Service Name and Transport Protocol Port Number Registry

Last Updated
2016-02-04
Expert(s)
TCP/UDP: Joe Touch; Eliot Lear, Allison Mankin, Markku Kojo, Kumiko Ono, Martin Stiemerling, 
Lars Eggert, Alexey Melnikov, Wes Eddy, and Alexander Zimmermann
SCTP: Allison Mankin and 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 difference uses of these ranges is described in
[RFC6335]. System Ports are assigned by IETF
process for standards-track protocols, as per [RFC6335].  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.                                                   *
************************************************************************
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Service Name Port Number Transport Protocol Description Assignee Contact Registration Date Modification Date Reference Service Code Known Unauthorized Uses Assignment Notes
find 24922 udp Find Identification of Network Devices [Jean_Paul_Moreaux] [Jean_Paul_Moreaux]
24923-24999 Unassigned
icl-twobase1 25000 tcp icl-twobase1 [J_A_Sever] [J_A_Sever]
icl-twobase1 25000 udp icl-twobase1 [J_A_Sever] [J_A_Sever]
icl-twobase2 25001 tcp icl-twobase2 [J_A_Sever] [J_A_Sever]
icl-twobase2 25001 udp icl-twobase2 [J_A_Sever] [J_A_Sever]
icl-twobase3 25002 tcp icl-twobase3 [J_A_Sever] [J_A_Sever]
icl-twobase3 25002 udp icl-twobase3 [J_A_Sever] [J_A_Sever]
icl-twobase4 25003 tcp icl-twobase4 [J_A_Sever] [J_A_Sever]
icl-twobase4 25003 udp icl-twobase4 [J_A_Sever] [J_A_Sever]
icl-twobase5 25004 tcp icl-twobase5 [J_A_Sever] [J_A_Sever]
icl-twobase5 25004 udp icl-twobase5 [J_A_Sever] [J_A_Sever]
icl-twobase6 25005 tcp icl-twobase6 [J_A_Sever] [J_A_Sever]
icl-twobase6 25005 udp icl-twobase6 [J_A_Sever] [J_A_Sever]
icl-twobase7 25006 tcp icl-twobase7 [J_A_Sever] [J_A_Sever]
icl-twobase7 25006 udp icl-twobase7 [J_A_Sever] [J_A_Sever]
icl-twobase8 25007 tcp icl-twobase8 [J_A_Sever] [J_A_Sever]
icl-twobase8 25007 udp icl-twobase8 [J_A_Sever] [J_A_Sever]
icl-twobase9 25008 tcp icl-twobase9 [J_A_Sever] [J_A_Sever]
icl-twobase9 25008 udp icl-twobase9 [J_A_Sever] [J_A_Sever]
icl-twobase10 25009 tcp icl-twobase10 [J_A_Sever] [J_A_Sever]
icl-twobase10 25009 udp icl-twobase10 [J_A_Sever] [J_A_Sever]
25010-25470 Unassigned
rna 25471 sctp RNSAP User Adaptation for Iurh [Dario_S_Tonesi] [Dario_S_Tonesi] 2011-02-07
25472-25575 Unassigned
sauterdongle 25576 tcp Sauter Dongle [Christian_Brecht] [Christian_Brecht] 2010-12-15
25576 udp Reserved
25577-25603 Unassigned
idtp 25604 tcp Identifier Tracing Protocol [Huang_Neng-geng] [Huang_Neng-geng] 2011-08-09
25604 udp Reserved
25605-25792 Unassigned
vocaltec-hos 25793 tcp Vocaltec Address Server [Scott_Petrack] [Scott_Petrack]
vocaltec-hos 25793 udp Vocaltec Address Server [Scott_Petrack] [Scott_Petrack]
25794-25899 Unassigned
tasp-net 25900 tcp TASP Network Comm [Martin_Ellis] [Martin_Ellis] 2004-11
tasp-net 25900 udp TASP Network Comm [Martin_Ellis] [Martin_Ellis] 2004-11
niobserver 25901 tcp NIObserver [Roman_Oliynyk] [Roman_Oliynyk]
niobserver 25901 udp NIObserver [Roman_Oliynyk] [Roman_Oliynyk]
nilinkanalyst 25902 tcp NILinkAnalyst [Roman_Oliynyk_2] [Roman_Oliynyk_2] 2007-08-30
nilinkanalyst 25902 udp NILinkAnalyst [Roman_Oliynyk_2] [Roman_Oliynyk_2] 2007-08-30
niprobe 25903 tcp NIProbe [Roman_Oliynyk] [Roman_Oliynyk]
niprobe 25903 udp NIProbe [Roman_Oliynyk] [Roman_Oliynyk]
25904-25953 Unassigned
bf-game 25954 udp Bitfighter game server [Christopher_Eykamp] [Christopher_Eykamp] 2012-08-16
25954 tcp Reserved
bf-master 25955 udp Bitfighter master server [Christopher_Eykamp] [Christopher_Eykamp] 2012-08-16
25955 tcp Reserved
25956-25999 Unassigned
quake 26000 tcp quake [Yasunari_Gon_Yamasit] [Yasunari_Gon_Yamasit]
quake 26000 udp quake [Yasunari_Gon_Yamasit] [Yasunari_Gon_Yamasit]
26001-26132 Unassigned
scscp 26133 tcp Symbolic Computation Software Composability Protocol [Alexander_Konovalov] [Alexander_Konovalov] 2007-11-27
scscp 26133 udp Symbolic Computation Software Composability Protocol [Alexander_Konovalov] [Alexander_Konovalov] 2007-11-27
26134-26207 Unassigned
wnn6-ds 26208 tcp wnn6-ds [Yasunari_Gon_Yamasit] [Yasunari_Gon_Yamasit]
wnn6-ds 26208 udp wnn6-ds [Yasunari_Gon_Yamasit] [Yasunari_Gon_Yamasit]
26209-26256 Unassigned
cockroach 26257 tcp CockroachDB [Cockroach_Labs_Inc] [Ben_Darnell] 2015-09-29
26257 udp Reserved
26258-26259 Unassigned
ezproxy 26260 tcp eZproxy [Albert_C_Yang] [Albert_C_Yang]
ezproxy 26260 udp eZproxy [Albert_C_Yang] [Albert_C_Yang]
ezmeeting 26261 tcp eZmeeting [Albert_C_Yang] [Albert_C_Yang]
ezmeeting 26261 udp eZmeeting [Albert_C_Yang] [Albert_C_Yang]
k3software-svr 26262 tcp K3 Software-Server [Jim_Baldridge] [Jim_Baldridge]
k3software-svr 26262 udp K3 Software-Server [Jim_Baldridge] [Jim_Baldridge]
k3software-cli 26263 tcp K3 Software-Client [Jim_Baldridge] [Jim_Baldridge]
k3software-cli 26263 udp K3 Software-Client [Jim_Baldridge] [Jim_Baldridge]
26264 De-registered 2006-04-06
26265-26485 Unassigned
exoline-tcp 26486 tcp EXOline-TCP [Lars_Mattsson] [Lars_Mattsson] 2008-12-24
exoline-udp 26486 udp EXOline-UDP [Lars_Mattsson] [Lars_Mattsson] 2008-12-24
exoconfig 26487 tcp EXOconfig [Urban_Fosseus] [Urban_Fosseus] 2008-12-24
exoconfig 26487 udp EXOconfig [Urban_Fosseus] [Urban_Fosseus] 2008-12-24
26488 Unassigned
exonet 26489 tcp EXOnet [Urban_Fosseus] [Urban_Fosseus] 2008-12-24
exonet 26489 udp EXOnet [Urban_Fosseus] [Urban_Fosseus] 2008-12-24
26490-26999 Unassigned
flex-lm 27000-27009 FLEX LM (1-10) [Daniel_Birns] [Daniel_Birns]
27010-27344 Unassigned Unauthorized Use Known on ports 27017, 27018 and 27019
imagepump 27345 tcp ImagePump [Richard_Minner] [Richard_Minner]
imagepump 27345 udp ImagePump [Richard_Minner] [Richard_Minner]
27346-27441 Unassigned
jesmsjc 27442 tcp Job controller service [Chris_Newman] [Chris_Newman] 2010-10-15
jesmsjc 27442 udp Job controller service [Chris_Newman] [Chris_Newman] 2010-10-15
27443-27503 Unassigned
kopek-httphead 27504 tcp Kopek HTTP Head Port [Sten_H_Danielsen] [Sten_H_Danielsen] 2002-07
kopek-httphead 27504 udp Kopek HTTP Head Port [Sten_H_Danielsen] [Sten_H_Danielsen] 2002-07
27505-27781 Unassigned
ars-vista 27782 tcp ARS VISTA Application [Spencer_Teran_2] [Spencer_Teran_2] 2004-11
ars-vista 27782 udp ARS VISTA Application [Spencer_Teran_2] [Spencer_Teran_2] 2004-11
27783-27875 Unassigned
astrolink 27876 tcp Astrolink Protocol [Alanax_Technologies_Inc] [Wesley_Eddy] 2013-01-14
27876 udp Reserved
27877-27998 Unassigned
tw-auth-key 27999 tcp TW Authentication/Key Distribution and [Alex_Duncan_2] [Alex_Duncan_2]
tw-auth-key 27999 udp Attribute Certificate Services [Alex_Duncan_2] [Alex_Duncan_2]
nxlmd 28000 tcp NX License Manager [Anthony_Greatorex] [Anthony_Greatorex] 2004-11 Unauthorized Use Known on port 28000
nxlmd 28000 udp NX License Manager [Anthony_Greatorex] [Anthony_Greatorex] 2004-11
pqsp 28001 tcp PQ Service [Peter_Laschtowitz] [Peter_Laschtowitz] 2009-09-15
28001 udp Reserved

People

ID Name Organization Contact URI Last Updated
[Alanax_Technologies_Inc] Alanax Technologies, Inc mailto:brian.barritt&alanax.com 2013-01-14
[Albert_C_Yang] Albert C. Yang mailto:albert.yang&ezmeeting.com 2002-03
[Alex_Duncan_2] Alex Duncan mailto:Alex.Duncan&sse.ie
[Alexander_Konovalov] Alexander Konovalov mailto:konovalov&member.ams.org 2007-11-27
[Anthony_Greatorex] Anthony Greatorex mailto:greatore&ugs.com 2004-11
[Ben_Darnell] mailto:ben&cockroachlabs.com 2015-09-29
[Chris_Newman] Chris Newman mailto:chris.newman&oracle.com 2010-10-15
[Christian_Brecht] Christian Brecht mailto:Christian.Brecht&sauter-gmbh.de 2010-12-15
[Christopher_Eykamp] Christopher Eykamp mailto:chris&eykamp.com 2012-08-16
[Cockroach_Labs_Inc] Cockroach Labs, Inc. mailto:iana-contact&cockroachlabs.com 2015-09-29
[Daniel_Birns] Daniel Birns mailto:daniel&globes.com
[Dario_S_Tonesi] Dario S. Tonesi mailto:dario.tonesi&nsn.com 2011-02-07
[Huang_Neng-geng] Huang Neng-geng mailto:huangng&ngweb.org
mailto:nghuang&ieee.org
2011-08-09
[J_A_Sever] J. A. (Tony) Sever mailto:J.A.Sever&bra0119.wins.icl.co.uk
[Jean_Paul_Moreaux] Jean-Paul Moreaux mailto:jean-paul.moreaux&airbus.com
[Jim_Baldridge] Jim Baldridge mailto:jimb&rpower.com
[Lars_Mattsson] Lars Mattsson mailto:lars.mattsson&regin.se 2008-12-24
[Martin_Ellis] Martin Ellis mailto:martin&clanleagues.net 2004-11
[Peter_Laschtowitz] Peter Laschtowitz mailto:pl&pq-computers.de 2009-09-15
[Richard_Minner] Richard Minner http://xippix.com
[Roman_Oliynyk] Roman Oliynyk mailto:romano&netinst.com
[Roman_Oliynyk_2] Roman Oliynyk mailto:roman&netinst.com 2007-08-30
[Scott_Petrack] Scott Petrack mailto:Scott_Petrack&vocaltec.com
[Spencer_Teran_2] Spencer Teran mailto:steran&ars.com 2004-11
[Sten_H_Danielsen] Sten H. Danielsen mailto:shd&kopek.net 2002-07
[Urban_Fosseus] Urban Fosseus mailto:urban.fosseus&regin.se 2008-12-24
[Wesley_Eddy] Wesley Eddy Alanax Technologies, Inc mailto:wesley.eddy&alanax.com 2013-01-14
[Yasunari_Gon_Yamasit] Yasunari Gon Yamasita mailto:yamasita&omronsoft.co.jp