Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2024-03-18
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
contclientms 4665 tcp Container Client Message Service [Bruce_Thompson] [Bruce_Thompson] 2006-02
contclientms 4665 udp Container Client Message Service [Bruce_Thompson] [Bruce_Thompson] 2006-02
eportcomm 4666 tcp E-Port Message Service
eportcomm 4666 udp E-Port Message Service
mmacomm 4667 tcp MMA Comm Services
mmacomm 4667 udp MMA Comm Services
mmaeds 4668 tcp MMA EDS Service [Robert_Shaffer] [Robert_Shaffer] 2006-02
mmaeds 4668 udp MMA EDS Service [Robert_Shaffer] [Robert_Shaffer] 2006-02
eportcommdata 4669 tcp E-Port Data Service [Robert_Shaffer] [Robert_Shaffer] 2006-02
eportcommdata 4669 udp E-Port Data Service [Robert_Shaffer] [Robert_Shaffer] 2006-02
light 4670 tcp Light packets transfer protocol [Adam_Golovenko] [Adam_Golovenko] 2006-10
light 4670 udp Light packets transfer protocol [Adam_Golovenko] [Adam_Golovenko] 2006-10
acter 4671 tcp Bull RSF action server [Christian_Caudrelier] [Christian_Caudrelier] 2006-02
acter 4671 udp Bull RSF action server [Christian_Caudrelier] [Christian_Caudrelier] 2006-02
rfa 4672 tcp remote file access server
rfa 4672 udp remote file access server
cxws 4673 tcp CXWS Operations [Phil_Abercrombie] [Phil_Abercrombie] 2005-08
cxws 4673 udp CXWS Operations [Phil_Abercrombie] [Phil_Abercrombie] 2005-08
appiq-mgmt 4674 tcp AppIQ Agent Management [Phil_Abercrombie] [Phil_Abercrombie] 2005-08
appiq-mgmt 4674 udp AppIQ Agent Management [Phil_Abercrombie] [Phil_Abercrombie] 2005-08
dhct-status 4675 tcp BIAP Device Status
dhct-status 4675 udp BIAP Device Status
dhct-alerts 4676 tcp BIAP Generic Alert [Louis_Slothouber] [Louis_Slothouber] 2005-08
dhct-alerts 4676 udp BIAP Generic Alert [Louis_Slothouber] [Louis_Slothouber] 2005-08
bcs 4677 tcp Business Continuity Servi [Siew_Sim] [Siew_Sim] 2005-08
bcs 4677 udp Business Continuity Servi [Siew_Sim] [Siew_Sim] 2005-08
traversal 4678 tcp boundary traversal [Kevin_Lu] [Kevin_Lu] 2005-08
traversal 4678 udp boundary traversal [Kevin_Lu] [Kevin_Lu] 2005-08
mgesupervision 4679 tcp MGE UPS Supervision
mgesupervision 4679 udp MGE UPS Supervision
mgemanagement 4680 tcp MGE UPS Management [Lecuivre_J] [Lecuivre_J] 2005-08
mgemanagement 4680 udp MGE UPS Management [Lecuivre_J] [Lecuivre_J] 2005-08
parliant 4681 tcp Parliant Telephony System [Colin_Henein] [Colin_Henein] 2005-08
parliant 4681 udp Parliant Telephony System [Colin_Henein] [Colin_Henein] 2005-08
finisar 4682 tcp finisar [Christina_Mercier] [Christina_Mercier] 2005-08
finisar 4682 udp finisar [Christina_Mercier] [Christina_Mercier] 2005-08
spike 4683 tcp Spike Clipboard Service [Scott_Herscher] [Scott_Herscher] 2005-08
spike 4683 udp Spike Clipboard Service [Scott_Herscher] [Scott_Herscher] 2005-08
rfid-rp1 4684 tcp RFID Reader Protocol 1.0 [Michael_Mealling_2] [Michael_Mealling_2] 2005-08
rfid-rp1 4684 udp RFID Reader Protocol 1.0 [Michael_Mealling_2] [Michael_Mealling_2] 2005-08
autopac 4685 tcp Autopac Protocol [Peter_Hallenbeck] [Peter_Hallenbeck] 2005-08
autopac 4685 udp Autopac Protocol [Peter_Hallenbeck] [Peter_Hallenbeck] 2005-08
msp-os 4686 tcp Manina Service Protocol [Markus_Nix] [Markus_Nix] 2005-08
msp-os 4686 udp Manina Service Protocol [Markus_Nix] [Markus_Nix] 2005-08
nst 4687 tcp Network Scanner Tool FTP [Mala_Bhat] [Mala_Bhat] 2005-08
nst 4687 udp Network Scanner Tool FTP [Mala_Bhat] [Mala_Bhat] 2005-08
mobile-p2p 4688 tcp Mobile P2P Service [Hanz_Hager] [Hanz_Hager] 2008-12-04
mobile-p2p 4688 udp Mobile P2P Service [Hanz_Hager] [Hanz_Hager] 2008-12-04
altovacentral 4689 tcp Altova DatabaseCentral [Altova] [Altova] 2005-08
altovacentral 4689 udp Altova DatabaseCentral [Altova] [Altova] 2005-08
prelude 4690 tcp Prelude IDS message proto [Yoann_Vandoorselaere] [Yoann_Vandoorselaere] 2005-08
prelude 4690 udp Prelude IDS message proto [Yoann_Vandoorselaere] [Yoann_Vandoorselaere] 2005-08
mtn 4691 tcp monotone Netsync Protocol [Thomas_Keller] [Thomas_Keller] 2010-12-22
mtn 4691 udp monotone Netsync Protocol [Thomas_Keller] [Thomas_Keller] 2010-12-22
conspiracy 4692 tcp Conspiracy messaging [Jens_Edlund] [Jens_Edlund] 2005-08
conspiracy 4692 udp Conspiracy messaging [Jens_Edlund] [Jens_Edlund] 2005-08
4693-4699 Unassigned
netxms-agent 4700 tcp NetXMS Agent
netxms-agent 4700 udp NetXMS Agent
netxms-mgmt 4701 tcp NetXMS Management
netxms-mgmt 4701 udp NetXMS Management
netxms-sync 4702 tcp NetXMS Server Synchronization [Victor_Kirhenshtein] [Victor_Kirhenshtein] 2006-07
netxms-sync 4702 udp NetXMS Server Synchronization [Victor_Kirhenshtein] [Victor_Kirhenshtein] 2006-07
npqes-test 4703 tcp Network Performance Quality Evaluation System Test Service [Zhengli] [Zhengli] 2010-06-28
4703 udp Reserved
assuria-ins 4704 tcp Assuria Insider [Nick_Connor] [Nick_Connor] 2010-06-30
4704 udp Reserved
4705-4710 Unassigned
trinity-dist 4711 tcp Trinity Trust Network Node Communication [P3KI_GmbH] [Gregor_Jehle] 2017-01-12
trinity-dist 4711 udp Trinity Trust Network Node Communication [P3KI_GmbH] [Gregor_Jehle] 2017-01-12
trinity-dist 4711 sctp Trinity Trust Network Node Communication [P3KI_GmbH] [Gregor_Jehle] 2017-01-12
4712-4724 Unassigned
truckstar 4725 tcp TruckStar Service [Brian_Toothill] [Brian_Toothill] 2010-10-15
truckstar 4725 udp TruckStar Service [Brian_Toothill] [Brian_Toothill] 2010-10-15
4726 tcp Reserved
a26-fap-fgw 4726 udp A26 (FAP-FGW) [David_Ott] [David_Ott] 2010-10-15
fcis 4727 tcp F-Link Client Information Service
fcis-disc 4727 udp F-Link Client Information Service Discovery [Makoto_Zukawa] [Makoto_Zukawa] 2010-10-15
capmux 4728 tcp CA Port Multiplexer [Nigel_Groves] [Nigel_Groves] 2006-06
capmux 4728 udp CA Port Multiplexer [Nigel_Groves] [Nigel_Groves] 2006-06
4729 tcp Reserved
gsmtap 4729 udp GSM Interface Tap [Harald_Welte] [Harald_Welte] 2009-01-16
gearman 4730 tcp Gearman Job Queue System [Eric_Day] [Eric_Day] 2009-01-16
gearman 4730 udp Gearman Job Queue System [Eric_Day] [Eric_Day] 2009-01-16
remcap 4731 tcp Remote Capture Protocol [Marc_Donner] [Marc_Donner] 2009-01-16
4731 udp Reserved
4732 tcp Reserved
ohmtrigger 4732 udp OHM server trigger [Franck_Lefevre] [Franck_Lefevre] 2009-11-18
resorcs 4733 tcp RES Orchestration Catalog Services [Bob_Janssen_2] [Bob_Janssen_2] 2009-11-18
4733 udp Reserved
4734-4736 Unassigned
ipdr-sp 4737 tcp IPDR/SP [Ken_Sarno] [Ken_Sarno] 2005-08
ipdr-sp 4737 udp IPDR/SP [Ken_Sarno] [Ken_Sarno] 2005-08
solera-lpn 4738 tcp SoleraTec Locator [Mark_Armstrong] [Mark_Armstrong] 2005-12
solera-lpn 4738 udp SoleraTec Locator [Mark_Armstrong] [Mark_Armstrong] 2005-12
ipfix 4739 tcp IP Flow Info Export [Nevil_Brownlee] [Nevil_Brownlee] 2005-08
ipfix 4739 udp IP Flow Info Export [Nevil_Brownlee] [Nevil_Brownlee] 2005-08
ipfix 4739 sctp IP Flow Info Export [Nevil_Brownlee] [Nevil_Brownlee] 2006-01
ipfixs 4740 tcp ipfix protocol over TLS [Nevil_Brownlee] [Nevil_Brownlee] 2006-10
ipfixs 4740 sctp ipfix protocol over DTLS [Nevil_Brownlee] [Nevil_Brownlee] 2006-10
ipfixs 4740 udp ipfix protocol over DTLS [Nevil_Brownlee] [Nevil_Brownlee] 2006-10

Contact Information

ID Name Organization Contact URI Last Updated
[Adam_Golovenko] Adam Golovenko mailto:golovenko&gmail.com 2006-10
[Altova] Altova mailto:has&altova.com 2005-08
[Bob_Janssen_2] Bob Janssen mailto:b.janssen&ressoftware.com 2009-11-18
[Brian_Toothill] Brian Toothill mailto:brian.toothill&touchstar.co.uk 2010-10-15
[Bruce_Thompson] Bruce Thompson mailto:brucet&actioninformationsystems.com 2006-02
[Christian_Caudrelier] Christian Caudrelier mailto:Christian.Caudrelier&bull.net 2006-02
[Christina_Mercier] Christina Mercier mailto:christina.mercier&finisar.com 2005-08
[Colin_Henein] Colin Henein mailto:iana&cmh.parliant.com 2005-08
[David_Ott] David Ott mailto:dott&qualcomm.com 2010-10-15
[Eric_Day] Eric Day mailto:eday&oddments.org 2009-01-16
[Franck_Lefevre] Franck Lefevre mailto:franck.lefevre&digitalairways.com 2009-11-18
[Gregor_Jehle] Gregor Jehle mailto:hadez&p3ki.com 2017-01-12
[Hanz_Hager] Hanz Hager mailto:Hanz.Hager&comhem.se 2008-12-04
[Harald_Welte] Harald Welte mailto:laforge&gnumonks.org 2009-01-16
[Jens_Edlund] Jens Edlund mailto:edlund&speech.kth.se 2005-08
[Ken_Sarno] Ken Sarno mailto:kensarno&insightbb.com 2005-08
[Kevin_Lu] Kevin Lu mailto:kevinlu&micromethod.com 2005-08
[Lecuivre_J] Lecuivre J mailto:software.team&mgeups.com 2005-08
[Louis_Slothouber] Louis Slothouber mailto:lpslot&biap.com 2005-08
[Makoto_Zukawa] Makoto Zukawa mailto:zukawa&jp.fujitsu.com 2010-10-15
[Mala_Bhat] Mala Bhat mailto:bmala&ssdi.sharp.co.in 2005-08
[Marc_Donner] Marc Donner mailto:mail&poweraudio.de 2009-01-16
[Mark_Armstrong] Mark Armstrong mailto:Mark.Armstrong&soleratec.com 2005-12
[Markus_Nix] Markus Nix mailto:mnix&docuverse.de 2005-08
[Michael_Mealling_2] Michael Mealling mailto:michael&refactored-networks.com 2005-08
[Nevil_Brownlee] Nevil Brownlee mailto:n.brownlee&auckland.ac.nz 2006-10
[Nick_Connor] Nick Connor mailto:nickc&assuria.com 2010-06-30
[Nigel_Groves] Nigel Groves mailto:nigel.groves&ca.com 2006-06
[P3KI_GmbH] P3KI GmbH mailto:iana&p3ki.com 2017-01-12
[Peter_Hallenbeck] Peter Hallenbeck mailto:pete&consumertechnologiesgroup.com 2005-08
[Phil_Abercrombie] Phil Abercrombie mailto:phil.abercrombie&appiq.com 2005-08
[Robert_Shaffer] Robert Shaffer mailto:bob.shaffer&micmod.com 2006-02
[Scott_Herscher] Scott Herscher mailto:scott&porchdogsoft.com 2005-08
[Siew_Sim] Siew Sim mailto:ssim&asempra.com 2005-08
[Thomas_Keller] Thomas Keller mailto:me&thomaskeller.biz 2010-12-22
[Victor_Kirhenshtein] Victor Kirhenshtein mailto:victor&opticom.lv 2006-07
[Yoann_Vandoorselaere] Yoann Vandoorselaere mailto:yoann&prelude-ids.org 2005-08
[Zhengli] Zhengli mailto:std&iwncomm.com 2010-06-28