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/Registry	Defining Document/Comments
Ad Hoc On Demand Distance Vector (AODV)
AODV Message Types	RFC 3561 Standards action. (section 12)
Extension Type	RFC 3561 Standards action. (section 12)
Address Family Numbers
Address Family Numbers	RFC 2453, RFC 2858 25-16383: Standards Action with Early Assignment 16384-32767: FCFS 32768-65535: Reserved
Address Resolution Protocol (ARP) Parameters
Hardware Types	RFC 826 (?)
Inverse Address Resolution Protocol Operation Codes	RFC 826 (?)
Protocol Type	RFC 826 See the following registry: http://www.iana.org/assignments/ethernet-numbers
Applicable Exchange Core (APEX) Parameters
APEX Endpoint Applications	RFC 3340 Expert review (Appendix B)
APEX Options	RFC 3340 Expert review (Appendix B)
APEX Services	RFC 3340 Expert review (Appendix B)
Application Access Protocol (ACAP) Parameters
ACAP Capabilities	RFC 2244 Recommended working group review (section 7.1)
ACAP Response Codes	RFC 2244 Recommended working group review (section 7.2)
Dataset Classes	RFC 2244 RFC (standards track or experimental) (section 7.3)
Vendor Subtree	RFC 2244 FCFS (section 7.4)
Atom Link Relations
Atom Link Relations	RFC 4287 IESG Approval (via request to IANA)
Authenticated Encryption with Associated Data (AEAD) Parameters
AEAD Algorithms	RFC 5116 1-32767: Specification Required. 32768-65535: Private Use.
Authentication and Key Agreement (AKA)
Version Namespace	RFC 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 IDs	RFC 3588 0-16777215 - Standards Track 16777216-4294967294 - Vendor-Specific (First Come First Served) (section 11.3)
AVP Codes	RFC 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 Value	RFC 3588 Standards Action Process (section 11.1.2)
AVP Specific Values	RFC 3588 IETF consensus (section 11.4)
Command Codes	RFC 3588 314-16,777,213 Unallocated (IETF Consensus) (section 11.2.1)
Command Flags	RFC 3588 0-7: Standards Action (section 11.2.2)
Automatic Responses to Electronic Mail Parameters
Auto-Submitted header field keywords	RFC 3834 IETF Consensus
Auto-Submitted header field optional parameters	RFC 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 Subregistry	RFC 4582 Standards-Track RFC
Error Code Subregistry	RFC 4582 Standards-Track RFC
Primitive Subregistry	RFC 4582 Standards-Track RFC
Request Status Subregistry	RFC 4582 Standards-Track RFC
Blocks Extensible Exchange Protocol (BEEP) Parameters
BEEP Features	RFC 3080 Expert review (Appendix B) (Expert-Marshall T. Rose)
BEEP Profiles	RFC 3080 Expert review (Appendix B) (Expert-Marshall T. Rose)
Border Gateway Protocol (BGP) Parameters
BGP Cease NOTIFICATION message subcodes	RFC 4486 Standards Action or Early IANA Allocation process
BGP Data Collection Standard Communities	RFC 4384 IETF Consensus [usually through the Global Routing Operations Working Group (grow)]
BGP Error Codes	RFC 4271 Standards Action or Early IANA Allocation process
BGP Error Subcodes	RFC 4271 Standards Action or Early IANA Allocation process
BGP Extended Communities Types	RFC 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 Types	RFC 4271 Standards Action or Early IANA Allocation process
BGP Outbound Route Filtering (ORF) Types	Internet Draft draft-ietf-idr-route-filter-17 0-63: Standards Action or the Early Allocation process defined in [RFC4020]. 64-127: First Come First Served. 128-255: Reserved for Vendor-Specific.
BGP Path Attributes	RFC 4271 Standards Action or Early IANA Allocation process
Capability Codes	RFC 3392 Values 1-63: IETF consensus Values 64-127: FCFS
IPv4 Address Specific Extended Community	RFC 4360 First Come First Serve
Opaque Extended Community	RFC 4360 First Come First Serve
Two-octet AS Specific Extended Community	RFC 4360 First Come First Serve
Well-known Communities	RFC 1997 Not Defined
Building Blocks
Building Blocks	RFC 3048 RFC (specification required) (section 6)
Caller-ID Numbering Plans
Tokens	RFC 3939 Standards-track RFC
Candidate Access Router Discovery (CARD) Parameters
SEAMOBY AVP Type Registry	RFC 4065 Expert Review (Expert - James Kempf)
SEAMOBY Experimental Mobility Protocol Subtype Registry	RFC 4065 Specification Required and IESG Review
SEAMOBY Layer 2 Access Technology Identifier Registry	RFC 4065 Specification Required
CERT RR Certificate Types
Certificate Types	RFC 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).
Channel Binding Types
Channel Binding Types	RFC 5056 Expert Review (Expert: Nicolas Williams)
Character Sets
Character Sets	RFC 2978 Expert Review (Primary Expert Ned Freed and Secondary Expert Martin Duerst)
Mailing List Information	RFC 2978 Expert Review
Registration Templates	RFC 2978 Expert Review (Primary Expert Ned Freed and Secondary Expert Martin Duerst)
Common Name Resolution Protocol (CNRP) Parameters
Properties, Property Types, and Status Messages	RFC 3367 FCFS (section 10)
Common Open Policy Service (COPS) Protocol Parameters
A-Types and Sub-Types	RFC 3182 0-127: IETF consensus 128-255: Private use (section 8)
Auth_Session X-Types and Sub-Types	RFC 3520 0-127: IETF consensus 128-255: Private use (section 8)
C-Num and C-Type Values	RFC 2748 IETF consensus (section 6)
Client Types Values	RFC 2748 0x001-0x3FF: COPS extension document 0x4000-0x7FFF: Private Use 0x8000-0xFFFF: FCFS (section 6)
Error sub-codes defined for messages containing Client-type = 0	RFC 4261 IETF Consensus
Error Values	RFC 3182 0-32767: IETF consensus 32768-65535: Private use (section 8)
M-Types, Reason Sub-Codes, and Error Sub-Codes	RFC 2748 Same IANA considerations as respective client type (section 6)
P-Type	RFC 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 Codes	RFC 2748 IETF consensus (section 6)
S-Num, S-Types, and Error-Codes	RFC 3084 IETF consensus (section 9)
X-Types and Sub Types	(?)
Common Presence and Instant Messaging (CPIM)
CPIM Headers	RFC 3862 Standards Track RFC
Context Labels for Internet Messages
Internet Messages Content Types	RFC 3458 RFC (specification required) (section 8)
Context Transfer Protocol (CXTP) Parameters
SEAMOBY Context Transfer Profile Type Registry	RFC 4065 Expert Review (Expert - James Kempf)
SEAMOBY Context Transfer Protocol Authorization Token Calculation Algorithms	RFC 4065 Specification Required
Cryptographic Suites for IKEv1, IKEv2, and IPsec
Identifiers	RFC 4308 RFC and expert review (Expert - Tero Kivinen)
Cryptographically Generated Addresses (CGA) Name Space
CGA Extension Type Values	RFC 4581 Standards Action
CGA SEC	RFC 4982 Standards Action
CGA Type Tags	RFC 3972 First Come First Serve (FCFS)
Datagram Congestion Control Protocol (DCCP) Parameters
Ack Vector States	RFC 4340 Standards Track RFC
Congestion Control Identifiers	RFC 4340 IETF Consensus (IETF RFC publication)
Drop Codes	RFC 4340 Standards Track RFC
Feature Numbers	RFC 4340 IETF Consensus (IETF RFC publication)
Option Types	RFC 4340 IETF Consensus (IETF RFC publication)
Packet Types	RFC 4340 Standards Track RFC
Port Numbers	RFC 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 Numbers	RFC 4341 Standards Track RFC
Profile for DCCP Congestion Control ID 2: TCP-like Congestion Control Parameters - Option Types	RFC 4341 Standards Track RFC
Profile for DCCP Congestion Control ID 2: TCP-like Congestion Control Parameters - Reset Codes	RFC 4341 Standards Track RFC
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Feature Numbers	RFC 4342 Standards Track RFC
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Option Types	RFC 4342 Standards Track RFC
Profile for DCCP Congestion Control ID 3: TFRC Congestion Control Parameters - Reset Codes	RFC 4342 Standards Track RFC
Reset Codes	RFC 4340 IETF Consensus (IETF RFC publication)
Service Codes	RFC 4340 Specification Required or First Come First Serve
Delegation Signer Resource Record
Digest Algorithms	RFC 3658 Standards Action
Delivery Status Notification (DSN) Types
address-types, diagnostic-types, MTA-name-types	RFC 3464 RFC Required
Diameter
AAA Parameters	RFC 3588 See AAA-Parameters
Differentiated Services Field Codepoints
Pools	RFC 2474 Pool 1: Standards Action Pool 2: Experimental or local use/standardized assignments if Pool 1 exhausted (section 6)
Directory System Names
Directory System Names	RFC 4520 Registry Closed
DNS Header Flags and EDNS Header Flags
DNS Header Flags	RFC 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 Flags	RFC 2671 Extended Label Type or Version Number: IESG approval Option Code: RFC (section 7)
DNSSEC NSEC3 Parameters
DNSSEC NSEC3 Flags	RFC 5155 Standards Action
DNSSEC NSEC3 Hash Algorithms	RFC 5155 Standards Action
DNSSEC NSEC3PARAM Flags	RFC 5155 Standards Action
Domain Name System (DNS)
KEY Flags	RFC 3755 Standards Action
SSHFP Resource Record Parameters	RFC 4255 IETF Consensus
Domain Name System (DNS) Key Resource Record Protocol Octet
DNS Key Resource Record Protocol Octet Values	RFC 2535 Registry now closed by RFC 3445.
Domain Name System (DNS) Parameters
DHCID RR type codes	RFC 4701 Standards Action
DNS EDNS0 Options	RFC 5001 Specification required
Domain System Class	RFC 2929 (?)
Domain System Operation Code	RFC 1035 and RFC 2929 IETF Standards Action.
Domain System Response Code	RFC (?) (?)
Resource Record (RR) Types and Q-Types	RFC 1035 and RFC 2929 IETF Consensus
Domain Name System (DNS) Security Algorithm Numbers
DNS Security Algorithm Numbers	RFC 2535 5-251: IETF standards action 253-254: Private use (section 11)
Dynamic Host Configuration Protocol (DHCP)
Algorithm Name Space Values	RFC 3118 IETF consensus (section 6)
Protocol Name Space Values	RFC 3118 IETF consensus (section 6)
RDM Name Space Values	RFC 3118 IETF consensus (section 6)
Dynamic Host Configuration Protocol (DHCP) and Bootstrap Protocol (BOOTP)
Authentication Suboption (value 8) number-spaces - Algorithm identifier values	RFC 4030 IETF Consensus
Authentication Suboption (value 8) number-spaces - RDM Algorithm identifier values	RFC 4030 IETF Consensus
BOOTP Vendor Extensions and DHCP Options	RFC 2939 IETF Consensus
CableLabs Client Configuration Option Ticket Control Mask Bit Definitions	RFC 3594 IETF Consensus (section 5)
DHCP Agent Sub-Option Codes	RFC 3046 IETF Consensus
DHCP Cablelabs Client Configuration Option Type 122 Sub-Option Codes	RFC 3495 IETF Consensus
DHCP Message Type 53 Values	RFC 2939 IETF Consensus
GeoConf Option fields - The Altitude (AT) Field	RFC 3825 Standards Action
GeoConf Option fields - The Datum field	RFC 3825 Standards Action
Network/IP Option Type 63 Sub-Option Codes	RFC 2242 ?
Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
DHCPv6 Mobile IPv6 Sub-option Codes	Internet Draft draft-ietf-mip6-hiopt-17 Standards Action or IESG Approval
DUIDs	RFC 3315 Standards Action Process (section 24.5)
Dynamic Host Configuration Protocol (DHCP) Message Types	RFC 3315 Standards Action Process (section 24.2)
Dynamic Host Configuration Protocol (DHCP) Options	RFC 3315 Standards Action Process (section 24.3)
Home Network Information Option Id-type Codes	Internet Draft draft-ietf-mip6-hiopt-17 Standards Action or IESG Approval
OPTION_LQ_QUERY option	RFC 5007 Standards Action
Status Codes	RFC 3315 Standards Action Process (section 24.4)
Dynamic Source Routing Protocol (DSR)
DSR Protocol Options	RFC 4728 Expert Review (Experts - David B. Johnson, David A. Maltz and Yih-Chun Hu)
DSR Protocol Route Error Types	RFC 4728 Expert Review (Experts - David B. Johnson, David A. Maltz and Yih-Chun Hu)
Electronic Commerce Language (ECML)
Parameter Values	RFC 4112 IESG Approval
Electronic Commerce Language Version 2 (ECMLv2)
Ecom_Payment_Card_Protocol Registry	RFC 4112 Expert Review (Expert - Donald Eastlake)
Ecom_Payment_Card_Type Registry	RFC 4112 Expert Approval (Expert - Donald Eastlake)
Ecom_Transaction_Type Registry	RFC 4112 Expert Review (Expert - Donald Eastlake)
Enterprise Numbers
Enterprise Numbers	RFC 2578 First Come First Serve. (use online template) http://pen.iana.org/pen/PenApplication.page
ENUM - Telephone Number Mapping
Enumservice Registrations	RFC 3761 Require an RFC approved by the IESG
Ethernet Numbers
Ethernet Numbers	RFC (?) (?)
Extended Master Session Key (EMSK) Parameters
EMSK PRF Numbers	Internet Draft draft-ietf-hokey-emsk-hierarchy-07 0-220: IETF Review. 221-255: Private Use.
User Specific Root Keys (USRK) Key Labels	Internet Draft draft-ietf-hokey-emsk-hierarchy-07 Specification Required
Extensible Provisioning Protocol (EPP)
EPP Repository IDs	RFC 3730 FCFS
Extensible Authentication Protocol (EAP)
EAP EXT_Type Numbers	RFC 4764 Designated Expert with Specification Required
EAP Initiate and Finish Attributes	Internet Draft draft-ietf-hokey-erx-14 IETF Consensus
EAP-AKA and EAP-SIM Parameters	RFC 4187 Specification Required
EAP-FAST Error-TLV Error-Codes	RFC 4851 Specification Required
EAP-FAST Request-Action TLV Action Codes	RFC 4851 Specification Required
EAP-FAST TLV Types	RFC 4851 Specification Required
EAP-IKEv2 Payloads	RFC 5106 Expert Review
EAP-PAX ADE Type Namespace	RFC 4746 IESG Expert via EAP WG mailing list
EAP-PAX DH Group ID Namespace	RFC 4746 IESG Expert via EAP WG mailing list
EAP-PAX MAC ID Namespace	RFC 4746 IESG Expert via EAP WG mailing list
EAP-PAX Public Key ID Namespace	RFC 4746 IESG Expert via EAP WG mailing list
EAP-POTP Cryptographic Algorithm Identifiers	RFC 4793 Specification Required and IESG Approval
EAP-SAKE messages	RFC 4763 IETF Consensus with Specification Required
EAP-SAKE non-skippable attributes	RFC 4763 IETF Consensus with Specification Required
EAP-SAKE skippable attributes	RFC 4763 IETF Consensus with Specification Required
EAP-TTLS AVP Usage	Internet Draft draft-funk-eap-ttls-v0-05 IETF Consensus
Message Types	Internet Draft draft-ietf-hokey-erx-14 IETF Consensus
Method Types	RFC 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 Codes	RFC 3748 Standards Action
Re-authentication Cryptosuites	Internet Draft draft-ietf-hokey-erx-14 IETF Consensus
Fibre Channel (FC)
Port Types	RFC 4044 Standard Range: 1-9999 Expert Review and Specification Required (Expert - Claudio DeSanti); Private Use: 10000-99999
Foobar AF Numbers
Foobar AF Numbers	RFC 1639 IANA assignment (section 2)
FTP parameters
OS specific FTP parameters	RFC 3659 See Specific Parameters under Operating System Names
Generalized Multi-Protocol Label Switching (GMPLS) Signaling Parameters
Actions	RFC 3471 IETF Consensus action or documented in a specification (section 12)
Administrative Status Information Flags	RFC 4783 IETF Standards Action RFC
Association Type	RFC 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 Types	RFC 3471 IETF Consensus action or documented in a specification (section 12)
LSP Encoding Types	RFC 3471 0-239 IETF Standards Track RFC 240-255 Assigned temporarily for Experimental Usage (Not registered with IANA)
Switching Types	RFC 3471 0-255 IETF Standards Track RFC
Generic Routing Encapsulation (GRE) Parameters
GRE Protocol Types	RFC 2784 IANA does not assign
GRE Version Numbers	RFC 2784 IETF Consensus
Generic Security Service Application Program Interface (GSSAPI) Service Names
GSSAPI/Kerberos/SASL Service Names	RFC 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 Object	RFC 4119 First Come First Serve
XML Namespaces for 'provided-by' elements for use with PIDF-LO objects	RFC 4119 Expert Review (Allison Mankin-Primary, Jon Peterson-Secondary)
Geopriv Location Type Registries
CAtypes	RFC 4776 Specification Required, Expert Review (Martin Thomson)
Location Type Registry	RFC 4589 Expert Review (Martin Thomson) Section 5.1
Location Type Registry XML	RFC 4589 Expert Review (Martin Thomson) Section 5.1
Global Switch Management Protocol version 3 (GSMPv3) Parameters
GSMPv3 Adaptation Type Name Space	RFC 3292 0x000-0x2FF: IETF consensus 0x300-0xFFF: FCFS (section B5)
GSMPv3 Event Flag Type Name Space	RFC 3292 Expert Review (Experts - Stefaan De Cnodder and Avri Doria)
GSMPv3 Failure Response Message Name Space	RFC 3292 0-59, 80-127, 160-255: IETF consensus 60-79, 128-159: Reserved for vendor private use (section B4)
GSMPv3 Label Type Name Space	RFC 3292 0x000-0xAFF: IETF consensus 0xB00-0xEFF: RFC 0xF00-0xFFF: Reserved for vendor private use (section B2)
GSMPv3 Message Type Name Space	RFC 3292 0-99: IETF consensus 100-199: RFC 200-249: RFC 250-255: Reserved for vendor private use (section B1)
GSMPv3 Model Type Name Space	RFC 3292 0: IETF consensus 1-200: RFC 201-255: Reserved for vendor private use (B6)
GSMPv3 Port Type Name Space	RFC 3292 0-127: IETF consensus 128-255: RFC (section B7)
GSMPv3 Result Type Name Space	RFC 3292 Expert review (Experts - Stefaan De Cnodder and Avri Doria)
GSMPv3 Service ID Type Name Space	RFC 3292 0-1023: IETF consensus 1024-65535: RFC (section B8)
GSMPv3 Traffic Control Type Name Space	RFC 3292 Expert Review (Experts - Stefaan De Cnodder and Avri Doria)
Global Switched Telephone Network (GSTN) Extensions
Qual2-Label	RFC 2846 (?)
Qualif-Type 1	RFC 2846, RFC 3191 RFC (section ?)
Service Selector	RFC 2846 and 3191 RFC (section ?)
Group Domain of Interpretation (GDOI)
Payload Type Values	RFC 3547 Standards Action
Hash Function Textual Names
Hash Function Names	RFC 4572 Standards-track RFCs which update or obsolete [RFC3279]
Host Identity Protocol (HIP) Parameters
DI-Types	RFC 5201 IETF Consensus
Group IDs	RFC 5201 IETF Consensus
HIP Version	RFC 5201 IETF Consensus
Notify Message Types	RFC 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 Types	RFC 5201 IETF Consensus
Parameter Types	RFC 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 Types	RFC 5203 0-200: IETF Consensus. 201-255: Private Use.
Registration Types	RFC 5203 0-200: IETF Consensus. 201-255: Private Use.
Suite IDs	RFC 5201 IETF Consensus
Hypertext Transfer Protocol (HTTP) Digest Algorithm Values
HTTP Digest Algorithm Values	RFC 3230 Specification Required
Hypertext Transfer Protocol (HTTP) Parameters
Content-Coding Values	RFC 2616 First Come First Serve with specification recommended
Transfer-Coding Values	RFC 2616 First Come First Serve with specification recommended
Hypertext Transfer Protocol (HTTP) Status Codes
HTTP Status Codes	RFC 2817 RFC and FCFS (section 10.2)
Hypertext Transfer Protocol (HTTP) Upgrade Tokens
HTTP Upgrade Tokens	RFC 2817 FCFS (must follow rules set forth in BCP 26) (section 7)
IANA Maintained MIBs
IANA Address Family Numbers MIB	(?)
IANA Charset MIB	RFC 3808 See Character Sets
IANA Finisher MIB	RFC 3806 (?)
IANA GMPLS TC MIB	RFC 4802 See individual GMPLS registry procedures
IANA ifTypes MIB	RFC 2863 Expert Review (Experts - Dan Romascanu and Keith McCloghrie)
IANA IP Route Protocol MIB	RFC 2932 RFC or expert review (Expert - Dave Thaler)
IANA IPPM Metrics Registry MIB	RFC 4148 Specification Required
IANA ITU Alarm TC MIB	RFC 3877 (?)
IANA Language MIB Definitions	RFC 3165 Expert Review (Experts - Juergen Schoenwaelder and David Levi)
IANA MALLOC MIB	RFC 3559 RFC or designated expert review. (section 4) (Expert - Dave Thaler)
IANA MAU MIB	RFC 4836 Operations and Management Area Director (Dan Romascanu); 'hubmib' working group chair (Bert Wijnen)
IANA Printer MIB	RFC 3805 (?)
IANA Tn3270eTC MIB	RFC 2561 Working Group Review (see DESCRIPTION clause associated with the MODULE-IDENTITY statement)
IEEE 802 Numbers
IEEE 802 Numbers	N/A Assigned by IEEE standards office
IETF Protocol Parameter Identifiers
IETF URN Sub-namespace for Registered Protocol Parameters	RFC 3553 IETF Consensus
Instance Manipulation Values
Instance Manipulation Values	RFC 3229 (?)
Instant Messaging SRV Protocol
Label Registry	RFC 3861 Specification Required
Integrated Service Parameters
Compression Hints	RFC 3006 IETF Consensus
Parameter Names	RFC 2216 1-127: Parameters defined in RFC 2215 128-254: Parameters defined by author of service specification document (Service and Data Element Naming)
Service Names	RFC 2216 2-127: RFC 127 and above: Experimental use (Service and Data Element Naming)
Internationalized Domain Names (IDN)
IANA Repository of TLD IDN Practices	RFC 3743 See http://www.iana.org/assignments/idn/
Internet Application Protocol
Collation Registry	RFC 4790 Expert review via mailing list (Expert - Arnt Gulbrandsen)
Internet Control Message Protocol (ICMP) Parameters
"Code" Fields	RFC (?) (?)
ICMP Extension Objects Classes	RFC 4950 0-246 First Come First Serve 247-255 Private Use
ICMP Type Numbers	RFC 2939 (?) RFC (section 7)
Internet Control Message Protocol version 6 (ICMPv6) Parameters
"Code" Fields	RFC 4443 Standards action or IESG approval
FMIPv6 Message Types	Internet Draft draft-ietf-mipshop-fmipv6-rfc4068bis-07.tx RFC Required
IPv6 Neighbor Discovery Option Formats	RFC 2463 (?) (?)
IPv6 Type Numbers	RFC 4443 IETF RFC Publication
Qtypes	RFC 4620 IETF Consensus
Internet Group Management Protocol (IGMP) Type Numbers
"Code" Fields	RFC 3228 IESG approval or standards action (section 2)
IGMP Type Numbers	RFC 3228 IESG approval or standards action (section 2)
Internet Key Exchange (IKE) Attributes
IKE Attributes	RFC 2409 RFC (standards track) (section 11.1)
Internet Key Exchange Version 2 (IKEv2) Parameters
Authentication Methods	RFC 4306 Expert Review (Expert-Tero Kivinen)
Certificate Encodings	RFC 4306 Expert Review (Expert-Tero Kivinen)
Configuration Payload Attribute Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Configuration Payload CFG Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Diffie-Hellmann Transform Ids	RFC 4306 Expert Review (Expert-Tero Kivinen)
Encryption Transform IDs	RFC 4306 Expert Review (Expert-Tero Kivinen)
Exchange Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Identification Payload ID Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Integrity Algorithm Transform IDs	RFC 4306 Expert Review (Expert-Tero Kivinen)
Notification IPCOMP Transform IDs	RFC 4306 Expert Review (Expert-Tero Kivinen)
Notify Message Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Payload Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Pseudo-random Function Transform IDs	RFC 4306 Expert Review (Expert-Tero Kivinen)
Security Protocol Identifiers	RFC 4306 Expert Review (Expert-Tero Kivinen)
Traffic Selector Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Transform Attribute Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Transform Types	RFC 4306 Expert Review (Expert-Tero Kivinen)
Internet Message Access Protocol (IMAP) 4 Capabilities
IMAP 4 Capabilities	RFC 3501 IETF Consensus
IMAP Threading Algorithms	RFC 5256 Standards Track or IESG-Approved Experimental RFC
IMAP4 List Extended	RFC 5258 IANA approval Template is at [RFC5258] section 9.3
URLAUTH Authorization Mechanism Registry	RFC 4467 Standards Track or IESG approved experimental RFC
Internet Open Trading Protocol (IOTP) Codes
IOTP Codes	RFC 2801 (?) (Expert-David Burdett)
Internet Printing Protocol (IPP) Registrations
Attribute Group Tags	RFC 2911 Expert review/assignment (Expert-Carl Uno Manros)
Attribute Syntaxes	RFC 2911 Expert review/assignment (section 6.3) (Expert-Carl Uno Manros)
Enum Attribute Values	RFC 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 Values	RFC 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)
Operations	RFC 2911 RFC (standards track) and expert review/assignment (section 6.4) (Expert-Carl Uno Manros)
Out-of-Band Attribute Group Tags	RFC 2911 Expert review/assignment (section 6.6) (Expert-Carl Uno Manros)
Status Codes	RFC 2911 Expert review/assignment (section 6.6) (Expert-Carl Uno Manros)
Internet Protocol (IP) Option Numbers
IP Option Numbers	RFC 2780 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	RFC 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 Octet	RFC 3168 RFC (section 23)
Internet Protocol version 6 (IPv6) Address Space
IPv6 Address Space	RFC 2373 Defined and Registered by the IANA.
Internet Protocol version 6 (IPv6) Anycast Address Allocations
IPv6 Anycast Address Allocations	RFC 2373 (?)
Internet Protocol version 6 (IPv6) Global Unicast Allocations
IANA IPv6 Special Purpose Address Registry	RFC 4773 IETF Consensus
IPv6 Global Unicast Allocations	RFC 2928 Contact IANA for information.
Internet Protocol Version 6 (IPv6) Low Power Personal Area Network Parameters
Dispatch Type Field	RFC 4944 Specification Required
Short Address Fields	RFC 4944 Specification Required
Internet Protocol version 6 (IPv6) Multicast Address Allocations
Address Allocations	RFC 3307 Expert Review (Expert-Marshall Eubanks)
Internet Protocol version 6 (IPv6) Parameters
IPv6 Parameters	RFC (?) (?)
Internet Protocol version 6 (IPv6) Router Alert Option Values
IPv6 Router Alert Option Values	RFC 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 Identifiers	RFC (?) (?)
Signature Encoding Algorithm Values	RFC 4359 Standards Action
Internet Storage Name Service (iSNS)
Block Storage Protocols	RFC 4171 Expert Review (by IPS WG Chair or designated expert - David Black)
Standard iSNS Attributes	RFC 4171 IETF Consensus
Internet/Xerox Network System (XNS) Protocol Mappings
Internet/XNS Protocol Mappings	RFC 1764 (?)
Intrusion Detection Exchange Protocol (IDXP)
Options	RFC 4767 Expert Review (Expert - Ben Feinstein)
Intrusion Detection Message Exchange Format (IDMEF) Parameters
Attribute Values	RFC 4765 Specification Required by RFC
Class Names and Attribute Names	RFC 4765 IETF Consensus
IP Flow Information Export (IPFIX)
IPFIX Information Elements	RFC 5102 Expert Review (Primary expert - Nevil Brownlee and Secondary expert - Juergen Quittek)
IPFIX MPLS label type	RFC 5102 Expert Review (Primary expert - Nevil Brownlee and Secondary expert - Juergen Quittek)
IPFIX Set IDs	RFC 5101 Standards Action
IPFIX Version Numbers	RFC 5101 Standards Action
IPS Protocol
Protocol Number field	RFC 3643 Standards Track RFCs approved by the IESG
IPSec
asn1-modules	RFC 4301 Specification Required
IPsec Resource Record Parameters
Algorithm Type Field	RFC 4025 IETF Consensus
Gateway Type Field	RFC 4025 Standards Action
IPv6 Multicast Permanent Group Identifiers
Group Identifier Values	RFC 3307 Expert Review (Expert - Marshall Eubanks)
Robust Header Compression (ROHC) Configuration Option Suboption Identifier Values	(?)
IS-IS
Bandwidth Constraints Model Identifiers	RFC 4124 0-239: Specification Required. 240-255: Private Use.
IS-IS Multi-Topology ID Values	RFC 5120 0-3995: Expert Review. 3996-4095: Private Use.
TLV Codepoints	RFC 3563 Expert review. (section 3.3.1) (Expert-ISIS WG chairs)
iSCSI
iSCSI authenication methods registry	RFC 3720
iSCSI digests registry	RFC 3720
iSCSI extended key registry	RFC 3720
SRP_GROUP key values	RFC 3720
Kerberized Internet Negotiation of Keys (KINK)
Error Codes	RFC 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 Types	RFC 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 Types	RFC 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 Numbers	RFC 3961 See: RFC3961 (expert-Ken Raeburn)
Encryption Type Numbers	RFC 3961 See: RFC3961 (expert-Ken Raeburn)
Kerberos TCP Extensions	RFC 5021 IESG Approval or Standards Action
Label Distribution Protocol (LDP) Name Spaces
Experiment ID Name Space	RFC 3036 0x00000000 - 0xefffffff: FCFS 0xf0000000 - 0xffffffff: Private use (section 4.5)
Forwarding Equivalence Class (FEC) Type Name Space	RFC 3036 0-127: IETF consensus 128-191: FCFS 192-255: Private use (section 4.3)
Message Type Name Space	RFC 3036 0x0000-0x3DFF: IETF consensus 0x3E00-0x3EFF: Vendor private use 0x3F00-0x3EFF: Experimental use (section 4.1)
Status Code Name Space	RFC 3036 0x00000000-0x1FFFFFFF: IETF consensus 0x20000000 - 0x3EFFFFFF: FCFS 0x3F000000 - 0x3FFFFFFF: Private Use (section 4.4)
Table, Length, and Value (TLV) Type Name Space	RFC 3036 0x0000-0x3DFF: IETF consensus 0x3E00-0x3EFFF: Vendor private use 0x3F00-0x3EFF: Experimental use (section 4.1)
Language Tags
Language Subtag Registry	RFC 4646 Expert Review (Experts - Michael Everson and Doug Ewell)
Language Subtag Registry - Registration Templates	RFC 4646 These are the Registration Templates only.
Language Tag Extensions Registry	RFC 4646 IESG Approval
Language Tags - OBSOLETE	RFC 4646 No further registrations in this registry.
Language Tags Directory - OBSOLETE	RFC 4646 No further registrations in this registry.
Layer Two Tunneling Protocol (L2TP) Parameters
ATM Alarm Status AVP (Attribute Type 88) Values	RFC 4454 Circuit Status Reason values for the SLI message - Expert Review General ATM Alarm failures - Expert Review
ATM-Specific Sublayer bits	RFC 4454 IETF Consensus
Control Message AVP's	RFC 3438 Expert review (section 2.1) Carlos Pignataro (primary) Ron Da Silva (secondary) Ignacio Goyret (secondary)
Message Type AVP Values	RFC 3438 Expert Review (section 2.2) Carlos Pignataro (primary) Ron Da Silva (secondary) Ignacio Goyret (secondary)
Remaining Values	RFC 3438 Expert review (section 2.4) Carlos Pignataro (primary) Ron Da Silva (secondary) Ignacio Goyret (secondary)
Result Code AVP Values	RFC 3438 Expert review (section 2.3)Carlos Pignataro (primary) Ron Da Silva (secondary) Ignacio Goyret (secondary)
Licklider Transmission Protocol (LTP) Parameters
LTP Ciphersuites	Internet Draft draft-irtf-dtnrg-ltp-extensions-08 Specification Required
LTP Extension Tags	Internet Draft draft-irtf-dtnrg-ltp-10 Specification Required
Lightweight Directory Access Protocol (LDAP)
Attribute Description Options	RFC 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 Method	RFC 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 prefixes	RFC 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 Choices	RFC 4520 Standards Action
LDAP ModifyRequest Operations	RFC 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 Scopes	RFC 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 Syntaxes	RFC 4520 First Come First Serve with Specification Required
LDAPMessage types	RFC 4520 Standards Action
Object Identifier Descriptors	RFC 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 Descriptors	RFC 3703 (tbd)
Protocol Mechanisms	RFC 4520 First Come First Serve
Result Code values	RFC 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 Types	RFC 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)
Location-to-Service Translation (LoST)
LoST Location Profile Registry	Internet Draft draft-ietf-ecrit-lost-10 Standards Action
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 2183 (?)
Mail Content Dispositon Parameters	RFC 2183 (?)
Mail Parameters
Address Literal Tags	RFC 2821 Standards Action
Diagnostic Types	RFC 1891 (?)
Mail Address Types	(?)
Mail Encoding Header Field Keywords	RFC 1505 Specification Required
Mail Encryption Types	(?)
Mail Service Types	RFC (?) (?)
Mail System Names	(?)
Mail Transmission Types	RFC 822 (?) (?)
MTA Name Types	RFC 1891 (?)
SMTP Service Extensions	RFC 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-tree	RFC 2506 Expert Review (Expert - Larry Masinter)
features.ietf-tree	RFC 2506 IETF Consensus
features.sip-tree	RFC 3840 IETF Consensus
features.uri-tree	RFC 2506 Unregistered (formed from uri)
Media Gateway Control Protocol (MGCP)
List of Extension Digit Map Letters	RFC 3435 Expert review (section C.1) (Expert-Brian Rosen)
LocalConnectionsOptions Sub-Registry	RFC 3435 Expert review (section C.3) (Expert-Brian Rosen)
MGCP Package Sub-Registry	RFC 3435 Expert review (section C.1) (Expert-Brian Rosen)
Megaco/H.248 Packages
Error Codes	RFC 5125 Expert review or IETF consensus (Expert-Tom PT Taylor)
Private Packages	RFC 5125 Expert review or IETF consensus (Expert-Tom PT Taylor)
Profile Names	RFC 5125 Expert review or IETF consensus (Expert-Tom PT Taylor)
Public Packages	RFC 5125 Expert review or IETF consensus (Expert-Tom PT Taylor)
Service Change Reasons	RFC 5125 Expert review or IETF consensus (Expert-Tom PT Taylor)
Message Disposition Notification (MDN) Parameters
MDN-Disposition-Modifier-Names	RFC 3798 (?)
MDN-Dispositon-Notification-Option Names	RFC 3798 (?)
MDN-Extension-Field-Names	RFC 3798 (?)
Message Header Fields
Permanent Message Header Fields	RFC 3864 Expert Review (Graham Klyne)
Provisional Message Header Fields	RFC 3864 Expert Review (Graham Klyne)
Message Session Relay Protocol (MSRP) Parameters
Header Fields	RFC 4975 RFC Publication
Methods	RFC 4975 RFC Publication
Status Codes	RFC 4975 RFC Publication
Message Tracking Query Protocol (MTQP)
Options	RFC 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 Parameters	RFC (?) (?)
Mobile Internet Protocol (IP) Numbers
Code Values	RFC 3344 Expert review (Phil Roberts)
Code Values for Mobile IP Handoff Reply Messages	RFC 4881 IETF Consensus
Dynamic HA Extension subtypes	RFC 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 Subtypes	RFC 4881 IETF Consensus
Mobile Network Acknowledgement Extension	RFC 5177 Standards Action or IESG Approval
User Datagram Protocol (UDP) Tunnel Reply Extension: Subtype	RFC 3519 Expert review. Also specification required. (section 8) (Expert-Phil Roberts)
User Datagram Protocol (UDP) Tunnel Request Extension: Subtype	RFC 3519 Expert review. Also specification required. (section 8) (Expert-Phil Roberts)
Mobile IPv6
Access Technology Type Option type values	Internet Draft draft-ietf-netlmm-proxymip6-18 Expert Review (Expert - Sri Gundavelli)
Binding Acknowledgment Flags	Internet Draft draft-ietf-netlmm-proxymip6-18 Standards Action or IESG Approval
Binding Update Flags	Internet Draft draft-ietf-netlmm-proxymip6-18 Standards Action or IESG Approval
Enumerating Algorithms	RFC 4285 IETF Consensus
Handoff Indicator Option type values	Internet Draft draft-ietf-netlmm-proxymip6-18 Expert Review (Expert - Sri Gundavelli)
Mobile Node Identifier Option Subtypes	RFC 4283 Standards Action
Mobility Header Types	RFC 3775 Standards Action or IESG Approval
Mobility Options	RFC 3775 Standards Action or IESG Approval
Status Codes	RFC 3775 Standards Action or IESG Approval
Subtype field of the MN-HA and MN-AAA authentication mobility options	RFC 4285 IETF Consensus
Multicast Address (IPv4)
Address Assignments/Allocations	RFC 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 Codes	RFC 2730 IETF consensus (section 5)
MADCAP Feature Codes	RFC 2730 IETF consensus (section 5)
MADCAP Lease Identifier Types	RFC 2730 IETF consensus
MADCAP Message Types	RFC 2730 IETF consensus
MADCAP Options	RFC 2730 IETF consensus (section 5)
Multicast Address-Set Claim (MASC) Protocol Parameters
Message Types	RFC 2909 IETF consensus (section 15)
NOTIFICATION Message Error Codes and Subcodes	RFC 2909 IETF consensus (section 15)
OPEN Message Optional Parameter Types	RFC 2909 IETF consensus (section 15)
UPDATE Message Attribute Types	RFC 2909 IETF consensus (section 15)
UPDATE Message Optional Parameter Types	RFC 2909 IETF consensus (section 15)
Multicast Source Discovery Protocol (MSDP)
TLV Values	RFC 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 Types	RFC 4563 0-240 IETF Consensus, 241-255 Private Use
Payload Name Spaces	RFC 3830 0-240: IETF Consensus 241-255: Private Use Unless stated otherwise in Registry
Multiprotocol Label Switching Architecture (MPLS)
Identifiers	RFC 3033 IETF consensus
Label Switched Paths (LSPs) Parameters - Message Types	RFC 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 Modes	RFC 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 Codes	RFC 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 - TLVs	RFC 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 Values	RFC 3032 IETF consensus
Multipurpose Internet Mail Extensions (MIME)
Access-Types	RFC 4289 Multiple registration procedures. See section 2 of RFC4289
Event code registry for audio/telephone-event	RFC 4733 Specification Required and Expert Review (Expert - Tom Taylor)
Media Type Parameters	(?)
Media Type Sub-Parameters	RFC 3640 (?)
Media Types	RFC 4288, RFC 4855 Expert Review (Ned Freed)
Sub-parameter registry for application/mbox	RFC 4155 Specification Required
Sub-Parameter registry for audio/rtp-midi	RFC 4695 IETF Standards-Track Document or Specification Required (see individual sub-registries)
Sub-Parameter registry for mode=rtp-midi of audio/mpeg4-generic	RFC 4695 IETF Standards-Track Document or Specification Required (see individual sub-registries)
Sub-parameter registry for video/raw	RFC 4175 Specification Required (Values for the sampling and colorimetry parameters)
text/directory MIME Parameters	RFC 2425 Two week comment period, Expert review (Paul Hoffman)
text/directory MIME Profiles	RFC 2425 Two week comment period, expert review (Paul Hoffman)
text/directory MIME Types	RFC 2425 Two week comment period, Expert review (Paul Hoffman)
Namespace for IP Over IEEE 1394
Multicast Channel Allocation Protocol (MCAP) Parameters	RFC 2734 (?)
Values Registered for the Unit_SW_Version	RFC 2734 IANA allocation (section 10)
Network Configuration Protocol (NETCONF)
Capability URNs	RFC 4741 IETF Standards Action
Network File System version 4 (NFSv4) Named Attributes
Named Attributes	RFC 3530 Informational RFC (section 17.1)
Network News Transfer Protocol (NNTP)
Network News Transfer Protocol (NNTP) Parameters	RFC 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 Types	RFC 2332 Expert or area director review with documentation (section 9) (Expert-Jim Luciani)
Packet Types	RFC 2332 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
One Time Password Parameters
Algorithm Identifier	RFC 2289 (?)
Extension Set ID	RFC 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 Codes	RFC 1583 (?) (?)
Bandwidth Constraints Model Identifiers	RFC 4124 0-239 Specification Required 240-255 Private Use
Link Local Signalling TLV Identifiers (LLS Types)	RFC 4813 IETF Consensus
LLS Type 1 Extended Options	RFC 4813 IETF Consensus
Opaque Link-State Advertisements (LSA) Option Types	Internet Draft draft-ietf-ospf-rfc2370bis-05 0-127: IETF Consensus. 128-255: Reserved for Private Use.
OSPF Multi-Topology Routing	RFC 4915 3-31: IETF consensus
Signature Algorithms	RFC (?) (?)
Traffic Engineering TLVs	RFC 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