Service Name and Transport Protocol Port Number Registry

Last Updated
2019-07-16
Expert(s)
TCP/UDP: Joe Touch; Eliot Lear, Allison Mankin, Markku Kojo, Kumiko Ono, Martin Stiemerling, 
Lars Eggert, Alexey Melnikov, Wes Eddy, Alexander Zimmermann, Brian Trammell, and Jana Iyengar
SCTP: Allison Mankin and 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 difference uses of these ranges is 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
cisco-sccp 2000 tcp Cisco SCCP [Dan_Wing] [Dan_Wing] 2003-11
cisco-sccp 2000 udp Cisco SCCp [Dan_Wing] [Dan_Wing] 2003-11
oi-2000 2364 tcp OI-2000 [Software_Horizons_In] [Software_Horizons_In]
oi-2000 2364 udp OI-2000 [Software_Horizons_In] [Software_Horizons_In]
taskmaster2000 2402 tcp TaskMaster 2000 Server
taskmaster2000 2402 udp TaskMaster 2000 Server
taskmaster2000 2403 tcp TaskMaster 2000 Web [Ed_Odjaghian] [Ed_Odjaghian]
taskmaster2000 2403 udp TaskMaster 2000 Web [Ed_Odjaghian] [Ed_Odjaghian]
orbix-locator 3075 tcp Orbix 2000 Locator
orbix-locator 3075 udp Orbix 2000 Locator
orbix-config 3076 tcp Orbix 2000 Config
orbix-config 3076 udp Orbix 2000 Config
orbix-loc-ssl 3077 tcp Orbix 2000 Locator SSL
orbix-loc-ssl 3077 udp Orbix 2000 Locator SSL
orbix-cfg-ssl 3078 tcp Orbix 2000 Locator SSL [Eric_Newcomer] [Eric_Newcomer]
orbix-cfg-ssl 3078 udp Orbix 2000 Locator SSL [Eric_Newcomer] [Eric_Newcomer]
d2000kernel 3119 tcp D2000 Kernel Port
d2000kernel 3119 udp D2000 Kernel Port
d2000webserver 3120 tcp D2000 Webserver Port [Tomas_Rajcan] [Tomas_Rajcan]
d2000webserver 3120 udp D2000 Webserver Port [Tomas_Rajcan] [Tomas_Rajcan]
officelink2000 3320 tcp Office Link 2000 [Mike_Balch] [Mike_Balch]
officelink2000 3320 udp Office Link 2000 [Mike_Balch] [Mike_Balch]
i-net-2000-npr 5069 tcp I/Net 2000-NPR [Chris_Megede] [Chris_Megede]
i-net-2000-npr 5069 udp I/Net 2000-NPR [Chris_Megede] [Chris_Megede]
entextxid 12000 tcp IBM Enterprise Extender SNA XID Exchange [Eugene_Cox] [Eugene_Cox]
entextxid 12000 udp IBM Enterprise Extender SNA XID Exchange [Eugene_Cox] [Eugene_Cox]
dnp 20000 tcp DNP [Michael_Thesing] [Michael_Thesing]
dnp 20000 udp DNP [Michael_Thesing] [Michael_Thesing]
microsan 20001 tcp MicroSAN [Thomas_E_Ludwig] [Thomas_E_Ludwig] 2004-02
microsan 20001 udp MicroSAN [Thomas_E_Ludwig] [Thomas_E_Ludwig] 2004-02
commtact-http 20002 tcp Commtact HTTP [Tomas_Svoboda] [Tomas_Svoboda] 2004-12
commtact-http 20002 udp Commtact HTTP [Tomas_Svoboda] [Tomas_Svoboda] 2004-12
commtact-https 20003 tcp Commtact HTTPS [Tomas_Svoboda] [Tomas_Svoboda] 2004-12
commtact-https 20003 udp Commtact HTTPS [Tomas_Svoboda] [Tomas_Svoboda] 2004-12
20004 Unassigned
openwebnet 20005 tcp OpenWebNet protocol for electric network [BTicino_S_p_A] [BTicino_S_p_A] 2008-04-09
openwebnet 20005 udp OpenWebNet protocol for electric network [BTicino_S_p_A] [BTicino_S_p_A] 2008-04-09
20006-20011 Unassigned
snapenetio 22000 tcp SNAPenetIO [Kevin_Kuhns] [Kevin_Kuhns]
snapenetio 22000 udp SNAPenetIO [Kevin_Kuhns] [Kevin_Kuhns]
a27-ran-ran 28119 udp A27 cdma2000 RAN Management [ThreeGPP_2] [Zhiming_Li] 2012-04-13
41798-42507 Unassigned Unauthorized Use Known on port 42000

People

ID Name Organization Contact URI Last Updated
[BTicino_S_p_A] BTicino S.p.A. mailto:admin-myopen&myopen-bticino.it 2008-04-09
[Chris_Megede] Chris Megede mailto:chris.megede&tac.com
[Dan_Wing] Dan Wing mailto:dwing&cisco.com 2015-10-08
[Ed_Odjaghian] Ed Odjaghian mailto:edo&datacap.com
[Eric_Newcomer] Eric Newcomer mailto:eric.newcomer&iona.com
[Eugene_Cox] Eugene Cox mailto:genecox&raleigh.ibm.com
[Kevin_Kuhns] Kevin Kuhns mailto:kkuhns&opto22.com
[Michael_Thesing] Michael Thesing mailto:michael.thesing&acsatlanta.com
[Mike_Balch] Mike Balch mailto:mbalch&teltone.com
[Software_Horizons_In] Software Horizons Inc. mailto:oi2000&shorizons.com
[Thomas_E_Ludwig] Thomas E. Ludwig mailto:tom.ludwig&zetera.com 2004-02
[ThreeGPP_2] 3GPP2 mailto:lizhiming&huawei.com 2012-01-11
[Tomas_Rajcan] Tomas Rajcan mailto:trajcan&ipesoft.sk
[Tomas_Svoboda] Tomas Svoboda mailto:svoboda&infima.cz 2004-12
[Zhiming_Li] Zhiming Li 3GPP2 mailto:lizhiming&huawei.com 2012-01-11