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
qsnet-nucl 4358 tcp QSNet Nucleus [Neer_Kleinman] [Neer_Kleinman]
qsnet-nucl 4358 udp QSNet Nucleus [Neer_Kleinman] [Neer_Kleinman]
omabcastltkm 4359 tcp OMA BCAST Long-Term Key Messages [Frank_Hartung] [Frank_Hartung] 2007-09-07
omabcastltkm 4359 udp OMA BCAST Long-Term Key Messages [Frank_Hartung] [Frank_Hartung] 2007-09-07
matrix-vnet 4360 tcp Matrix VNet Communication Protocol

IANA assigned this well-formed service name as a replacement for "matrix_vnet".
[Rehan_Mahmood] [Rehan_Mahmood] 2009-03-18
matrix_vnet 4360 tcp Matrix VNet Communication Protocol [Rehan_Mahmood] [Rehan_Mahmood] 2009-03-18 This entry is an alias to "matrix-vnet". This entry is now historic, not usable for use with many common service discovery mechanisms.
4360 udp Reserved
4361 tcp Reserved
nacnl 4361 udp NavCom Discovery and Control Port [Yilei_Jia] [Yilei_Jia] 2009-03-18
4362 tcp Reserved
afore-vdp-disc 4362 udp AFORE vNode Discovery protocol [Michael_Richardson] [Michael_Richardson] 2011-02-08
4363-4365 Unassigned
shadowstream 4366 udp ShadowStream System [StorageCraft_Technology_Corporation] [David_McConkie] 2014-12-17
4366 tcp Reserved
4367 Unassigned
wxbrief 4368 tcp WeatherBrief Direct [Kim_Alan_Waggoner] [Kim_Alan_Waggoner] 2006-11
wxbrief 4368 udp WeatherBrief Direct [Kim_Alan_Waggoner] [Kim_Alan_Waggoner] 2006-11
epmd 4369 tcp Erlang Port Mapper Daemon [Erlang] [Erlang]
epmd 4369 udp Erlang Port Mapper Daemon [Erlang] [Erlang]
elpro-tunnel 4370 tcp ELPRO V2 Protocol Tunnel

IANA assigned this well-formed service name as a replacement for "elpro_tunnel".
[Harry_Courtice] [Harry_Courtice] 2008-04-14
elpro_tunnel 4370 tcp ELPRO V2 Protocol Tunnel [Harry_Courtice] [Harry_Courtice] 2008-04-14 This entry is an alias to "elpro-tunnel". This entry is now historic, not usable for use with many common service discovery mechanisms.
elpro-tunnel 4370 udp ELPRO V2 Protocol Tunnel

IANA assigned this well-formed service name as a replacement for "elpro_tunnel".
[Harry_Courtice] [Harry_Courtice] 2008-04-14
elpro_tunnel 4370 udp ELPRO V2 Protocol Tunnel [Harry_Courtice] [Harry_Courtice] 2008-04-14 This entry is an alias to "elpro-tunnel". This entry is now historic, not usable for use with many common service discovery mechanisms.
l2c-control 4371 tcp LAN2CAN Control [Phil_Tolson] [Phil_Tolson] 2008-07-07 Modified: 21 January 2010
l2c-disc 4371 udp LAN2CAN Discovery [Phil_Tolson] [Phil_Tolson] 2010-01-21
l2c-data 4372 tcp LAN2CAN Data [Phil_Tolson] [Phil_Tolson] 2008-07-07 Modified: 21 January 2010
l2c-data 4372 udp LAN2CAN Data [Phil_Tolson] [Phil_Tolson] 2010-01-21
remctl 4373 tcp Remote Authenticated Command Service [Russ_Allbery] [Russ_Allbery] 2007-08-30
remctl 4373 udp Remote Authenticated Command Service [Russ_Allbery] [Russ_Allbery] 2007-08-30
psi-ptt 4374 tcp PSI Push-to-Talk Protocol [Frank_B] [Frank_B] 2008-07-17
4374 udp Reserved
tolteces 4375 tcp Toltec EasyShare [Joon_Radley_2] [Joon_Radley_2] 2008-10-21
tolteces 4375 udp Toltec EasyShare [Joon_Radley_2] [Joon_Radley_2] 2008-10-21
bip 4376 tcp BioAPI Interworking [Jean_Paul_Lemaire] [Jean_Paul_Lemaire] 2007-07-05
bip 4376 udp BioAPI Interworking [Jean_Paul_Lemaire] [Jean_Paul_Lemaire] 2007-07-05
cp-spxsvr 4377 tcp Cambridge Pixel SPx Server
cp-spxsvr 4377 udp Cambridge Pixel SPx Server
cp-spxdpy 4378 tcp Cambridge Pixel SPx Display [Richard_Warren] [Richard_Warren] 2007-07-05
cp-spxdpy 4378 udp Cambridge Pixel SPx Display [Richard_Warren] [Richard_Warren] 2007-07-05
ctdb 4379 tcp CTDB [Ronnie_Sahlberg] [Ronnie_Sahlberg] 2007-07-05
ctdb 4379 udp CTDB [Ronnie_Sahlberg] [Ronnie_Sahlberg] 2007-07-05
4380-4388 Unassigned
xandros-cms 4389 tcp Xandros Community Management Service [Stephen_M_Webb] [Stephen_M_Webb] 2007-05
xandros-cms 4389 udp Xandros Community Management Service [Stephen_M_Webb] [Stephen_M_Webb] 2007-05
wiegand 4390 tcp Physical Access Control [Scott_Guthery_2] [Scott_Guthery_2] 2008-08-25
wiegand 4390 udp Physical Access Control [Scott_Guthery_2] [Scott_Guthery_2] 2008-08-25
apwi-imserver 4391 tcp American Printware IMServer Protocol [Lech_Lakomy] [Lech_Lakomy] 2009-02-12
4391 udp Reserved
apwi-rxserver 4392 tcp American Printware RXServer Protocol [Lech_Lakomy] [Lech_Lakomy] 2009-02-12
4392 udp Reserved
apwi-rxspooler 4393 tcp American Printware RXSpooler Protocol [Lech_Lakomy] [Lech_Lakomy] 2009-02-12
4393 udp Reserved
4394 tcp Reserved
apwi-disc 4394 udp American Printware Discovery [Lech_Lakomy] [Lech_Lakomy] 2009-02-12
omnivisionesx 4395 tcp OmniVision communication for Virtual environments [Vacquier_Serge] [Vacquier_Serge] 2009-02-12
omnivisionesx 4395 udp OmniVision communication for Virtual environments [Vacquier_Serge] [Vacquier_Serge] 2009-02-12
fly 4396 tcp Fly Object Space [Nigel_Warren] [Nigel_Warren] 2009-02-12
4396 udp Reserved
4397-4399 Unassigned
ds-srv 4400 tcp ASIGRA Services [David_Farajun] [David_Farajun] 2004-11
ds-srv 4400 udp ASIGRA Services [David_Farajun] [David_Farajun] 2004-11
ds-srvr 4401 tcp ASIGRA Televaulting DS-System Service
ds-srvr 4401 udp ASIGRA Televaulting DS-System Service
ds-clnt 4402 tcp ASIGRA Televaulting DS-Client Service
ds-clnt 4402 udp ASIGRA Televaulting DS-Client Service
ds-user 4403 tcp ASIGRA Televaulting DS-Client Monitoring/Management
ds-user 4403 udp ASIGRA Televaulting DS-Client Monitoring/Management
ds-admin 4404 tcp ASIGRA Televaulting DS-System Monitoring/Management
ds-admin 4404 udp ASIGRA Televaulting DS-System Monitoring/Management
ds-mail 4405 tcp ASIGRA Televaulting Message Level Restore service
ds-mail 4405 udp ASIGRA Televaulting Message Level Restore service
ds-slp 4406 tcp ASIGRA Televaulting DS-Sleeper Service [Andrei_Litvinn] [Andrei_Litvinn] 2005-01
ds-slp 4406 udp ASIGRA Televaulting DS-Sleeper Service [Andrei_Litvinn] [Andrei_Litvinn] 2005-01
nacagent 4407 tcp Network Access Control Agent [ITGroup] [ITGroup] 2008-06-30
4407 udp Reserved
slscc 4408 tcp SLS Technology Control Centre [Steven_Sweeting] [Steven_Sweeting] 2008-01-28
4408 udp Reserved
netcabinet-com 4409 tcp Net-Cabinet comunication [Ian_Manning_2] [Ian_Manning_2] 2009-12-16
4409 udp Reserved
itwo-server 4410 tcp RIB iTWO Application Server [Kristean_Heisler_2] [Kristean_Heisler_2] 2009-12-16
4410 udp Reserved
found 4411 tcp Found Messaging Protocol [Found_Software] [John_Mitchell] 2012-04-11 Defined TXT keys: id, key
4411 udp Reserved
4412 tcp Reserved
smallchat 4412 udp SmallChat [Valentino_Giudice] [Valentino_Giudice] 2015-08-18
avi-nms 4413 tcp AVI Systems NMS [AVI_Systems] [Dave_Hatz] 2015-09-18
avi-nms-disc 4413 udp AVI Systems NMS [AVI_Systems] [Dave_Hatz] 2015-09-18
updog 4414 tcp Updog Monitoring and Status Framework [Egon_Technologies_LLC] [James_Downs] 2015-10-05
4414 udp Reserved
brcd-vr-req 4415 tcp Brocade Virtual Router Request [Brocade_Communications_Systems] [Nick_Carter] 2015-11-17
4415 udp Reserved
pjj-player 4416 tcp PJJ Media Player [PJJ_Productions_Inc] [Bruno_Frechette] 2015-11-18
pjj-player-disc 4416 udp PJJ Media Player discovery [PJJ_Productions_Inc] [Bruno_Frechette] 2015-11-18
workflowdir 4417 tcp Workflow Director Communication [WfDir] [Brian_Doyle] 2015-12-11
4417 udp Reserved
4418 tcp Reserved
axysbridge 4418 udp AXYS communication protocol [Duran_Audio_B.V.] [Gerald_van_Beuningen] 2016-03-14
cbp 4419 tcp Colnod Binary Protocol [Colsys_s.r.o.] [Jiri_Merth] 2016-03-23
4419 udp Reserved
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

Contact Information

ID Name Organization Contact URI Last Updated
[Amber_Huffman] Amber Huffman mailto:amber.huffman&intel.com 2018-03-27
[Andrei_Litvinn] Andrei Litvinn mailto:support&asigra.com 2005-01
[AVI_Systems] AVI Systems mailto:dave.hatz&avisystems.com 2015-09-18
[Brian_Doyle] Brian Doyle mailto:bd&wfdir.com 2015-12-11
[Brocade_Communications_Systems] Brocade Communications Systems mailto:ncarter&brocade.com 2015-11-17
[Bruno_Frechette] Bruno Frechette PJJ Productions Inc. mailto:bruno&pjjproductions.com 2015-11-18
[Colsys_s.r.o.] Colsys s.r.o. mailto:jiri.merth&colsys.cz 2016-03-23
[Dave_Hatz] Dave Hatz mailto:dave.hatz&avisystems.com 2015-09-18
[David_Farajun] David Farajun mailto:dfarajun&asigra.com 2004-11
[David_McConkie] David McConkie StorageCraft Technology Corporation mailto:dave.mcconkie&storagecraft.com 2014-12-17
[Duran_Audio_B.V.] Duran Audio B.V. mailto:info&duran-audio.com 2016-03-14
[Egon_Technologies_LLC] Egon Technologies, LLC mailto:james.downs&egontech.com 2015-10-05
[Erlang] Erlang/OTP support mailto:epmd&erix.ericsson.se 2004-12
[Found_Software] Found Software, Inc. mailto:john&foundapp.com 2012-04-11
[Frank_B] Frank Bredenbröcker mailto:fbredenbroecker&psi.de 2008-07-17
[Frank_Hartung] Frank Hartung mailto:Frank.Hartung&ericsson.com 2007-09-07
[Gerald_van_Beuningen] Gerald van Beuningen mailto:gerald.van.beuningen&duran-audio.com 2016-03-14
[Harry_Courtice] Harry Courtice mailto:harry.courtice&elprotech.com 2008-04-14
[ITGroup] ITGroup mailto:itgroup&stillsecure.com 2008-06-30
[Ian_Manning_2] Ian Manning mailto:ian&baycastle.co.uk 2009-12-16
[James_Downs] James Downs mailto:james.downs&egontech.com 2015-10-05
[Jean_Paul_Lemaire] Jean-Paul Lemaire mailto:jean-paul.lemaire&univ-paris-diderot.fr 2007-07-05
[Jiri_Merth] Jiri Merth mailto:jiri.merth&colsys.cz 2016-03-23
[John_Mitchell] John Mitchell Found Software, Inc. mailto:john&foundapp.com 2012-04-11
[Joon_Radley_2] Joon Radley mailto:joon&toltec.co.za
mailto:support&toltec.co.za
2008-10-21
[Kim_Alan_Waggoner] Kim Alan Waggoner mailto:kimw&weatherbank.com 2006-11
[Kristean_Heisler_2] Kristean Heisler mailto:Kristean.Heisler&rib-software.com 2009-12-16
[Lech_Lakomy] Lech Lakomy mailto:llakomy&apwi.com 2009-02-12
[Michael_Richardson] Michael Richardson mailto:mcr&sandelman.ca 2011-02-08
[Neer_Kleinman] Neer Kleinman mailto:neer&qsr.co.il
[Nick_Carter] Nick Carter mailto:ncarter&brocade.com 2015-11-17
[Nigel_Warren] Nigel Warren mailto:info&flyobjectspace.com 2009-02-12
[NVM_Express_Inc] NVM Express, Inc. mailto:admin&nvmexpress.org 2018-03-27
[Phil_Tolson] Phil Tolson mailto:philtolson&eaton.com 2010-01-21
[PJJ_Productions_Inc] PJJ Productions Inc. mailto:admin&pjjproductions.com 2015-11-18
[Rehan_Mahmood] Rehan Mahmood mailto:rehan&matrixmultimedia.co.uk 2009-03-18
[Richard_Warren] Richard Warren mailto:richard&cambridgepixel.com 2008-09-17
[Ronnie_Sahlberg] Ronnie Sahlberg mailto:ronniesahlberg&gmail.com 2007-07-05
[Russ_Allbery] Russ Allbery mailto:rra&stanford.edu 2007-08-30
[Scott_Guthery_2] Scott Guthery mailto:sguthery&hidcorp.com 2008-08-25
[Stephen_M_Webb] Stephen M. Webb mailto:stephenw&xandros.com 2007-05
[Steven_Sweeting] Steven Sweeting mailto:ssweeting&sls-technology.com 2008-01-28
[StorageCraft_Technology_Corporation] StorageCraft Technology Corporation mailto:dave.mcconkie&storagecraft.com 2014-12-17
[Vacquier_Serge] Vacquier Serge mailto:vacquier&systar.fr 2009-02-12
[Valentino_Giudice] mailto:valentino.giudice&vallauri.edu 2015-08-18
[WfDir] WfDir mailto:bd&wfdir.com 2015-12-11
[Yilei_Jia] Yilei Jia mailto:yjia&navcomtech.com 2009-03-18