Expert review (Expert-Karl Fox) |
Internet Packet Exchange (IPX) Routing Protocol Options |
RFC (?) |
Expert review (Expert-Karl Fox) |
Internet Protocol (IP) Header Compression Configuration Option Suboption Types |
RFC (?) |
(?) |
Internetwork Packet Exchange Control Protocol (IPXCP) Configuration Options |
RFC (?) |
Expert review (Expert-Karl Fox) |
IP Header Compression Configuration Option Suboption Types |
RFC3544 |
Standards Action Process
(section 7) |
IP-Compression-Protocol Types |
(?) |
(?) |
IP-Compression-Protocol Types |
RFC1322 |
IETF Consensus |
IPv6-Compression-Protocol |
RFC2023 |
IETF Consensus |
Link Control Protocol (LCP) Callback Operation Fields |
RFC (?) |
(?) |
Multilink Endpoint Discriminator Class |
RFC (?) |
(?) |
NetBIOS Frames Control Protocol (NBFCP) Configuration Options |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Apple Talk Control Protocol (ATCP) Configuration Option Types |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Authentication Algorithms |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Banyan Vines Control Protocol (BVCP) Configuration Option Types |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Bridging Configuration Option Types |
RFC (?) |
Expert Review (Expert-Karl Fox) |
PPP Bridging Spanning Tree |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Compression Control Protocol (CCP) Configuration Option Types |
RFC (?) |
Expert Review (Expert-Karl Fox) |
PPP Data Link Layer (DLL) Protocol Numbers |
(?) |
Expert review (Expert-Karl Fox) |
PPP Encryption Control Protocol (ECP) Configuration Option Types |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Extensible Authentication Protocol (EAP) Request/Response Types |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Internet Protocol Control Protocol (IPCP) Configuration Option Types |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP IPv6CP Configuration Options |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Link Control Protocol (LCP) Configuration Option Types |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Link Control Protocol (LCP) FCS Alternatives |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Link Control Protocol (LCP), Compression Control Protocol (CCP), and Internet Protocol Control (IPCP) Codes |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Numbers |
RFC (?) |
(?) |
PPP OSI Network Layer Control Protocol (OSINLCP) Configuration Option Types |
RFC (?) |
Expert review (Expert-Karl Fox) |
PPP Vendour Specific Organizationally Unique Identifiers (OUI) Options |
RFC (?) |
Expert review (Expert-Karl Fox) |
Robust Header Compression (ROHC) Configuratin Option Suboption Identifier Values |
RFC (?) |
(?) |
Serial Data Control Protocol (SDCP) Configuration Options |
RFC (?) |
Expert review (Expert-Karl Fox) |
Port Numbers |
System |
RFC2780 |
Specification Required |
User |
RFC2780 |
IANA review |
Post Office Protocol version 3 (POP3) Extension Mechanism |
POP3 Capabilities |
RFC2449 |
Standards track or IESG approved experimental RFC (section 9) |
POP3 Response Codes |
RFC2449 |
RFC specification required (section 9) |
Preemption Namespace Registry |
Preemption Namespaces |
RFC4411 |
Standards Track Document |
Presence SRV Protocol |
Label Registry |
RFC3861 |
Specification Required |
Printer Language Numbers |
Printer Language Numbers |
RFC1759 (?) |
Working group approval |
Pronet 80 Type Numbers |
Pronet 80 Type Numbers |
Not IETF |
Not assigned by IANA |
Protocol Independent Multicast (PIM) |
Address Family Numbers |
RFC3973 |
0-127 Same meaning as Address Family Numbers
128-250 IESG Approval
251-255 Private Use |
Hello Options |
RFC4601 |
FCFS (expire in 1 year)
Permanenet assignments require a specification (specification required) |
Protocol Names |
Protocol Names |
RFC952 |
(?)
(Also Service Names) |
Protocol Numbers |
Protocol Numbers |
RFC2780 |
IESG or standards action process
Expert review in cases of NDA |
Proxy Certificate Policy |
Languages |
RFC3820 |
IETF Standards Action |
Pseudo Wires Name Spaces (PWE3) |
Attachment Group Identifier (AGI) Type Registry |
RFC4446 |
2 through 64 - Expert Review
65 through 127, and 255 - IETF Consensus
128 through 254 - First Come First Serve (reserved for vendor proprietary extensions) |
Attachment Individual Identifier Type Registry |
RFC4446 |
2 through 64 - Expert Review
65 through 127, and 255 - IETF Consensus
128 through 254 - First Come First Serve (reserved for vendor proprietary extensions) |
MPLS Pseudowire Types Registry |
RFC4446 |
31 through 1024 - Expert Review
1025 through 4096, and 32767 - IETF Consensus
4097 through 32766 - First Come First Serve (reserved for vendor proprietary extensions) |
Pseudo Wire Status Codes Registry |
RFC4446 |
5 through 31 - Expert Review
|
Pseudowire Associated Channel Types Registry |
RFC4385 |
IETF Consensus
|
Pseudowire Interface Parameters Sub-TLV Type Registry |
RFC4446 |
13 through 64 - Expert Review
65 through 127, and 255 - IETF Consensus
128 through 254 - First Come First Serve (reserved for vendor proprietary extensions) |
Public Data Network Numbers |
14.0.0.0-14.000.255.255 |
RFC1356 |
(?) |
Publisher Identification Codes |
Publisher ID Codes |
RFC2780 |
IANA does not assign |
R |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Radius Types |
Radius Attribute Types |
RFC3575 |
IETF Consensus |
Radius Attribute Values |
RFC3575 |
Standards Action |
Radius Packet Type Codes |
RFC3575 |
IESG Approval |
Vendor ID's |
RFC2865 |
Obtain a Private Enterprise Number |
Real Time Streaming Protocol (RTSP)/1.0 Parameters |
RTSP/1.0 Headers |
RFC2326 |
Standards Document, preferable an IETF RFC
|
RTSP/1.0 Methods |
RFC2326 |
IETF standard track document
|
RTSP/1.0 Option Tags |
RFC2326 |
Specification Required
|
RTSP/1.0 Status Codes |
RFC2326 |
IETF standards track document
|
Real-Time Transport Protocol (RTP) Parameters |
FMT Values for RTPFB and PSFB Payload Types |
RFC-ietf-avt-rtcp-feedback-11.txt |
2-30 Specification Required |
Real-Time Transport Protocol (RTP) Payload Format MIME types |
RFC3551 |
Standards Action Process or
expert approval
(Expert-Steve Casner) |
Real-Time Transport Protocol (RTP) Payload types (PT) for standard audio and video encodings |
RFC3551 |
Registry closed
(section C) |
Real-Time Transport Protocol (RTP) Profile Names |
RFC3550 |
Standards Action Process
or expert approval
(section D)
(Expert-Steve Casner) |
RTP RTCP Control Packet Types |
RFC3550 |
(?) |
RTP SDES Item Types |
RFC3550 |
(?) |
Realm Specific Internet Protocol (RSIP) Parameters |
Address Types |
RFC3103 |
Specification required (section 12) |
Flow Policy |
RFC3103 |
Specification required (section 12) |
RSIP Error Codes |
RFC3103 |
Specification required (section 12) |
RSIP Message Type Codes |
RFC3103 |
Specification required (section 12) |
RSIP Message Type Codes |
RFC3103 |
Specification required
(section 12) |
RSIP Methods |
RFC3103 |
Specification required (section 12) |
RSIP Parameters |
RFC3103 |
Specification required (section 12) |
Tunnel Types |
RFC3103 |
Specification required (section 12) |
Vendor ID |
RFC3103 |
Specification required (section 12) |
Registrar Identification Codes |
Registrar ID Codes |
Not defined by an RFC |
ICANN Accredited Registrars |
Reliable Mutlicast Transport (RMT) FEC Encoding IDs and FEC Instance IDs |
Encoding ID's |
RFC3452 |
RFC required (section 8.1) |
Instance ID's |
RFC3452 |
FCFS (section 8.1) |
Resource ReSerVation Protocol (RSVP) Parameters |
Class Names, Class Numbers, and Class Types |
RFC3936 |
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. |
Error Codes and Values |
RFC3936 |
0-239 Standards Action
240-251 Expert Review
252-255 Vendor Private Use |
Message Types |
RFC3936 |
0-239 Standards Action
240-255 Expert Review |
Miscellaneous |
RFC (?) |
(?) |
Virtural Destination Ports |
RFC2207 |
0 Illegal Value
1-10 Reserved (Contact Authors)
11-8191 Assigned by IANA
8192-65535 Dynamic
|
RObust Header Compression (ROHC) |
Profile Identifiers |
RFC3095 |
0-127: Standards Track RFC
128-254: Other specs that meet this requirement such as an Informational RFC |
Suboption Identifier Values |
RFC3241 |
Specification Required
0-127: IETF standards-track
128-254: Available for others |
Route Distinguisher Types |
Type Values |
RFC4364 |
High-order bit of 0 - First Come First Serve
High-order bit of 1 - IETF Consensus |
Routing Information Protocol (RIP) Types |
Message Types |
RFC1723 |
(?) |
RSVP TE Parameters |
Attributes Flags |
RFC4420 |
IETF Consensus |
Attributes TLV Space |
RFC4420 |
IETF Consensus |
RTP Control Protocol Extended Reports (RTCP XR) |
Block Types |
RFC3611 |
Specification Required |
SDP Parameters |
RFC3611 |
Specification Required |
S |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
S-NAPTR Parameters |
Application Protocol Tags |
RFC3958 |
Specification Required in form of a RFC |
Application Service Tags |
RFC3958 |
Specification Required in form of a RFC |
Secure Shell (SSH) Protocol Parameters |
Connection Protocol Assigned Names - Global Request Names |
RFC4250 |
IETF Consensus |
Security Parameters Index |
SPI Values (other ranges?) |
RFC1826 |
RFC required (section 3.2) |
Server Cache Synchronization Protocol (SCSP) Parameters |
Protocol ID's |
RFC2334 |
RFC, product of standards body, or expert review |
Service Location Protocol Version 2 (SLPv2) Registrations |
Cryptographic BSD Codes |
RFC2608 |
IETF Consensus |
Error Numbers |
RFC2608 |
IETF Standards Action |
SLPv2 Function ID's |
RFC2608 |
12-255: IETF consensus |
Service Names |
Service Names |
(?) |
(?) |
Session Description Protocol (SDP) Parameters |
ack and nack Attribute Values |
RFC-ietf-avt-rtcp-feedback-11.txt |
First Come First Serve with a permanent, stable, and publically accessible document |
rtcp-fb Attribute Values |
RFC-ietf-avt-rtcp-feedback-11.txt |
First Come First Serve
with permanent, stable, and publically accessible document. |
Semantics for the "Group" SDP Attribute |
RFC3388 |
Standards track document (section 10) |
Types and SDP Names |
RFC4566 |
(?) |
Session Initiation Protocol (SIP) Event Types Namespace |
Event Packages |
RFC3427 |
Informational RFC approved by the IESG |
Event Template Packages |
RFC3427 |
Standards Track RFC |
Session Initiation Protocol (SIP) Parameters |
Header Field Parameters and Parameter Values |
RFC3968 |
IETF Consensus (in the form of a RFC - No requirement that it be standards-track) |
Identity-Info Algorithm Parameter Values |
RFC4474 |
Standards Track RFC |
Identity-Info Parameters |
RFC4474 |
Standards Track RFC |
Option Tags |
RFC3261, RFC3427 |
Publication of standards track
(section 27.1) |
Precondition Types used with SIP |
RFC3312 |
Publication of standards track RFC (section 14) |
Reason Protocols |
RFC3326 |
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 Field |
RFC3263 |
Standards Track RFC |
SIP/SIPS URI Parameters |
RFC3969 |
Specification Required |
Session Initiation Protocol (SIP) Parameters |
Header Fields |
RFC3261, RFC3427 |
RFC publication (section 27.3) |
Methods and Response Codes |
RFC3261, RFC3427 |
RFC publication (section 27.4) |
Security Mechanism Names |
RFC3329 |
IETF consensus (section 6) |
SIP Table of Mappings From Service Field Values to Transport Protocols |
RFC3263 |
Publication of standards track RFC (section 9) |
Warning Codes |
RFC3261, RFC3427 |
RFC publication (section 27.4) |
Session Initiation Protocol (SIP) Privacy Header Values |
Header Values |
RFC3323 |
RFC's approved by the SIP working group (section 7) |
Sieve Extensions |
Extensions |
RFC3028 |
Standards track or IESG approved experimental RFC |
SIG |
SIG (0) Algorithm Numbers |
RFC-ietf-dnsext-dnssec-2535typecode-chan |
(tbd) |
Signaling Compression (SigComp) |
Namespace |
RFC3320 |
Standards Track RFC approved by the IESG |
Signaling User Adaptation Layer Assignments |
Message Classes |
RFC3331, RFC4666 |
IETF consensus action (section 8.2) |
Message Parameters |
RFC3331, RFC4666 |
IETF consensus action (section 8.2) |
Message Types |
RFC3331, RFC4666 |
IETF consensus action (section 8.2) |
Simple Authentication and Security Layer (SASL) Mechanisms |
SASL Mechanisms |
RFC2222 |
(?) |
Simple Gateway Monitoring Protocol (SGMP) Vendor Specific Codes |
SGMP Vendor Specific Codes (Obsolete) |
RFC1028 (?) |
No further registrations |
Simple Mail Transfer Protocol (SMTP) Service Extensions |
Keywords |
RFC1869 |
Standards track RFC or a document defining an IESG approved experimental protocol |
Simple Network Management Protocol (SNMP) Number Spaces |
Processing Models |
RFC2571, RFC3411 |
Standards track document (section 6.2) |
Security Models |
RFC2571, RFC3411 |
Standards track document (section 6.1) |
SnmpEngineID Formats |
RFC2571, RFC3411 |
Standards track document (section 6.3) |
Snoop |
Datalink Types |
RFC3827 |
FCFS (26 and above)
(10-15 and 19-25 Reserved) |
SOCKS Methods |
SOCKS Method Values |
RFC1928 (?) |
(?) |
Special Peoples Number Registry (SPNR) |
Special Peoples Number Registry (SPNR) |
n/a |
Not an IETF Registry. Contact IANA. |
Stream Control Transmission Protocol (SCTP) Parameters |
Cause Codes |
RFC2960 |
Specification required action (section 13.3) |
Chunk Parameter Types |
RFC2960 |
IETF consensus action (section 13.2) |
Chunk Types |
RFC2960 |
IETF consensus action (section 13.1) |
SCTP Payload Protocol Identifiers |
RFC2960 |
FCFS (section 13.4) |
Stringprep Profiles |
Profile Names |
RFC3454 |
IETF consensus (section 10) |
Structure of Management Information (SMI) Numbers |
Experimental Numbers |
(?) |
(?) |
ifType definitions |
(?) |
(?) |
mib-2 Numbers |
RFC1213, RFC2578 |
RFC Required |
Misc Parameters |
(?) |
(?) |
mplsStdMIB (SIC) |
RFC-etf-ccamp-gmpls-te-mib-16.txt |
Standard Action section 11.2.1 |
SMI Security for Mechanism msec Codes |
(?) |
IETF Consensus |
SMI Security for Mechanism msec content-types |
RFC4534 |
IETF Consensus |
SMI Security for Mechanism msec data-policies |
RFC4534 |
IETF Consensus |
SMI Security for Mechanism msec distributed-operations-methods |
RFC4534 |
IETF Consensus |
SMI Security for Mechanism msec module-identifers |
RFC4534 |
IETF Consensus |
SMI Security for Mechanism msec protocol-identifiers |
RFC4534 |
IETF Consensus |
SMI Security for Mechanism msec rekey-methods |
RFC4534 |
IETF Consensus |
SMI Security for Mechanism msec rekey-reliability-methods |
RFC4534 |
IETF Consensus |
SMI Security for Mechanism msec security-suites |
RFC4534 |
IETF Consensus |
Transmission Numbers |
RFC (?) |
RFC required |
Structured Data Exchange Format (SDXF) Parameters |
Compression Methods for SDXF |
RFC3072 |
RFC or equivalent (section 12.3) |
Encryption Methods for SDXF |
RFC3072 |
RFC or equivalent (section 12.3) |
Subsequence Address Family Identifier (SAFI) Parameters |
SAFI Values |
RFC2858 |
4-63: IETF consensus
64-127: FCFS
(section 8) |
SUN Remote Procedure Call (RPC) Numbers |
SUN RPC Numbers |
RFC1057 (?) |
IANA does not assign. Republication of values only. |
SVRLOC Extensions |
Service Extensions |
RFC2608 |
Expert review (Expert-Erik Guttman) |
SVRLOC Templates |
Service Templates |
RFC2609 |
Expert review (section 5) (Expert-Erik Guttman) |
Syslog Parameters |
Syslog Message Severities |
RFC3164 |
FCFS (?) |
Sysolg Message Facilities |
RFC3164 |
FCFS (?) |
T |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Telephony Routing over IP (TRIP) Parameters |
TRIP Address Families |
RFC3219 |
Expert review (section 13.3) |
TRIP Application Protocols |
RFC3219 |
Expert review (section 13.4) |
TRIP Attributes |
RFC3219 |
RFC or equivalent
(section 13.2) |
TRIP Capabilities |
RFC3219 |
RFC or equivalent
(section 13.1) |
TRIP IP Telephony Administrative Domain (ITAD) Numbers |
RFC3219 |
FCFS (section 13.5) |
Telnet Options |
Options |
RFC (?) |
(?) |
Sub-options |
RFC (?) |
(?) |
Terminal Type Names |
Terminal Type Names |
RFC930 (?) or RFC1091 (?) |
(?) |
Timed Efficient Stream Loss-tolerant Authentication (TESLA) Parameters |
TESLA-MAC Values |
RFC4442 |
Expert Review by the MSEC working group or its designated successor |
TESLA-PRF Values |
RFC4442 |
Expert Review by the MSEC working group or its designated successor |
Transfer Encodings |
Transfer Encoding Names |
RFC4289 |
Standards track RFC
(section 3.3) |
Transmission Control Protocol (TCP) Header Flags |
Header Flags |
RFC2780, RFC3168 |
Standards action process |
Transmission Control Protocol (TCP) Parameters |
TCP Alternate Checksum Numbers |
RFC (?) |
(?) |
TCP Option Numbers |
RFC2780 |
IESG Approval or Standards Action |
Transport Layer Security (TLS) |
Alert Registry |
RFC4346 |
Standards Action |
Cipher Suite Registry |
RFC4346 |
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 Registry |
RFC4346 |
0-63 Standards Action
64-223 Specification Required
224-255 Private Use |
Compression Method Identifiers |
RFC3749 |
0-63: Standards Action
64-223: Specification Required
224-255: Private Use |
ContentType Registry |
RFC4346 |
Standards Action |
EC Curve Type Registry |
RFC-ietf-tls-ecc-12.txt |
IETF Consensus |
EC Named Curve Registry |
RFC-ietf-tls-ecc-12.txt |
IETF Consensus |
EC Point Format Registry |
RFC-ietf-tls-ecc-12.txt |
IETF Consensus |
Extensions |
RFC4366 |
IETF Consensus |
HandshakeType Registry |
RFC4346 |
Standards Action |
Hash Types |
[RFC-housley-tls-authz-extns-07.txt] |
0-158 (Standard Action)
159-223 (Specification Required)
224-255 reserved for RFC 2434 Private Use
|
TLS Authorization Data Formats |
[RFC-housley-tls-authz-extns-07.txt] |
0-63 (Standard Action)
64-223 (Specification Required)
224-255 reserved for RFC 2434 Private Use
|
TLS Supplemental Data Formats (SupplementalDataType) |
RFC-santesson-tls-supp-02.txt |
0-16385 Standards Action,
16386-65279 IETF Consensus,
65280-65535 Private Use |
TLS UserMappingType Values |
RFC-santesson-tls-ume-07.txt |
0-63 Standards Action,
64-223 Specification Required,
224-255 Private Use |
TSIG Algorithm Names |
Algorithm Names |
RFC2845 |
IETF consensus policy
(section 7) |
U |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
Undirectional Lightweight Encapsulation (ULE) |
Next-Header Registry |
RFC4326 |
0-255: Expert review leading to IETF RFC (Expert - ?) |
Uniform Resource Identifier (URI) Schemes |
URI Schemes |
RFC4395 |
Expert Review (Graham Klyne) |
Uniform Resource Names (URN) |
Formal Namespaces |
RFC3406 |
IETF consensus action |
Informal Namespace Templates |
RFC3406 |
|
Informal Namespaces |
RFC3406 |
Two week review period on
urn-nid discussion list (expert-Leslie Daigle), then FCFS |
V |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
VCDIFF Secondary Compressor ID Values |
VCDIFF Secondary Compressor ID Values |
RFC3284 |
RFC or peer-reviewed permanent and readily available reference. Subject to the above, name assignments are FCFS.
(section 15) |
Version Numbers |
Version Numbers |
RFC2780 (section 3) (?) |
IETF standards action |
Version Symbols Used Within the Integrated Services User Port (ISUP) and QSIG |
Application/ISUP Symbols |
RFC3204 |
Expert review (section 6)
(experts - Primary: Jon Peterson, Secondary: Mark Watson) |
Application/QSIG Symbols |
RFC3204 |
Expert review (section 6)
(experts - Primary: Jon Peterson, Secondary: Mark Watson) |
W |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
WAVE and AVI Codec Registries |
WAVE and AVI Codes Registries (Historic Registry) |
RFC2361 |
IANA does not assign. Republication of values.
(section 3) |
X |
Related Registry |
Defining RFC |
Registration/Assignment Procedures |
X.25 Type Numbers |
X.25 Type Numbers |
Not defined by an RFC |
IANA does not assign. Republication of values only. |
Xerox Network System (XNS) Protocol Types |
Assigned Internet Packet Types |
Not defined by an RFC |
IANA does not assign.
Republication of values only. |
Assigned Well-Known Socket Numbers |
Not defined by an RFC |
IANA does not assign. Republication of values only. |
XML - Extensible Markup Language |
IETF XML Registry |
RFC3688 |
First Come First Serve, with Specification Required |