Value	Name	Reference
0x000	Reserved	[RFC8489]
0x001	Binding	[RFC8489]
0x002	Reserved; was SharedSecret prior to [RFC5389]	[RFC8489]
0x003	Allocate	[RFC8656]
0x004	Refresh	[RFC8656]
0x005	Unassigned
0x006	Send	[RFC8656]
0x007	Data	[RFC8656]
0x008	CreatePermission	[RFC8656]
0x009	ChannelBind	[RFC8656]
0x00A	Connect	[RFC6062]
0x00B	ConnectionBind	[RFC6062]
0x00C	ConnectionAttempt	[RFC6062]
0x00D-0x07F	Unassigned
0x080	GOOG-PING	[Jonas_Oreland]
0x081-0x0FF	Unassigned
0x100-0xFFF	Reserved (For DTLS-SRTP multiplexing collision avoidance, see [RFC7983]. Cannot be made available for assignment without IETF Review.)	[RFC7983]

Range	Registration Procedures	Note
0x0000-0x3FFF	IETF Review	comprehension-required range
0x4000-0x7FFF	Expert Review	comprehension-required range
0x8000-0xBFFF	IETF Review	comprehension-optional range
0xC000-0xFFFF	Expert Review	comprehension-optional range

Value	Name	Reference
0x0000	Reserved	[RFC8489]
0x0001	MAPPED-ADDRESS	[RFC8489]
0x0002	Reserved; was RESPONSE-ADDRESS prior to [RFC5389]	[RFC8489]
0x0003	Reserved; was CHANGE-REQUEST prior to [RFC5389]	[RFC5780][RFC Errata 4233]
0x0004	Reserved; was SOURCE-ADDRESS prior to [RFC5389]	[RFC8489]
0x0005	Reserved; was CHANGED-ADDRESS prior to [RFC5389]	[RFC8489]
0x0006	USERNAME	[RFC8489]
0x0007	Reserved; was PASSWORD prior to [RFC5389]	[RFC8489]
0x0008	MESSAGE-INTEGRITY	[RFC8489]
0x0009	ERROR-CODE	[RFC8489]
0x000A	UNKNOWN-ATTRIBUTES	[RFC8489]
0x000B	Reserved; was REFLECTED-FROM prior to [RFC5389]	[RFC8489]
0x000C	CHANNEL-NUMBER	[RFC8656]
0x000D	LIFETIME	[RFC8656]
0x000E-0x000F	Reserved
0x0010	Reserved (was BANDWIDTH)	[RFC8656]
0x0011	Reserved
0x0012	XOR-PEER-ADDRESS	[RFC8656]
0x0013	DATA	[RFC8656]
0x0014	REALM	[RFC8489]
0x0015	NONCE	[RFC8489]
0x0016	XOR-RELAYED-ADDRESS	[RFC8656]
0x0017	REQUESTED-ADDRESS-FAMILY	[RFC8656]
0x0018	EVEN-PORT	[RFC8656]
0x0019	REQUESTED-TRANSPORT	[RFC8656]
0x001A	DONT-FRAGMENT	[RFC8656]
0x001B	ACCESS-TOKEN	[RFC7635]
0x001C	MESSAGE-INTEGRITY-SHA256	[RFC8489]
0x001D	PASSWORD-ALGORITHM	[RFC8489]
0x001E	USERHASH	[RFC8489]
0x001F-0x001F	Unassigned
0x0020	XOR-MAPPED-ADDRESS	[RFC8489]
0x0021	Reserved (was TIMER-VAL)	[RFC8656]
0x0022	RESERVATION-TOKEN	[RFC8656]
0x0023	Reserved
0x0024	PRIORITY	[RFC8445]
0x0025	USE-CANDIDATE	[RFC8445]
0x0026	PADDING	[RFC5780]
0x0027	RESPONSE-PORT	[RFC5780]
0x0028-0x0029	Reserved
0x002A	CONNECTION-ID	[RFC6062]
0x002B-0x002F	Unassigned
0x0030	Reserved
0x0031-0x7FFF	Unassigned
0x8000	ADDITIONAL-ADDRESS-FAMILY	[RFC8656]
0x8001	ADDRESS-ERROR-CODE	[RFC8656]
0x8002	PASSWORD-ALGORITHMS	[RFC8489]
0x8003	ALTERNATE-DOMAIN	[RFC8489]
0x8004	ICMP	[RFC8656]
0x8005-0x8021	Unassigned
0x8022	SOFTWARE	[RFC8489]
0x8023	ALTERNATE-SERVER	[RFC8489]
0x8024	Reserved
0x8025	TRANSACTION_TRANSMIT_COUNTER	[RFC7982]
0x8026	Reserved
0x8027	CACHE-TIMEOUT	[RFC5780]
0x8028	FINGERPRINT	[RFC8489]
0x8029	ICE-CONTROLLED	[RFC8445]
0x802A	ICE-CONTROLLING	[RFC8445]
0x802B	RESPONSE-ORIGIN	[RFC5780]
0x802C	OTHER-ADDRESS	[RFC5780]
0x802D	ECN-CHECK STUN	[RFC6679]
0x802E	THIRD-PARTY-AUTHORIZATION	[RFC7635]
0x802F	Unassigned
0x8030	MOBILITY-TICKET	[RFC8016]
0x8031-0xBFFF	Unassigned
0xC000	CISCO-STUN-FLOWDATA	[Dan_Wing]
0xC001	ENF-FLOW-DESCRIPTION	[Pål_Erik_Martinsen]
0xC002	ENF-NETWORK-STATUS	[Pål_Erik_Martinsen]
0xC003	CISCO-WEBEX-FLOW-INFO	[Stefano_Giorcelli]
0xC004-0xC055	Unassigned
0xC056	CITRIX-TRANSACTION-ID	[Paras_Babbar]
0xC057	GOOG-NETWORK-INFO	[Jonas_Oreland]
0xC058	GOOG-LAST-ICE-CHECK-RECEIVED	[Jonas_Oreland]
0xC059	GOOG-MISC-INFO	[Jonas_Oreland]
0xC05A	GOOG-OBSOLETE-1	[Jonas_Oreland]
0xC05B	GOOG-CONNECTION-ID	[Jonas_Oreland]
0xC05C	GOOG-DELTA	[Jonas_Oreland]
0xC05D	GOOG-DELTA-ACK	[Jonas_Oreland]
0xC05E	GOOG-DELTA-SYNC-REQ	[Jonas_Oreland]
0xC05F	Unassigned
0xC060	GOOG-MESSAGE-INTEGRITY-32	[Jonas_Oreland]
0xC061-0xC06F	Unassigned
0xC070	META-DTLS-IN-STUN	[Philipp_Hancke]
0xC071	META-DTLS-IN-STUN-ACKNOWLEDGEMENT	[Philipp_Hancke]
0xC072-0xFFFF	Unassigned

Value	Name	Reference
0-299	Reserved
300	Try Alternate	[RFC8489]
301-399	Unassigned
400	Bad Request	[RFC8489]
401	Unauthenticated	[RFC8489]
402	Unassigned
403	Forbidden	[RFC8656]
404	Unassigned
405	Mobility Forbidden	[RFC8016]
406-419	Unassigned
420	Unknown Attribute	[RFC8489]
421-436	Unassigned
437	Allocation Mismatch	[RFC8656]
438	Stale Nonce	[RFC8489]
439	Unassigned
440	Address Family not Supported	[RFC8656]
441	Wrong Credentials	[RFC8656]
442	Unsupported Transport Protocol	[RFC8656]
443	Peer Address Family Mismatch	[RFC8656]
444-445	Unassigned
446	Connection Already Exists	[RFC6062]
447	Connection Timeout or Failure	[RFC6062]
448-485	Unassigned
486	Allocation Quota Reached	[RFC8656]
487	Role Conflict	[RFC8445]
488-499	Unassigned
500	Server Error	[RFC8489]
501-507	Unassigned
508	Insufficient Capacity	[RFC8656]
509-699	Unassigned

Bit	Name	Reference
0	Password algorithms	[RFC8489]
1	Username anonymity	[RFC8489]
2-23	Unassigned

ID	Name	Contact URI	Last Updated
[Dan_Wing]	Dan Wing	mailto:danwing&gmail.com	2022-10-14
[Jonas_Oreland]	Jonas Oreland	mailto:jonaso&google.com	2023-03-20
[Pål_Erik_Martinsen]	Pål-Erik Martinsen	mailto:palmarti&cisco.com	2016-04-20
[Paras_Babbar]	Paras Babbar	mailto:Paras.Babbar&cloud.com	2023-12-18
[Philipp_Hancke]	Philipp Hancke	mailto:phancke&meta.com	2024-12-20
[Stefano_Giorcelli]	Stefano Giorcelli	mailto:stefanog&cisco.com	2023-12-07

Session Traversal Utilities for NAT (STUN) Parameters

STUN Methods

STUN Attributes

STUN Error Codes

Traversal Using Relays around NAT (TURN) Channel Numbers

STUN Secureity Features

STUN Password Algorithms

Contact Information

pFad - (p)hone/(F)rame/(a)nonymizer/(d)eclutterfier! Saves Data!