Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2024-03-18
Expert(s)
TCP/UDP: Joe Touch; Eliot Lear, Kumiko Ono, Wes Eddy, Brian Trammell, 
Jana Iyengar, and Michael Scharf
SCTP: Michael Tuexen
DCCP: Eddie Kohler and Yoshifumi Nishida
Reference
[RFC6335]
Note
Service names and port numbers are used to distinguish between different
services that run over transport protocols such as TCP, UDP, DCCP, and
SCTP.

Service names are assigned on a first-come, first-served process, as
documented in [RFC6335].

Port numbers are assigned in various ways, based on three ranges: System
Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private
Ports (49152-65535); the different uses of these ranges are described in
[RFC6335]. According to Section 8.1.2 of [RFC6335], System Ports are 
assigned by the "IETF Review" or "IESG Approval" procedures described in 
[RFC8126]. User Ports are assigned by IANA using the "IETF Review" process, 
the "IESG Approval" process, or the "Expert Review" process, as per 
[RFC6335]. Dynamic Ports are not assigned.

The registration procedures for service names and port numbers are
described in [RFC6335].

Assigned ports both System and User ports SHOULD NOT be used without
or prior to IANA registration.

************************************************************************
* PLEASE NOTE THE FOLLOWING:                                           *
*                                                                      *
* ASSIGNMENT OF A PORT NUMBER DOES NOT IN ANY WAY IMPLY AN             *
* ENDORSEMENT OF AN APPLICATION OR PRODUCT, AND THE FACT THAT NETWORK  *
* TRAFFIC IS FLOWING TO OR FROM A REGISTERED PORT DOES NOT MEAN THAT   *
* IT IS "GOOD" TRAFFIC, NOR THAT IT NECESSARILY CORRESPONDS TO THE     *
* ASSIGNED SERVICE. FIREWALL AND SYSTEM ADMINISTRATORS SHOULD          *
* CHOOSE HOW TO CONFIGURE THEIR SYSTEMS BASED ON THEIR KNOWLEDGE OF    *
* THE TRAFFIC IN QUESTION, NOT WHETHER THERE IS A PORT NUMBER          *
* REGISTERED OR NOT.                                                   *
************************************************************************

Request an Assignment
  [https://www.iana.org/protocols/apply]

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Service Name Port Number Transport Protocol Description Assignee Contact Registration Date Modification Date Reference Service Code Unauthorized Use Reported Assignment Notes
usp-ctr-stomp tcp USP discovery [Broadband_Forum] [Broadband_Forum] 2017-01-12 [http://www.broadband-forum.org/assignments] Defined TXT keys: see www.broadband-forum.org/assignments
usp-ctr-ws tcp USP discovery [Broadband_Forum] [Broadband_Forum] 2017-09-28 [http://www.broadband-forum.org/assignments] Defined TXT keys: see www.broadband-forum.org/assignments
vapix-http tcp Indicator for VAPIX support over HTTP [Axis_Communications] [Christian_Storm] 2023-04-18 Defined TXT keys: https://help.axis.com/en-us/axis-os#axis-bonjour-implementation
vapix-https tcp Indicator for VAPIX support over HTTPS [Axis_Communications] [Christian_Storm] 2023-04-18 Defined TXT keys: https://help.axis.com/en-us/axis-os#axis-bonjour-implementation
wdp tcp Windows Device Portal [Microsoft_Corporation_5] [Hirsch_Singhal] 2016-03-03 Defined TXT keys: D (device type), S (https port), A (architecture), T (tags)
web-xi tcp HTTP-based protocol for DAQ devices [Spectris_plc] [Carsten_Hansen] 2019-02-13 Defined TXT keys: name, version
wot tcp W3C WoT Thing Description or Directory [W3C_Web_of_Things_Working_Group] [Kazuyuki_Ashimura] 2022-11-22 2022-12-15

Defined TXT keys:

td: Absolute pathname of the Thing Description of the Thing or Thing Description of the Thing Description Directory.

type: Type of the Thing Description, i.e. "Thing" or "Directory". If omitted, the type is assumed to be Thing.

scheme: Scheme part of URL. One of the following values can be specified, with the standard registered URI interpretations [RFC7595]: http (HTTP over TCP),https (HTTP over TLS/TCP), coap+tcp (CoAP over TCP), or coaps+tcp (CoAP over TLS/TCP). If omitted, the scheme is assumed to be http.

wpl-ers-http tcp World Programming repository server [World_Programming_Limited] [Thomas_Quarendon] 2017-03-17 Defined TXT keys: None
xul-http XUL (XML User Interface Language) transported over HTTP [Eran_Gampel] [Eran_Gampel] Defined TXT keys: u=<username> p=<password> path=<path to document> (Same as for _http._tcp)
zigbee-bridge tcp ZigBee Bridge device [ZigBee_Alliances_Network_Device_working_group] [Leslie_Mulder] 2013-05-28 Defined TXT keys: see: http://www.zigbee.org/Standards/ZigBeeNetworkDevices
zigbee-bridge udp ZigBee Bridge device [ZigBee_Alliances_Network_Device_working_group] [Leslie_Mulder] 2013-05-28 Defined TXT keys: see: http://www.zigbee.org/Standards/ZigBeeNetworkDevices
zigbee-gateway tcp ZigBee IP Gateway [ZigBee_Alliances_Network_Device_working_group] [Leslie_Mulder] 2013-05-28 Defined TXT keys: see: http://www.zigbee.org/Standards/ZigBeeNetworkDevices
zigbee-gateway udp ZigBee IP Gateway [ZigBee_Alliances_Network_Device_working_group] [Leslie_Mulder] 2013-05-28 Defined TXT keys: see: http://www.zigbee.org/Standards/ZigBeeNetworkDevices

Contact Information

ID Name Organization Contact URI Last Updated
[Axis_Communications] Axis Communications mailto:christnn&axis.com 2023-04-18
[Broadband_Forum] Broadband Forum mailto:help&broadband-forum.org 2020-03-17
[Carsten_Hansen] Carsten Hansen Spectris plc mailto:Carsten.Hansen&bksv.com 2019-02-13
[Christian_Storm] Christian Storm Axis Communications mailto:christnn&axis.com 2023-04-18
[Eran_Gampel] Eran Gampel mailto:eran&aoe6.net
[Hirsch_Singhal] Hirsch Singhal Microsoft Corporation mailto:hirsin&microsoft.com 2016-03-03
[Kazuyuki_Ashimura] Kazuyuki Ashimura mailto:ashimura&w3.org 2022-11-22
[Leslie_Mulder] Leslie Mulder ZigBee Alliance's Network Device working group mailto:ljm&exegin.com 2013-05-28
[Microsoft_Corporation_5] Microsoft Corporation mailto:hirsin&microsoft.com 2016-03-03
[Spectris_plc] Spectris plc mailto:Carsten.Hansen&bksv.com 2019-02-13
[Thomas_Quarendon] Thomas Quarendon World Programming Limited mailto:tom.quarendon&worldprogramming.com 2017-04-04
[W3C_Web_of_Things_Working_Group] W3C Web of Things Working Group mailto:team-wot&w3.org 2022-11-22
[World_Programming_Limited] World Programming Limited mailto:support&worldprogramming.com 2017-04-04
[ZigBee_Alliances_Network_Device_working_group] ZigBee Alliance's Network Device working group mailto:ljm&exegin.com 2013-05-28