Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2024-12-20
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
hacl-cfg 5302 udp HA cluster configuration [Eric_Soderberg_2][Edward_Yim] [Eric_Soderberg_2][Edward_Yim]
hacl-probe 5303 tcp HA cluster probing [Eric_Soderberg_2][Edward_Yim] [Eric_Soderberg_2][Edward_Yim]
hacl-probe 5303 udp HA cluster probing [Eric_Soderberg_2][Edward_Yim] [Eric_Soderberg_2][Edward_Yim]
hacl-local 5304 tcp HA Cluster Commands [Eric_Soderberg_2][Edward_Yim] [Eric_Soderberg_2][Edward_Yim]
hacl-local 5304 udp HA Cluster Commands [Eric_Soderberg_2][Edward_Yim] [Eric_Soderberg_2][Edward_Yim]
hacl-test 5305 tcp HA Cluster Test [Eric_Soderberg_2][Edward_Yim] [Eric_Soderberg_2][Edward_Yim]
hacl-test 5305 udp HA Cluster Test [Eric_Soderberg_2][Edward_Yim] [Eric_Soderberg_2][Edward_Yim]
sun-mc-grp 5306 tcp Sun MC Group [Michael_DeMoney] [Michael_DeMoney]
sun-mc-grp 5306 udp Sun MC Group [Michael_DeMoney] [Michael_DeMoney]
sco-aip 5307 tcp SCO AIP [Barrie_Cooper] [Barrie_Cooper]
sco-aip 5307 udp SCO AIP [Barrie_Cooper] [Barrie_Cooper]
cfengine 5308 tcp CFengine [Mark_Burgess] [Mark_Burgess]
cfengine 5308 udp CFengine [Mark_Burgess] [Mark_Burgess]
jprinter 5309 tcp J Printer [Ken_Blackwell] [Ken_Blackwell]
jprinter 5309 udp J Printer [Ken_Blackwell] [Ken_Blackwell]
outlaws 5310 tcp Outlaws [Richard_Fife] [Richard_Fife]
outlaws 5310 udp Outlaws [Richard_Fife] [Richard_Fife]
5311 Unassigned 2004-05-07
permabit-cs 5312 tcp Permabit Client-Server [Jered_Floyd] [Jered_Floyd] 2004-06
permabit-cs 5312 udp Permabit Client-Server [Jered_Floyd] [Jered_Floyd] 2004-06
rrdp 5313 tcp Real-time & Reliable Data [Ted_Hoshi] [Ted_Hoshi] 2004-06
rrdp 5313 udp Real-time & Reliable Data [Ted_Hoshi] [Ted_Hoshi] 2004-06
opalis-rbt-ipc 5314 tcp opalis-rbt-ipc [Laurent_Domenech] [Laurent_Domenech]
opalis-rbt-ipc 5314 udp opalis-rbt-ipc [Laurent_Domenech] [Laurent_Domenech]
hacl-poll 5315 tcp HA Cluster UDP Polling [Hoa_Nguyen] [Hoa_Nguyen]
hacl-poll 5315 udp HA Cluster UDP Polling [Hoa_Nguyen] [Hoa_Nguyen]
hpbladems 5316 tcp HPBladeSystem Monitor Service [Alan_Minchew] [Alan_Minchew] 2011-05-23 2011-05-16
5316 udp Unassigned 2011-05-16
hpdevms 5317 tcp HP Device Monitor Service [Alan_Minchew] [Alan_Minchew] 2011-05-16
5317 udp Reserved
pkix-cmc 5318 tcp PKIX Certificate Management using CMS (CMC) [IESG] [IETF_Chair] [RFC6402]
5318 udp Reserved
5319 Unassigned
bsfserver-zn 5320 tcp Webservices-based Zn interface of BSF [Bert_Paul] [Bert_Paul] 2008-05-01
5320 udp Reserved
bsfsvr-zn-ssl 5321 tcp Webservices-based Zn interface of BSF over SSL [Bert_Paul] [Bert_Paul] 2008-07-03
5321 udp Reserved
5322-5342 Unassigned
kfserver 5343 tcp Sculptor Database Server [Keith_Ashman] [Keith_Ashman] 2005-12
kfserver 5343 udp Sculptor Database Server [Keith_Ashman] [Keith_Ashman] 2005-12
xkotodrcp 5344 tcp xkoto DRCP [Jeff_Heisz] [Jeff_Heisz] 2006-02
xkotodrcp 5344 udp xkoto DRCP [Jeff_Heisz] [Jeff_Heisz] 2006-02
5345-5348 Unassigned
stuns 5349 tcp Session Traversal Utilities for NAT (STUN) port [IESG] [IETF_Chair] 2019-03-28 [RFC8489]
stuns 5349 udp STUN over DTLS [IESG] [IETF_Chair] 2014-07-03 [RFC7350] This service name was initially created by [RFC5389].
turns 5349 tcp TURN over TLS 2019-08-02 [RFC8656]
turns 5349 udp TURN over DTLS [IESG] [IETF_Chair] 2019-08-02 [RFC7350] This service name was initially created by [RFC8656].
stun-behaviors 5349 tcp STUN Behavior Discovery over TLS [RFC5780]
stun-behaviors 5349 udp Reserved for a future enhancement of STUN-BEHAVIOR [RFC5780]
5350 tcp Reserved
pcp-multicast 5350 udp Port Control Protocol Multicast [IESG] [IETF_Chair] [RFC6887]
5351 tcp Reserved
pcp 5351 udp Port Control Protocol [IESG] [IETF_Chair] [RFC6887]
dns-llq 5352 tcp DNS Long-Lived Queries [Stuart_Cheshire] [Stuart_Cheshire] 2005-08 2019-08-26 [RFC8764]
dns-llq 5352 udp DNS Long-Lived Queries [Stuart_Cheshire] [Stuart_Cheshire] 2005-08 2019-08-26 [RFC8764]
mdns 5353 tcp Multicast DNS [IESG] [IETF_Chair] [RFC6762]
mdns 5353 udp Multicast DNS [IESG] [IETF_Chair] [RFC6762]
mdnsresponder 5354 tcp Multicast DNS Responder IPC [Stuart_Cheshire_3] [Stuart_Cheshire_3] 2004-06
mdnsresponder 5354 udp Multicast DNS Responder IPC [Stuart_Cheshire_3] [Stuart_Cheshire_3] 2004-06
llmnr 5355 tcp LLMNR [Bernard_Aboba] [Bernard_Aboba] 2004-06
llmnr 5355 udp LLMNR [Bernard_Aboba] [Bernard_Aboba] 2004-06
ms-smlbiz 5356 tcp Microsoft Small Business [Gopikrishna_Sandra] [Gopikrishna_Sandra] 2005-02
ms-smlbiz 5356 udp Microsoft Small Business [Gopikrishna_Sandra] [Gopikrishna_Sandra] 2005-02
wsdapi 5357 tcp Web Services for Devices [Henry_Rawas] [Henry_Rawas] 2005-08
wsdapi 5357 udp Web Services for Devices [Henry_Rawas] [Henry_Rawas] 2005-08
wsdapi-s 5358 tcp WS for Devices Secured [Henry_Rawas] [Henry_Rawas] 2005-08
wsdapi-s 5358 udp WS for Devices Secured [Henry_Rawas] [Henry_Rawas] 2005-08
ms-alerter 5359 tcp Microsoft Alerter [Marc_McClure] [Marc_McClure] 2007-08-07
ms-alerter 5359 udp Microsoft Alerter [Marc_McClure] [Marc_McClure] 2007-08-07
ms-sideshow 5360 tcp Protocol for Windows SideShow [Dan_Polivy] [Dan_Polivy] 2008-03-12
ms-sideshow 5360 udp Protocol for Windows SideShow [Dan_Polivy] [Dan_Polivy] 2008-03-12
ms-s-sideshow 5361 tcp Secure Protocol for Windows SideShow [Dan_Polivy] [Dan_Polivy] 2008-03-12
ms-s-sideshow 5361 udp Secure Protocol for Windows SideShow [Dan_Polivy] [Dan_Polivy] 2008-03-12
serverwsd2 5362 tcp Microsoft Windows Server WSD2 Service [Erhan_Soyer_Osman] [Erhan_Soyer_Osman] 2008-03-26
serverwsd2 5362 udp Microsoft Windows Server WSD2 Service [Erhan_Soyer_Osman] [Erhan_Soyer_Osman] 2008-03-26
net-projection 5363 tcp Windows Network Projection [Rob_Williams] [Rob_Williams] 2009-02-17
net-projection 5363 udp Windows Network Projection [Rob_Williams] [Rob_Williams] 2009-02-17
kdnet 5364 udp Microsoft Kernel Debugger [Microsoft_Corporation_4] [Joe_Ballantyne] 2013-06-16
5364 tcp Reserved
5365-5396 Unassigned
stresstester 5397 tcp StressTester(tm) Injector [Graham_Parsons] [Graham_Parsons] 2005-08
stresstester 5397 udp StressTester(tm) Injector [Graham_Parsons] [Graham_Parsons] 2005-08
elektron-admin 5398 tcp Elektron Administration [Chris_Hawk] [Chris_Hawk] 2005-08
elektron-admin 5398 udp Elektron Administration [Chris_Hawk] [Chris_Hawk] 2005-08
securitychase 5399 tcp SecurityChase [Daisuke_Shinomiya] [Daisuke_Shinomiya] 2005-08
securitychase 5399 udp SecurityChase [Daisuke_Shinomiya] [Daisuke_Shinomiya] 2005-08
excerpt 5400 tcp Excerpt Search [John_Hinsdale] [John_Hinsdale]
excerpt 5400 udp Excerpt Search [John_Hinsdale] [John_Hinsdale]
excerpts 5401 tcp Excerpt Search Secure [John_Hinsdale] [John_Hinsdale]
excerpts 5401 udp Excerpt Search Secure [John_Hinsdale] [John_Hinsdale]
mftp 5402 tcp OmniCast MFTP [Steve_Bannister] [Steve_Bannister]
mftp 5402 udp OmniCast MFTP [Steve_Bannister] [Steve_Bannister]
hpoms-ci-lstn 5403 tcp HPOMS-CI-LSTN [Harold_Froehling] [Harold_Froehling]
hpoms-ci-lstn 5403 udp HPOMS-CI-LSTN [Harold_Froehling] [Harold_Froehling]
hpoms-dps-lstn 5404 tcp HPOMS-DPS-LSTN [Harold_Froehling] [Harold_Froehling]
hpoms-dps-lstn 5404 udp HPOMS-DPS-LSTN [Harold_Froehling] [Harold_Froehling]
netsupport 5405 tcp NetSupport [Paul_Sanders_2] [Paul_Sanders_2]
netsupport 5405 udp NetSupport [Paul_Sanders_2] [Paul_Sanders_2]
systemics-sox 5406 tcp Systemics Sox [Gary_Howland] [Gary_Howland]
systemics-sox 5406 udp Systemics Sox [Gary_Howland] [Gary_Howland]
foresyte-clear 5407 tcp Foresyte-Clear [Jorge_Aldana] [Jorge_Aldana]

Contact Information

ID Name Organization Contact URI Last Updated
[Alan_Minchew] Alan Minchew mailto:alan.minchew&hp.com 2011-05-23
[Barrie_Cooper] Barrie Cooper mailto:barrie&sco.com
[Bernard_Aboba] Bernard Aboba mailto:bernarda&microsoft.com 2004-06
[Bert_Paul] Bert Paul mailto:bert.paul&apertio.com 2008-07-03
[Chris_Hawk] Chris Hawk mailto:chris&corriente.net 2005-08
[Daisuke_Shinomiya] Daisuke Shinomiya mailto:shinomiya.daisu&jp.fujitsu.com 2005-08
[Dan_Polivy] Dan Polivy mailto:dpolivy&microsoft.com 2008-03-12
[Edward_Yim] Edward Yim mailto:eyim&hpmfas4.cup.hp.com
[Erhan_Soyer_Osman] Erhan Soyer-Osman mailto:erhanso&microsoft.com 2008-03-26
[Eric_Soderberg_2] Eric Soderberg mailto:seric&hposl102.cup.hp
[Gary_Howland] Gary Howland mailto:gary&systemics.com
[Gopikrishna_Sandra] Gopikrishna Sandra mailto:v-gosand&microsoft.com 2005-02
[Graham_Parsons] Graham Parsons mailto:graham.parsons&reflective.com 2005-08
[Harold_Froehling] Harold Froehling mailto:hrf&cup.hp.com
[Henry_Rawas] Henry Rawas mailto:henryr&microsoft.com 2005-08
[Hoa_Nguyen] Hoa Nguyen mailto:hoan&cup.hp.com
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[Jeff_Heisz] Jeff Heisz mailto:jeff.heisz&xkoto.com 2006-02
[Jered_Floyd] Jered Floyd mailto:jered&permabit.com 2004-06
[Joe_Ballantyne] Joe Ballantyne Microsoft Corporation mailto:joeball&microsoft.com 2013-06-16
[John_Hinsdale] John Hinsdale mailto:hin&alma.com
[Jorge_Aldana] Jorge Aldana mailto:operator&foresyte.com
[Keith_Ashman] Keith Ashman mailto:sciana&sculptor.co.uk 2005-12
[Ken_Blackwell] Ken Blackwell mailto:kenb&bristol.com
[Laurent_Domenech] Laurent Domenech Opalis mailto:ldomenech&opalis.com
[Marc_McClure] Marc McClure mailto:marcmcc&microsoft.com 2007-08-07
[Mark_Burgess] Mark Burgess mailto:mark.burgess&iu.hioslo.no
[Michael_DeMoney] Michael DeMoney mailto:demoney&eng.sun.com
[Microsoft_Corporation_4] Microsoft Corporation mailto:joeball&microsoft.com 2013-06-16
[Paul_Sanders_2] Paul Sanders mailto:pe77&dial.pipex.com
[Richard_Fife] Richard Fife mailto:richardf&lucasarts.com
[Rob_Williams] Rob Williams mailto:rob.williams&microsoft.com 2009-02-17
[Steve_Bannister] Steve Bannister mailto:sbannister&stratacache.com
[Stuart_Cheshire] Stuart Cheshire mailto:cheshire&apple.com 2022-07-11
[Stuart_Cheshire_3] Stuart Cheshire mailto:mdnsresponder-ipc&multicastdns.org 2004-06
[Ted_Hoshi] Ted Hoshi mailto:tetsuo.hoshi&jp.yokogawa.com 2004-06