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]

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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
4916-4935 Unassigned
an-signaling 4936 udp Signal protocol port for autonomic networking [Cisco_Systems_3] [Toerless_Eckert_2] 2014-06-06
4936 tcp Reserved
4937 tcp Reserved
atsc-mh-ssc 4937 udp ATSC-M/H Service Signaling Channel [Jerry_Whitaker] [Jerry_Whitaker] 2008-10-27
4938-4939 Unassigned
eq-office-4940 4940 tcp Equitrac Office
eq-office-4940 4940 udp Equitrac Office
eq-office-4941 4941 tcp Equitrac Office
eq-office-4941 4941 udp Equitrac Office
eq-office-4942 4942 tcp Equitrac Office [Tom_Haapanen_2] [Tom_Haapanen_2] 2007-07-11
eq-office-4942 4942 udp Equitrac Office [Tom_Haapanen_2] [Tom_Haapanen_2] 2007-07-11
4943-4948 Unassigned
munin 4949 tcp Munin Graphing Framework [Jimmy_Olsen] [Jimmy_Olsen] 2010-12-24
munin 4949 udp Munin Graphing Framework [Jimmy_Olsen] [Jimmy_Olsen] 2010-12-24
sybasesrvmon 4950 tcp Sybase Server Monitor [Chris_Irie] [Chris_Irie] 2008-03-26
sybasesrvmon 4950 udp Sybase Server Monitor [Chris_Irie] [Chris_Irie] 2008-03-26
pwgwims 4951 tcp PWG WIMS [Ira_McDonald] [Ira_McDonald] 2005-12
pwgwims 4951 udp PWG WIMS [Ira_McDonald] [Ira_McDonald] 2005-12
sagxtsds 4952 tcp SAG Directory Server [Michael_Chirila] [Michael_Chirila] 2006-01
sagxtsds 4952 udp SAG Directory Server [Michael_Chirila] [Michael_Chirila] 2006-01
dbsyncarbiter 4953 tcp Synchronization Arbiter [Dave_Neudoerffer_2] [Dave_Neudoerffer_2] 2009-11-18
4953 udp Reserved
4954-4968 Unassigned Known UNAUTHORIZED USE: port 4967
ccss-qmm 4969 tcp CCSS QMessageMonitor
ccss-qmm 4969 udp CCSS QMessageMonitor
ccss-qsm 4970 tcp CCSS QSystemMonitor [David_Young] [David_Young] 2006-01
ccss-qsm 4970 udp CCSS QSystemMonitor [David_Young] [David_Young] 2006-01
burp 4971 tcp BackUp and Restore Program [Marat_Khalili] [Marat_Khalili] 2017-08-23
4971 udp Reserved
4972-4979 Unassigned
ctxs-vpp 4980 udp Citrix Virtual Path [Citrix_Systems] [Rohith_Ramkumar] 2015-04-17
4980 tcp Reserved
4981-4982 Unassigned
4983 Unassigned 2005-12-22
webyast 4984 tcp WebYast [Federico_Lucifredi] [Federico_Lucifredi] 2009-09-25
4984 udp Reserved
gerhcs 4985 tcp GER HC Standard [Roger_Ward] [Roger_Ward] 2009-09-25
4985 udp Reserved
mrip 4986 tcp Model Railway Interface Program [Howard_Amos] [Howard_Amos] 2006-04
mrip 4986 udp Model Railway Interface Program [Howard_Amos] [Howard_Amos] 2006-04
smar-se-port1 4987 tcp SMAR Ethernet Port 1
smar-se-port1 4987 udp SMAR Ethernet Port 1
smar-se-port2 4988 tcp SMAR Ethernet Port 2 [Delcio_Prizon] [Delcio_Prizon]
smar-se-port2 4988 udp SMAR Ethernet Port 2 [Delcio_Prizon] [Delcio_Prizon]
parallel 4989 tcp Parallel for GAUSS (tm) [Matthew_Ford] [Matthew_Ford] 2003-03
parallel 4989 udp Parallel for GAUSS (tm) [Matthew_Ford] [Matthew_Ford] 2003-03
busycal 4990 tcp BusySync Calendar Synch. Protocol [David_Riggle] [David_Riggle] 2008-01-07 Defined TXT keys: Proprietary
busycal 4990 udp BusySync Calendar Synch. Protocol [David_Riggle] [David_Riggle] 2008-01-07 Defined TXT keys: Proprietary
vrt 4991 tcp VITA Radio Transport [Sam_Bretheim] [Sam_Bretheim] 2009-01-08
vrt 4991 udp VITA Radio Transport [Sam_Bretheim] [Sam_Bretheim] 2009-01-08
4992-4998 Unassigned
hfcs-manager 4999 tcp HFSQL Client/Server Database Engine Manager [PC_SOFT] [Jerome_AERTS_2] 2006-03-02 2014-02-02
hfcs-manager 4999 udp HFSQL Client/Server Database Engine Manager [PC_SOFT] [Jerome_AERTS_2] 2006-03-02 2014-02-02
ivocalize 5049 tcp iVocalize Web Conference [Bryan_Vergato] [Bryan_Vergato] 2006-05
ivocalize 5049 udp iVocalize Web Conference [Bryan_Vergato] [Bryan_Vergato] 2006-05
5147-5149 Unassigned
caaclang2 5249 tcp CA AC Lang Service [Gabriel_Kalmar] [Gabriel_Kalmar] 2008-02-19
caaclang2 5249 udp CA AC Lang Service [Gabriel_Kalmar] [Gabriel_Kalmar] 2008-02-19
stuns 5349 tcp Session Traversal Utilities for NAT (STUN) port [IESG] [IETF_Chair] 2019-03-28 [RFC8489]
stuns 5349 udp STUN over DTLS [IESG] [IETF_Chair] 2014-07-03 [RFC7350] This service name was initially created by [RFC5389].
turns 5349 tcp TURN over TLS 2019-08-02 [RFC8656]
turns 5349 udp TURN over DTLS [IESG] [IETF_Chair] 2019-08-02 [RFC7350] This service name was initially created by [RFC8656].
stun-behaviors 5349 tcp STUN Behavior Discovery over TLS [RFC5780]
stun-behaviors 5349 udp Reserved for a future enhancement of STUN-BEHAVIOR [RFC5780]
5446-5449 Unassigned
5476-5499 Unassigned
5544-5549 Unassigned
5749 Unassigned
tal-pod 6149 tcp tal-pod [Steven_Loomis] [Steven_Loomis]
tal-pod 6149 udp tal-pod [Steven_Loomis] [Steven_Loomis]
6348-6349 Unassigned
6490-6499 Unassigned
apc-6549 6549 tcp APC 6549 [American_Power_Conve] [American_Power_Conve]
apc-6549 6549 udp APC 6549 [American_Power_Conve] [American_Power_Conve]
6843-6849 Unassigned
7479-7490 Unassigned
telops-lmd 7491 tcp telops-lmd [David_Spencer] [David_Spencer]
telops-lmd 7491 udp telops-lmd [David_Spencer] [David_Spencer]
7492-7499 Unassigned Known Unauthorized Use on port 7499
nls-tl 7549 tcp Network Layer Signaling Transport Layer [Melinda_Shore] [Melinda_Shore] 2006-05
nls-tl 7549 udp Network Layer Signaling Transport Layer [Melinda_Shore] [Melinda_Shore] 2006-05
7649-7662 Unassigned
8149 tcp Reserved
eor-game 8149 udp Edge of Reality game data [Sky_Schulz] [Sky_Schulz] 2011-05-09
8449 Unassigned
8475-8499 Unassigned
8734-8749 Unassigned
9027-9049 Unassigned
9446-9449 Unassigned
9451-9499 Unassigned
9748-9749 Unassigned
9926-9949 Unassigned
10024-10049 Unassigned
10444-10499 Unassigned
10549-10630 Unassigned
11490-11599 Unassigned
vrts-tdd 14149 tcp Veritas Traffic Director [Sameer_Deokule] [Sameer_Deokule] 2002-03
vrts-tdd 14149 udp Veritas Traffic Director [Sameer_Deokule] [Sameer_Deokule] 2002-03
14155-14249 Unassigned
14415-14499 Unassigned

Contact Information

ID Name Organization Contact URI Last Updated
[American_Power_Conve] American Power Conversion mailto:ports&apcc.com 2002-02
[Bryan_Vergato] Bryan Vergato mailto:iana&ivocalize.com 2006-05
[Chris_Irie] Chris Irie mailto:irie&sybase.com 2008-03-26
[Cisco_Systems_3] Cisco Systems mailto:eckert&cisco.com 2014-06-06
[Citrix_Systems] Citrix Systems mailto:CloudBridge-PM&citrix.com 2015-04-17
[Dave_Neudoerffer_2] Dave Neudoerffer mailto:dave.neudoerffer&sybase.com 2009-11-18
[David_Riggle] David Riggle mailto:dave&busymac.com 2008-01-07
[David_Spencer] David Spencer mailto:dspencer&telops.com
[David_Young] David Young mailto:david.young&ccsseurope.co.uk 2006-01
[Delcio_Prizon] Delcio Prizon mailto:dprizon&smar.com.br
[Federico_Lucifredi] Federico Lucifredi mailto:flucifredi&novell.com 2009-09-25
[Gabriel_Kalmar] Gabriel Kalmar mailto:kalga01&ca.com 2008-03-06
[Howard_Amos] Howard Amos mailto:amos&ccww.co.uk 2006-04
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[Ira_McDonald] Ira McDonald mailto:imcdonald&sharplabs.com 2005-12
[Jerome_AERTS_2] Jerome AERTS PC SOFT mailto:jae&pcsoft.fr 2014-02-02
[Jerry_Whitaker] Jerry Whitaker mailto:jwhitaker&atsc.org 2008-10-27
[Jimmy_Olsen] Jimmy Olsen mailto:jo&redpill-linpro.com 2010-12-24
[Marat_Khalili] Marat Khalili mailto:qm2k&yandex.ru 2017-08-23
[Matthew_Ford] Matthew Ford mailto:Matthew.Ford&forward.com.au 2003-03
[Melinda_Shore] Melinda Shore mailto:mshore&cisco.com 2006-05
[Michael_Chirila] Michael Chirila mailto:Michael.Chirila&softwareag.com 2006-01
[PC_SOFT] PC SOFT mailto:jae&pcsoft.fr 2014-02-02
[Roger_Ward] Roger Ward mailto:roger.ward&ger911.com 2009-09-25
[Rohith_Ramkumar] Rohith Ramkumar Citrix Systems mailto:CloudBridge-PM&citrix.com 2015-04-17
[Sam_Bretheim] Sam Bretheim mailto:info&opensigint.org 2009-01-08
[Sameer_Deokule] Sameer Deokule mailto:sameer.deokule&veritas.com 2002-03
[Sky_Schulz] Sky Schulz mailto:sky&edgeofreality.com 2011-05-09
[Steven_Loomis] Steven Loomis mailto:srl&taligent.com
[Toerless_Eckert_2] Toerless Eckert Cisco Systems mailto:eckert&cisco.com 2014-06-06
[Tom_Haapanen_2] Tom Haapanen mailto:tomh&equitrac.com 2007-07-11