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]

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
nvme 4420 tcp NVM Express over Fabrics storage access [NVM_Express_Inc] [Amber_Huffman] 2016-03-31 2018-03-27
nvme 4420 udp NVM Express over Fabrics storage access [NVM_Express_Inc] [Amber_Huffman] 2016-03-31 2018-03-27
scaleft 4421 tcp Multi-Platform Remote Management for Cloud Infrastructure [ScaleFT_Inc] [Paul_Querna] 2016-04-07
4421 udp Reserved
tsepisp 4422 tcp TSEP Installation Service Protocol [Technical_Software_Engineering_Plazotta] [Peter_Plazotta] 2016-06-22
4422 udp Reserved
thingkit 4423 tcp thingkit secure mesh [thingkit_inc.] [Chris_Bell] 2016-06-27
4423 udp Reserved
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 2022-09-15 [RFC9329]
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]

Contact Information

ID Name Organization Contact URI Last Updated
[Albert_Cester] Albert Cester mailto:albert.cester&assyst-intl.com 2008-08-26
[Amber_Huffman] Amber Huffman mailto:amber.huffman&intel.com 2018-03-27
[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
[Chris_Bell] Chris Bell mailto:cb&thingkit.co 2016-06-27
[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
[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
[NVM_Express_Inc] NVM Express, Inc. mailto:admin&nvmexpress.org 2018-03-27
[Paul_Querna] Paul Querna mailto:paul.querna&scaleft.com 2016-04-07
[Peter_Plazotta] Peter Plazotta mailto:peter.plazotta&tsep.de 2016-06-22
[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
[ScaleFT_Inc] ScaleFT, Inc mailto:notices&scaleft.com 2016-04-07
[Serge_Vacquier] Serge Vacquier mailto:svacquier&axway.com 2019-03-29
[Steve_Davis] Steve Davis mailto:sdavis&optum-inc.com
[Technical_Software_Engineering_Plazotta] Technical Software Engineering Plazotta mailto:peter.plazotta&tsep.de 2016-06-22
[TeleConsult] TeleConsult GmbH, 76275 Ettlingen, Germany mailto:teleconsult&t-online.de
[thingkit_inc.] thingkit, inc. mailto:cb&thingkit.co 2016-06-27
[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
[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