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]

Available Formats

CSV

XML

HTML

Plain text
Service Name Port Number Transport Protocol Description Assignee Contact Registration Date Modification Date Reference Service Code Unauthorized Use Reported Assignment Notes
syslog-tls 6514 tcp Syslog over TLS [RFC5425]
datascaler-ctl 6625 tcp DataScaler control [Vasu_Murthy] [Vasu_Murthy] 2010-02-08
6625 udp Reserved
6925-6934 Unassigned
vmsvc-2 7025 tcp Vormetric Service II [Tom_Boyle] [Tom_Boyle] 2005-06
vmsvc-2 7025 udp Vormetric Service II [Tom_Boyle] [Tom_Boyle] 2005-06
7422-7425 Unassigned
7625 Unassigned
nitrogen 7725 tcp Nitrogen Service [Randy_Lomnes] [Randy_Lomnes] 2004-11
nitrogen 7725 udp Nitrogen Service [Randy_Lomnes] [Randy_Lomnes] 2004-11
ca-audit-da 8025 tcp CA Audit Distribution Agent [Henning_Smith] [Henning_Smith] 2006-07
ca-audit-da 8025 udp CA Audit Distribution Agent [Henning_Smith] [Henning_Smith] 2006-07
swa-3 9025 tcp Secure Web Access - 3 [Tim_McGranaghan] [Tim_McGranaghan]
swa-3 9025 udp Secure Web Access - 3 [Tim_McGranaghan] [Tim_McGranaghan]
9223-9254 Unassigned
mon 9255 tcp Manager On Network [David_Rouchet] [David_Rouchet] 2007-05
mon 9255 udp Manager On Network [David_Rouchet] [David_Rouchet] 2007-05
9256-9276 Unassigned
xybrid-cloud 9925 tcp XYBRID Cloud [Rx_Networks_Inc_2] [Drew_Davies_2] 2013-04-25
9925 udp Reserved
cimple 10125 tcp HotLink CIMple REST API [HotLink_Corporation] [Richard_Offer] 2014-12-18
10125 udp Reserved
10202-10251 Unassigned
apollo-relay 10252 tcp Apollo Relay Port [Anthony_Carrabino] [Anthony_Carrabino] 2003-08
apollo-relay 10252 udp Apollo Relay Port [Anthony_Carrabino] [Anthony_Carrabino] 2003-08
eapol-relay 10253 udp Relay of EAPOL frames [Wi-SUN_Alliance] [Phil_Beecher] 2015-06-26
10253 tcp Reserved
10254-10259 Unassigned
12346-12545 Unassigned
carb-repl-ctrl 12546 tcp Carbonite Server Replication Control [Open_Text_Corporation] [Tony_Ponzo] 2022-10-07
12546 udp Reserved
12547-12752 Unassigned
13225-13399 Unassigned
13725-13781 Unassigned
cps 14250 tcp Fencing Server [Mayank_Vasa] [Mayank_Vasa] 2008-04-03
cps 14250 udp Fencing Server [Mayank_Vasa] [Mayank_Vasa] 2008-04-03
14251-14413 Unassigned
trdp-md 17225 tcp Train Realtime Data Protocol (TRDP) Message Data [IEC_Central_Office] [Gianosvaldo_Fadin] 2015-07-24
trdp-md 17225 udp Train Realtime Data Protocol (TRDP) Message Data [IEC_Central_Office] [Gianosvaldo_Fadin] 2015-07-24
dcap 22125 tcp dCache Access Protocol [Christoph_Anton_Mitt] [Christoph_Anton_Mitt] 2009-03-10
22125 udp Reserved
22352-22536 Unassigned
caldsoft-backup 22537 tcp CaldSoft Backup server file transfer [CaldSoft] [Mark_Caldwell] 2011-08-12
22537 udp Reserved
22538-22554 Unassigned
vocaltec-wconf 22555 tcp Vocaltec Web Conference [Scott_Petrack] [Scott_Petrack]
vocaltec-phone 22555 udp Vocaltec Internet Phone [Scott_Petrack] [Scott_Petrack]
22556-22762 Unassigned
24250-24320 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]
25010-25099 Unassigned
db2c-tls 25100 tcp IBM Db2 Client Interface - Encrypted [IBM] [Matthew_Emmerton] 2024-03-05
25100 udp Reserved
25101-25470 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
26209-26256 Unassigned
cockroach 26257 tcp CockroachDB [Cockroach_Labs_Inc] [Ben_Darnell] 2015-09-29
26257 udp Reserved

Contact Information

ID Name Organization Contact URI Last Updated
[Anthony_Carrabino] Anthony Carrabino mailto:anthonyc&vistasoftware.com 2003-08
[Ben_Darnell] mailto:ben&cockroachlabs.com 2015-09-29
[CaldSoft] CaldSoft mailto:development&caldsoft.co.uk 2011-08-12
[Christian_Brecht] Christian Brecht mailto:Christian.Brecht&sauter-gmbh.de 2010-12-15
[Christoph_Anton_Mitt] Christoph Anton Mitterer mailto:calestyo&scientia.net 2009-03-10
[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
[Dario_S_Tonesi] Dario S. Tonesi mailto:dario.tonesi&nsn.com 2011-02-07
[David_Rouchet] David Rouchet mailto:david.rouchet&medialon.com 2007-05
[Drew_Davies_2] Drew Davies Rx Networks Inc. mailto:ddavies&rxnetworks.com 2013-04-25
[Gianosvaldo_Fadin] Gianosvaldo Fadin IEC Central Office mailto:gianosvaldo.fadin&anie.it 2015-07-24
[Henning_Smith] Henning Smith mailto:henning.smith&ca.com 2006-07
[HotLink_Corporation] HotLink Corporation mailto:roffer&hotlink.com 2014-12-18
[Huang_Neng-geng] Huang Neng-geng mailto:huangng&ngweb.org
mailto:nghuang&ieee.org
2011-08-09
[IBM] IBM mailto:memmerto&ca.ibm.com 2024-03-05
[IEC_Central_Office] IEC Central Office mailto:cj&iec.ch 2015-07-24
[J_A_Sever] J. A. (Tony) Sever mailto:J.A.Sever&bra0119.wins.icl.co.uk
[Mark_Caldwell] Mark Caldwell mailto:development&caldsoft.co.uk 2011-08-12
[Martin_Ellis] Martin Ellis mailto:martin&clanleagues.net 2004-11
[Matthew_Emmerton] Matthew Emmerton IBM mailto:memmerto&ca.ibm.com 2024-03-05
[Mayank_Vasa] Mayank Vasa mailto:mayank_vasa&symantec.com 2008-04-03
[Open_Text_Corporation] Open Text Corporation mailto:tponzo&opentext.com 2022-10-07
[Phil_Beecher] Phil Beecher Wi-SUN Alliance mailto:pbeecher&wi-sun.org 2015-06-26
[Randy_Lomnes] Randy Lomnes mailto:rlomnes&faronics.com 2004-11
[Richard_Offer] Richard Offer HotLink Corporation mailto:roffer&hotlink.com 2014-12-18
[Roman_Oliynyk] Roman Oliynyk mailto:romano&netinst.com
[Roman_Oliynyk_2] Roman Oliynyk mailto:roman&netinst.com 2007-08-30
[Rx_Networks_Inc_2] Rx Networks Inc. mailto:ddavies&rxnetworks.com 2013-04-25
[Scott_Petrack] Scott Petrack mailto:Scott_Petrack&vocaltec.com
[Tim_McGranaghan] Tim McGranaghan mailto:tim_mcgranaghan&mech.disa.mil
[Tom_Boyle] Tom Boyle mailto:tboyle&vormetric.com 2005-06
[Tony_Ponzo] Tony Ponzo Open Text Corporation mailto:tponzo&opentext.com 2022-10-07
[Vasu_Murthy] Vasu Murthy mailto:vmurthy&datascaler.com 2010-02-08
[Wi-SUN_Alliance] Wi-SUN Alliance mailto:admin&wi-sun.org 2015-06-26