Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2024-10-15
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
https 443 tcp http protocol over TLS/SSL [IESG] [IETF_Chair] 2021-10-01 [RFC9110]
https 443 udp http protocol over TLS/SSL [IESG] [IETF_Chair] 2021-10-01 [RFC9110]
https 443 sctp HTTPS [Randall_Stewart] [Randall_Stewart] 2022-02-07 [RFC9260]
kink 910 tcp Kerberized Internet Negotiation of Keys (KINK) [RFC4430]
kink 910 udp Kerberized Internet Negotiation of Keys (KINK) [RFC4430]
ies-lm 1443 tcp Integrated Engineering Software [David_Tong] [David_Tong]
ies-lm 1443 udp Integrated Engineering Software [David_Tong] [David_Tong]
powerclientcsf 2443 tcp PowerClient Central Storage Facility [Brian_Klassen] [Brian_Klassen]
powerclientcsf 2443 udp PowerClient Central Storage Facility [Brian_Klassen] [Brian_Klassen]
ov-nnm-websrv 3443 tcp OpenView Network Node Manager WEB Server [Anthony_Walker] [Anthony_Walker] 2002-03
ov-nnm-websrv 3443 udp OpenView Network Node Manager WEB Server [Anthony_Walker] [Anthony_Walker] 2002-03
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
pharos 4443 tcp Pharos [TeleConsult] [TeleConsult] Known Unauthorized Use on port 4443
pharos 4443 udp Pharos [TeleConsult] [TeleConsult] Known Unauthorized Use on port 4443
spss 5443 tcp Pearson HTTPS [Pearson] [Pearson] 2008-01-17
spss 5443 udp Pearson HTTPS [Pearson] [Pearson] 2008-01-17
sun-sr-https 6443 tcp Service Registry Default HTTPS Domain [Paul_Sterk] [Paul_Sterk] 2006-03
sun-sr-https 6443 udp Service Registry Default HTTPS Domain [Paul_Sterk] [Paul_Sterk] 2006-03
oracleas-https 7443 tcp Oracle Application Server HTTPS [David_McMarlin] [David_McMarlin] 2006-08
oracleas-https 7443 udp Oracle Application Server HTTPS [David_McMarlin] [David_McMarlin] 2006-08
pcsync-https 8443 tcp PCsync HTTPS
pcsync-https 8443 udp PCsync HTTPS
tungsten-https 9443 tcp WSO2 Tungsten HTTPS [Afkham_Azeez] [Afkham_Azeez] 2006-06
tungsten-https 9443 udp WSO2 Tungsten HTTPS [Afkham_Azeez] [Afkham_Azeez] 2006-06
cirrossp 10443 tcp CirrosSP Workstation Communication [Cirros_Document_Solutions_Ltd] [Andy_Garratt] 2020-02-12
10443 udp Reserved
27443-27503 Unassigned
m2ap 36443 sctp M2 Application Part [Dario_S_Tonesi] [Dario_S_Tonesi] 2011-02-07
44124-44320 Unassigned
pmcd 44321 tcp PCP server (pmcd) [Ken_McDonell] [Ken_McDonell] 2010-12-20
pmcd 44321 udp PCP server (pmcd) [Ken_McDonell] [Ken_McDonell] 2010-12-20
pmcdproxy 44322 tcp PCP server (pmcd) proxy [Ken_McDonell] [Ken_McDonell] 2003-07 2010-12-20
pmcdproxy 44322 udp PCP server (pmcd) proxy [Ken_McDonell] [Ken_McDonell] 2003-07 2010-12-20
pmwebapi 44323 tcp HTTP binding for Performance Co-Pilot client API [Performance_Co-Pilot_PCP_Project] [Ken_McDonell_2] 2013-10-09
44323 udp Unassigned "pcp" assignment withdrawn, moved to port 5351 per RFC6887
44324-44443 Unassigned

Contact Information

ID Name Organization Contact URI Last Updated
[Afkham_Azeez] Afkham Azeez mailto:azeez&wso2.com 2006-06
[Andy_Garratt] Andy Garratt Cirros Document Solutions Ltd mailto:admin&cirros.net 2020-02-12
[Anthony_Walker] Anthony Walker mailto:anthony_walker&hp.com 2002-03
[Brian_Klassen] Brian Klassen mailto:Brian.Klassen&unisys.com
[Christophe_Pignon] Christophe Pignon L-ACOUSTICS mailto:christophe.pignon&l-acoustics.com 2012-08-13
[Cirros_Document_Solutions_Ltd] Cirros Document Solutions Ltd mailto:admin&cirros.net 2020-02-12
[Dario_S_Tonesi] Dario S. Tonesi mailto:dario.tonesi&nsn.com 2011-02-07
[David_McMarlin] David McMarlin mailto:david.mcmarlin&oracle.com 2006-08
[David_Tong] David Tong mailto:David_Tong&integrated.mb.ca
[Heikki_E] Heikki Ellilä mailto:heikki.ellila&western.fi 2009-06-18
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[Ken_McDonell] Ken McDonell mailto:kenj&internode.on.net 2010-12-20
[Ken_McDonell_2] Ken_McDonell mailto:kenj&internode.on.net 2013-10-09
[L-ACOUSTICS] L-ACOUSTICS mailto:christophe.pignon&l-acoustics.com 2012-08-13
[Marco_Bambini] Marco Bambini mailto:marco&realsoftware.com 2008-08-28
[Paul_Sterk] Paul Sterk mailto:paul.sterk&sun.com 2006-03
[Pearson] Pearson mailto:chad.smith&pearson.com 2008-01-17
[Performance_Co-Pilot_PCP_Project] Performance Co-Pilot (PCP) Project mailto:kenj&internode.on.net 2013-10-09
[Randall_Stewart] Randall Stewart IETF TSVWG mailto:rrs&lakerest.net
[TeleConsult] TeleConsult GmbH, 76275 Ettlingen, Germany mailto:teleconsult&t-online.de
[Tore_Skaug] Tore Skaug Versile AS mailto:tore.skaug&versile.com 2012-02-01
[Versile_AS] Versile AS mailto:contact&versile.com 2012-02-01