Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2022-05-24
Expert(s)
TCP/UDP: Joe Touch; Eliot Lear, Markku Kojo, Kumiko Ono, Martin Stiemerling, 
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.                                                   *
************************************************************************
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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
4424 Unassigned
netrockey6 4425 tcp NetROCKEY6 SMART Plus Service [Feitian_Technologies] [Feitian_Technologies] 2010-09-15
netrockey6 4425 udp NetROCKEY6 SMART Plus Service [Feitian_Technologies] [Feitian_Technologies] 2010-09-15
beacon-port-2 4426 tcp SMARTS Beacon Port [Eyal_Yardeni] [Eyal_Yardeni] 2003-11
beacon-port-2 4426 udp SMARTS Beacon Port [Eyal_Yardeni] [Eyal_Yardeni] 2003-11
drizzle 4427 tcp Drizzle database server [Elliot_Murphy] [Elliot_Murphy] 2008-07-09
4427 udp Reserved
omviserver 4428 tcp OMV-Investigation Server-Client [Serge_Vacquier] [Serge_Vacquier] 2009-05-20
4428 udp Reserved
omviagent 4429 tcp OMV Investigation Agent-Server [Serge_Vacquier] [Serge_Vacquier] 2009-05-20
4429 udp Reserved
rsqlserver 4430 tcp REAL SQL Server [Marco_Bambini] [Marco_Bambini] 2008-08-28
rsqlserver 4430 udp REAL SQL Server [Marco_Bambini] [Marco_Bambini] 2008-08-28
wspipe 4431 tcp adWISE Pipe [Heikki_E] [Heikki_E] 2009-06-18
4431 udp Reserved
l-acoustics 4432 tcp L-ACOUSTICS management [L-ACOUSTICS] [Christophe_Pignon] 2012-08-13
l-acoustics 4432 udp L-ACOUSTICS management [L-ACOUSTICS] [Christophe_Pignon] 2012-08-13
vop 4433 tcp Versile Object Protocol [Versile_AS] [Tore_Skaug] 2012-02-01
4433 udp Reserved
4434-4440 Unassigned
4441 tcp Reserved
netblox 4441 udp Netblox Protocol [Brian_S_Locke] [Brian_S_Locke] 2008-07-10
saris 4442 tcp Saris
saris 4442 udp Saris
pharos 4443 tcp Pharos [TeleConsult] [TeleConsult] Known Unauthorized Use on port 4443
pharos 4443 udp Pharos [TeleConsult] [TeleConsult] Known Unauthorized Use on port 4443
krb524 4444 tcp KRB524 [B_Clifford_Neuman] [B_Clifford_Neuman] krb524 assigned the port, nv used it without an assignment
krb524 4444 udp KRB524 [B_Clifford_Neuman] [B_Clifford_Neuman] krb524 assigned the port, nv used it without an assignment
nv-video 4444 tcp NV Video default [Ron_Frederick] [Ron_Frederick] krb524 assigned the port, nv used it without an assignment
nv-video 4444 udp NV Video default [Ron_Frederick] [Ron_Frederick] krb524 assigned the port, nv used it without an assignment
upnotifyp 4445 tcp UPNOTIFYP [Mark_Fox] [Mark_Fox]
upnotifyp 4445 udp UPNOTIFYP [Mark_Fox] [Mark_Fox]
n1-fwp 4446 tcp N1-FWP
n1-fwp 4446 udp N1-FWP
n1-rmgmt 4447 tcp N1-RMGMT [Lori_Tassin] [Lori_Tassin]
n1-rmgmt 4447 udp N1-RMGMT [Lori_Tassin] [Lori_Tassin]
asc-slmd 4448 tcp ASC Licence Manager [Casper_Stoel] [Casper_Stoel]
asc-slmd 4448 udp ASC Licence Manager [Casper_Stoel] [Casper_Stoel]
privatewire 4449 tcp PrivateWire [Uri_Resnitzky] [Uri_Resnitzky]
privatewire 4449 udp PrivateWire [Uri_Resnitzky] [Uri_Resnitzky]
camp 4450 tcp Common ASCII Messaging Protocol [Control_Technology_Inc] [Clint_Eskew] 2011-10-28
camp 4450 udp Common ASCII Messaging Protocol [Control_Technology_Inc] [Clint_Eskew] 2011-10-28
ctisystemmsg 4451 tcp CTI System Msg [Control_Technology_Inc] [Clint_Eskew] 2011-10-28
ctisystemmsg 4451 udp CTI System Msg [Control_Technology_Inc] [Clint_Eskew] 2011-10-28
ctiprogramload 4452 tcp CTI Program Load [Control_Technology_Inc] [Clint_Eskew] 2011-10-28
ctiprogramload 4452 udp CTI Program Load [Control_Technology_Inc] [Clint_Eskew] 2011-10-28
nssalertmgr 4453 tcp NSS Alert Manager
nssalertmgr 4453 udp NSS Alert Manager
nssagentmgr 4454 tcp NSS Agent Manager [Jim_Hill] [Jim_Hill]
nssagentmgr 4454 udp NSS Agent Manager [Jim_Hill] [Jim_Hill]
prchat-user 4455 tcp PR Chat User
prchat-user 4455 udp PR Chat User
prchat-server 4456 tcp PR Chat Server
prchat-server 4456 udp PR Chat Server
prRegister 4457 tcp PR Register [Donny_Gilor] [Donny_Gilor]
prRegister 4457 udp PR Register [Donny_Gilor] [Donny_Gilor]
mcp 4458 tcp Matrix Configuration Protocol [Tim_DeBaillie] [Tim_DeBaillie] 2006-12
mcp 4458 udp Matrix Configuration Protocol [Tim_DeBaillie] [Tim_DeBaillie] 2006-12
4459 Unassigned
ntske 4460 tcp Network Time Security Key Establishment [IESG] [IETF_Chair] 2020-04-07 [RFC8915]
4460 udp Reserved
4461-4483 Unassigned
hpssmgmt 4484 tcp hpssmgmt service [David_Straw] [David_Straw] 2005-11
hpssmgmt 4484 udp hpssmgmt service [David_Straw] [David_Straw] 2005-11
assyst-dr 4485 tcp Assyst Data Repository Service [Albert_Cester] [Albert_Cester] 2008-08-26
4485 udp Reserved
icms 4486 tcp Integrated Client Message Service [Resource_Allocation] [Resource_Allocation] 2010-09-27
icms 4486 udp Integrated Client Message Service [Resource_Allocation] [Resource_Allocation] 2010-09-27
prex-tcp 4487 tcp Protocol for Remote Execution over TCP [Daniel_Ruppert] [Daniel_Ruppert] 2010-09-16
4487 udp Reserved
awacs-ice 4488 tcp Apple Wide Area Connectivity Service ICE Bootstrap [Rory_McGuire] [Rory_McGuire] 2010-09-24
awacs-ice 4488 udp Apple Wide Area Connectivity Service ICE Bootstrap [Rory_McGuire] [Rory_McGuire] 2010-09-24
4489-4499 Unassigned Known UNAUTHORIZED USE: Ports 4490 and 4491
ipsec-nat-t 4500 tcp IPsec NAT-Traversal 2017-06-19 [RFC8229]
ipsec-nat-t 4500 udp IPsec NAT-Traversal 2017-07-07 [RFC3948][RFC7296]
4501 Unassigned [IANA] [IANA] De-registered 08 June 2001
a25-fap-fgw 4502 sctp A25 (FAP-FGW) [ThreeGPP_2] [Zhiming_Li] 2012-01-11
4503-4533 Unassigned
4534 tcp Reserved
armagetronad 4534 udp Armagetron Advanced Game Server [Manuel_Moos] [Yann_Kaiser] 2012-11-02
ehs 4535 tcp Event Heap Server
ehs 4535 udp Event Heap Server
ehs-ssl 4536 tcp Event Heap Server SSL [Brad_Johanson] [Brad_Johanson] 2005-08
ehs-ssl 4536 udp Event Heap Server SSL [Brad_Johanson] [Brad_Johanson] 2005-08
wssauthsvc 4537 tcp WSS Security Service [Mark_Tirschwell] [Mark_Tirschwell] 2006-01
wssauthsvc 4537 udp WSS Security Service [Mark_Tirschwell] [Mark_Tirschwell] 2006-01
swx-gate 4538 tcp Software Data Exchange Gateway [Julien_VALIENTE] [Julien_VALIENTE] 2006-05
swx-gate 4538 udp Software Data Exchange Gateway [Julien_VALIENTE] [Julien_VALIENTE] 2006-05
4539-4544 Unassigned
worldscores 4545 tcp WorldScores [Steve_Davis] [Steve_Davis]
worldscores 4545 udp WorldScores [Steve_Davis] [Steve_Davis]
sf-lm 4546 tcp SF License Manager (Sentinel) [Thomas_Koell] [Thomas_Koell]
sf-lm 4546 udp SF License Manager (Sentinel) [Thomas_Koell] [Thomas_Koell]
lanner-lm 4547 tcp Lanner License Manager [Les_Enstone] [Les_Enstone]
lanner-lm 4547 udp Lanner License Manager [Les_Enstone] [Les_Enstone]
synchromesh 4548 tcp Synchromesh [Tom_Hawkins_2] [Tom_Hawkins_2] 2006-02
synchromesh 4548 udp Synchromesh [Tom_Hawkins_2] [Tom_Hawkins_2] 2006-02
aegate 4549 tcp Aegate PMR Service [Nick_Warrington] [Nick_Warrington] 2006-03
aegate 4549 udp Aegate PMR Service [Nick_Warrington] [Nick_Warrington] 2006-03
gds-adppiw-db 4550 tcp Perman I Interbase Server [Leo_Lesage] [Leo_Lesage] 2006-04
gds-adppiw-db 4550 udp Perman I Interbase Server [Leo_Lesage] [Leo_Lesage] 2006-04

Contact Information

ID Name Organization Contact URI Last Updated
[Albert_Cester] Albert Cester mailto:albert.cester&assyst-intl.com 2008-08-26
[B_Clifford_Neuman] B. Clifford Neuman mailto:bcn&isi.edu 2022-02-18
[Brad_Johanson] Brad Johanson mailto:bradj&tidebreak.com 2005-08
[Brian_S_Locke] Brian S. Locke mailto:blocke&zortlabs.com 2008-07-10
[Casper_Stoel] Casper Stoel mailto:cbs&ascinc.com
[Christophe_Pignon] Christophe Pignon L-ACOUSTICS mailto:christophe.pignon&l-acoustics.com 2012-08-13
[Clint_Eskew] Clint Eskew Control Technology Inc. mailto:ceskew&controltechnology.com 2011-10-28
[Control_Technology_Inc] Control Technology Inc. mailto:ceskew&controltechnology.com 2011-10-28
[Daniel_Ruppert] Daniel Ruppert mailto:daniel&kaffi.lu 2010-09-16
[David_Straw] David Straw mailto:david.straw&hp.com 2005-11
[Donny_Gilor] Donny Gilor mailto:dgilor&pop01.ny.us.ibm.net
[Elliot_Murphy] Elliot Murphy mailto:elliot.murphy&gmail.com 2008-07-09
[Eyal_Yardeni] Eyal Yardeni mailto:eyal.yardeni&smarts.com 2003-11
[Feitian_Technologies] Feitian Technologies mailto:product&ftsafe.com 2010-09-15
[Heikki_E] Heikki Ellilä mailto:heikki.ellila&western.fi 2009-06-18
[IANA] IANA mailto:iana&iana.org
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[Jim_Hill] Jim Hill mailto:jhill&symantec.com
[Julien_VALIENTE] Julien VALIENTE mailto:j.valiente&objectif-software.com 2006-05
[L-ACOUSTICS] L-ACOUSTICS mailto:christophe.pignon&l-acoustics.com 2012-08-13
[Leo_Lesage] Leo Lesage mailto:leo.lesage&adp.nl 2006-04
[Les_Enstone] Les Enstone mailto:lenstone&lanner.co.uk
[Lori_Tassin] Lori Tassin mailto:Ramsey&network-1.com
[Manuel_Moos] Manuel Moos mailto:z-man&users.sf.net 2012-11-02
[Marco_Bambini] Marco Bambini mailto:marco&realsoftware.com 2008-08-28
[Mark_Fox] Mark Fox mailto:markf&uplanet.com
[Mark_Tirschwell] Mark Tirschwell mailto:mark.tirschwell&wallstreetsystems.com 2006-01
[Nick_Warrington] Nick Warrington mailto:nick.warrington&paconsulting.com 2006-03
[Resource_Allocation] Resource Allocation Team mailto:resources&littlehall.com 2010-09-27
[Ron_Frederick] Ron Frederick mailto:frederick&parc.xerox.com
[Rory_McGuire] Rory McGuire mailto:rlpm&apple.com 2010-09-24
[Serge_Vacquier] Serge Vacquier mailto:svacquier&axway.com 2019-03-29
[Steve_Davis] Steve Davis mailto:sdavis&optum-inc.com
[TeleConsult] TeleConsult GmbH, 76275 Ettlingen, Germany mailto:teleconsult&t-online.de
[Thomas_Koell] Thomas Koell mailto:info&sf.com
[ThreeGPP_2] 3GPP2 mailto:lizhiming&huawei.com 2012-01-11
[Tim_DeBaillie] Tim DeBaillie mailto:debaillie&ciholas.com 2006-12
[Tom_Hawkins_2] Tom Hawkins mailto:tomahawkins&gmail.com 2006-02
[Tore_Skaug] Tore Skaug Versile AS mailto:tore.skaug&versile.com 2012-02-01
[Uri_Resnitzky] Uri Resnitzky mailto:info&arx.com
[Versile_AS] Versile AS mailto:contact&versile.com 2012-02-01
[Yann_Kaiser] Yann Kaiser mailto:kaiser.yann&gmail.com 2012-11-02
[Zhiming_Li] Zhiming Li 3GPP2 mailto:lizhiming&huawei.com 2012-01-11