2008-08-01 2024-12-20 Dan Wing 0x000-0x07F IETF Review 0x080-0x0FF Expert Review 0x000 Reserved 0x001 Binding 0x002 Reserved; was SharedSecret prior to 0x003 Allocate 0x004 Refresh 0x005 Unassigned 0x006 Send 0x007 Data 0x008 CreatePermission 0x009 ChannelBind 0x00A Connect 0x00B ConnectionBind 0x00C ConnectionAttempt 0x00D-0x07F Unassigned 0x080 GOOG-PING 0x081-0x0FF Unassigned 0x100-0xFFF Reserved (For DTLS-SRTP multiplexing collision avoidance, see . Cannot be made available for assignment without IETF Review.) Dan Wing 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 0x0000 Reserved 0x0001 MAPPED-ADDRESS 0x0002 Reserved; was RESPONSE-ADDRESS prior to 0x0003 Reserved; was CHANGE-REQUEST prior to 0x0004 Reserved; was SOURCE-ADDRESS prior to 0x0005 Reserved; was CHANGED-ADDRESS prior to 0x0006 USERNAME 0x0007 Reserved; was PASSWORD prior to 0x0008 MESSAGE-INTEGRITY 0x0009 ERROR-CODE 0x000A UNKNOWN-ATTRIBUTES 0x000B Reserved; was REFLECTED-FROM prior to 0x000C CHANNEL-NUMBER 0x000D LIFETIME 0x000E-0x000F Reserved 0x0010 Reserved (was BANDWIDTH) 0x0011 Reserved 0x0012 XOR-PEER-ADDRESS 0x0013 DATA 0x0014 REALM 0x0015 NONCE 0x0016 XOR-RELAYED-ADDRESS 0x0017 REQUESTED-ADDRESS-FAMILY 0x0018 EVEN-PORT 0x0019 REQUESTED-TRANSPORT 0x001A DONT-FRAGMENT 0x001B ACCESS-TOKEN 0x001C MESSAGE-INTEGRITY-SHA256 0x001D PASSWORD-ALGORITHM 0x001E USERHASH 0x001F-0x001F Unassigned 0x0020 XOR-MAPPED-ADDRESS 0x0021 Reserved (was TIMER-VAL) 0x0022 RESERVATION-TOKEN 0x0023 Reserved 0x0024 PRIORITY 0x0025 USE-CANDIDATE 0x0026 PADDING 0x0027 RESPONSE-PORT 0x0028-0x0029 Reserved 0x002A CONNECTION-ID 0x002B-0x002F Unassigned 0x0030 Reserved 0x0031-0x7FFF Unassigned 0x8000 ADDITIONAL-ADDRESS-FAMILY 0x8001 ADDRESS-ERROR-CODE 0x8002 PASSWORD-ALGORITHMS 0x8003 ALTERNATE-DOMAIN 0x8004 ICMP 0x8005-0x8021 Unassigned 0x8022 SOFTWARE 0x8023 ALTERNATE-SERVER 0x8024 Reserved 0x8025 TRANSACTION_TRANSMIT_COUNTER 0x8026 Reserved 0x8027 CACHE-TIMEOUT 0x8028 FINGERPRINT 0x8029 ICE-CONTROLLED 0x802A ICE-CONTROLLING 0x802B RESPONSE-ORIGIN 0x802C OTHER-ADDRESS 0x802D ECN-CHECK STUN 0x802E THIRD-PARTY-AUTHORIZATION 0x802F Unassigned 0x8030 MOBILITY-TICKET 0x8031-0xBFFF Unassigned 0xC000 CISCO-STUN-FLOWDATA 0xC001 ENF-FLOW-DESCRIPTION 0xC002 ENF-NETWORK-STATUS 0xC003 CISCO-WEBEX-FLOW-INFO 0xC004-0xC055 Unassigned 0xC056 CITRIX-TRANSACTION-ID 0xC057 GOOG-NETWORK-INFO 0xC058 GOOG-LAST-ICE-CHECK-RECEIVED 0xC059 GOOG-MISC-INFO 0xC05A GOOG-OBSOLETE-1 0xC05B GOOG-CONNECTION-ID 0xC05C GOOG-DELTA 0xC05D GOOG-DELTA-ACK 0xC05E GOOG-DELTA-SYNC-REQ 0xC05F Unassigned 0xC060 GOOG-MESSAGE-INTEGRITY-32 0xC061-0xC06F Unassigned 0xC070 META-DTLS-IN-STUN 0xC071 META-DTLS-IN-STUN-ACKNOWLEDGEMENT 0xC072-0xFFFF Unassigned IETF Review 0-299 Reserved 300 Try Alternate 301-399 Unassigned 400 Bad Request 401 Unauthenticated 402 Unassigned 403 Forbidden 404 Unassigned 405 Mobility Forbidden 406-419 Unassigned 420 Unknown Attribute 421-436 Unassigned 437 Allocation Mismatch 438 Stale Nonce 439 Unassigned 440 Address Family not Supported 441 Wrong Credentials 442 Unsupported Transport Protocol 443 Peer Address Family Mismatch 444-445 Unassigned 446 Connection Already Exists 447 Connection Timeout or Failure 448-485 Unassigned 486 Allocation Quota Reached 487 Role Conflict 488-499 Unassigned 500 Server Error 501-507 Unassigned 508 Insufficient Capacity 509-699 Unassigned Standards Action Values 0x0000 through 0x3FFF are not available for use, since they conflict with the STUN header. 0x0000-0x3FFF Reserved 0x4000-0x4FFF Used by TURN 0x5000-0xFFFF Reserved (For DTLS-SRTP multiplexing collision avoidance, see ) Standards Action 0 Password algorithms 1 Username anonymity 2-23 Unassigned 0x0000-0x7FFF IETF Review 0x8000-0xFFFF Expert Review Dan Wing 0x0000 Reserved 0x0001 MD5 0x0002 SHA-256 0x0003-0xFFFF Unassigned Dan Wing mailto:danwing&gmail.com 2022-10-14 Jonas Oreland mailto:jonaso&google.com 2023-03-20 Pål-Erik Martinsen mailto:palmarti&cisco.com 2016-04-20 Paras Babbar mailto:Paras.Babbar&cloud.com 2023-12-18 Philipp Hancke mailto:phancke&meta.com 2024-12-20 Stefano Giorcelli mailto:stefanog&cisco.com 2023-12-07