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
ndm-agent-port 43189 udp NDM-AGENT-PORT [Roman_Kriis] [Roman_Kriis]
ip-provision 43190 tcp IP-PROVISION [Roman_Kriis] [Roman_Kriis]
ip-provision 43190 udp IP-PROVISION [Roman_Kriis] [Roman_Kriis]
noit-transport 43191 tcp Reconnoiter Agent Data Transport [Theo_Schlossnagle] [Theo_Schlossnagle] 2009-05-19
43191 udp Reserved
43192-43209 Unassigned
shaperai 43210 tcp Shaper Automation Server Management [Shaper_Automation] [Yohann_Sulaiman] 2012-06-22
shaperai-disc 43210 udp Shaper Automation Server Management Discovery [Shaper_Automation] [Yohann_Sulaiman] 2012-06-22
43211-43437 Unassigned
ciscocsdb 43441 tcp Cisco NetMgmt DB Ports [Cisco_Systems] [Cisco_Systems] 2005-11
ciscocsdb 43441 udp Cisco NetMgmt DB Ports [Cisco_Systems] [Cisco_Systems] 2005-11
43442-44122 Unassigned
z-wave-tunnel 44123 tcp Z-Wave Secure Tunnel [Sigma_Designs_Inc] [Anders_Brandt_3] 2012-10-12 2015-06-26
44123 udp Reserved
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
44323 udp Unassigned "pcp" assignment withdrawn, moved to port 5351 per RFC6887
44446-44543 Unassigned Known UNAUTHORIZED USE: Ports 44515 & 44516
44601-44817 Unassigned
EtherNet-IP-2 44818 tcp EtherNet/IP messaging

IANA assigned this well-formed service name as a replacement for "EtherNet/IP-2".
[Brian_Batke_2] [Brian_Batke_2] New contact added for port 44818 on 2008-02-01
EtherNet/IP-2 44818 tcp EtherNet/IP messaging [Brian_Batke_2] [Brian_Batke_2] New contact added for port 44818 on 2008-02-01 This entry is an alias to "EtherNet-IP-2". This entry is now historic, not usable for use with many common service discovery mechanisms.
EtherNet-IP-2 44818 udp EtherNet/IP messaging

IANA assigned this well-formed service name as a replacement for "EtherNet/IP-2".
[Brian_Batke_2] [Brian_Batke_2] New contact added for port 44818 on 2008-02-01
EtherNet/IP-2 44818 udp EtherNet/IP messaging [Brian_Batke_2] [Brian_Batke_2] New contact added for port 44818 on 2008-02-01 This entry is an alias to "EtherNet-IP-2". This entry is now historic, not usable for use with many common service discovery mechanisms.
44819-44899 Unassigned
44901-44999 Unassigned
asmps 45001 tcp Nuance AutoStore Status Monitoring Protocol (secure data transfer) [Nuance_Communications_Inc4] [Andrew_Andrews] 2011-09-01 2017-04-26
45001 udp Reserved
45055-45513 Unassigned
cloudcheck 45514 tcp ASSIA CloudCheck WiFi Management System [ASSIA_Inc] [Leonardo_Dagum] 2016-08-29
cloudcheck-ping 45514 udp ASSIA CloudCheck WiFi Management keepalive [ASSIA_Inc] [Leonardo_Dagum] 2016-08-29
45515-45677 Unassigned
winrm 47001 tcp Windows Remote Management Service [Ryan_Mack] [Ryan_Mack] 2009-04-29
47001 udp Reserved
jvl-mactalk 47100 udp Configuration of motors connected to Industrial Ethernet [JVL_Industri_Elektronik] [Kim_Berthelsen] 2012-12-21
47100 tcp Reserved
47101-47556 Unassigned
47810-47999 Unassigned
nimspooler 48001 tcp Nimbus Spooler [Carstein_Seeberg_2] [Carstein_Seeberg_2]
nimspooler 48001 udp Nimbus Spooler [Carstein_Seeberg_2] [Carstein_Seeberg_2]
48051-48127 Unassigned
isnetserv 48128 tcp Image Systems Network Services [Bengt_Gustafsson] [Bengt_Gustafsson] 2006-05
isnetserv 48128 udp Image Systems Network Services [Bengt_Gustafsson] [Bengt_Gustafsson] 2006-05
blp5 48129 tcp Bloomberg locator [Albert_Hou] [Albert_Hou] 2006-05
blp5 48129 udp Bloomberg locator [Albert_Hou] [Albert_Hou] 2006-05
48130-48555 Unassigned
48557-48618 Unassigned
iqobject 48619 tcp iqobject [Bjorn_de_Bonnenfant] [Bjorn_de_Bonnenfant] 2003-11
iqobject 48619 udp iqobject [Bjorn_de_Bonnenfant] [Bjorn_de_Bonnenfant] 2003-11
nusrp 49001 tcp Nuance Unity Service Request Protocol [Nuance_Communications_Inc3] [Andrew_Andrews] 2017-04-20
nusdp-disc 49001 udp Nuance Unity Service Discovery Protocol [Nuance_Communications_Inc3] [Andrew_Andrews] 2017-04-20
49002-49149 Unassigned
inspider 49150 tcp InSpider System [AnRobot] [Zhang_Xinnan] 2017-11-06
49150 udp Reserved
49151 IANA Reserved
leaf-1 Leaf-1 Protocol
trunk-1 Trunk-1 Protocol
1password 1Password Password Manager data sharing and synchronization protocol [Roustem_Karimov] [Roustem_Karimov] Defined TXT keys: None
adobe-vc Adobe Version Cue Defined TXT keys: txtvers=1, name, version, build
affinity-docs1 tcp Affinity Photo document sharing [Serif_Europe_Ltd] [Tom_Lachecki] 2023-03-30 Defined TXT keys: Proprietary
av-chat-ring-01 tcp TCP SpyChat Stream Message Exchange [Alexios_Vasileiadis] [Alexios_Vasileiadis] 2018-05-03 Defined TXT keys: There are two TXT record keys: 1st key: "txt-vers" associated with an 'int' entry. 2nd key: "conn-stat" associated with an 'int' entry.
autotunnel udp IPSEC VPN tunnel over UDP [Stuart_Cheshire] [Stuart_Cheshire] 2019-05-04 [RFC6281] Defined TXT Keys: None
b3d-convince 3M Unitek Digital Orthodontic System [Rajiv_Aaron_Manglani] [Rajiv_Aaron_Manglani] Defined TXT keys: txtvers=1, protovers=<api version>, guid=<32 hex digits>
certificates tcp Server for S/MIME and PGP certificates [IESG] [John_Levine] 2016-07-26 [draft-bhjl-x509-srv-01] Defined TXT keys: None
core-rd tcp Resource Directory accessed using CoAP over TCP [IESG] [IETF_Chair] 2021-03-16 [RFC9176] Defined TXT keys: None
core-rd udp Resource Directory accessed using CoAP [IESG] [IETF_Chair] 2021-03-16 [RFC9176] Defined TXT keys: None
core-rd-tls tcp Resource Directory accessed using CoAP over TLS [IESG] [IETF_Chair] 2021-03-16 2022-04-14 [RFC9176] Defined TXT keys: None
core-rd-dtls udp Resource Directory accessed using CoAP over DTLS [IESG] [IETF_Chair] 2021-03-16 [RFC9176] Defined TXT keys: None
dccp-ping dccp ping/traceroute using DCCP [Samuel_Jero] [Samuel_Jero] 2012-11-14 1885957735 Defined TXT keys: None
dns-llq-tls tcp DNS Long-Lived Queries over TLS [Stuart_Cheshire] [Stuart_Cheshire] 2019-05-04 [RFC6281] Defined TXT Keys: None
dns-push-tls tcp DNS Push Notification Service Type [IESG] [IETF_Chair] 2019-11-25 [RFC8765, Section 6.1] Defined TXT Keys: None
dns-update-tls tcp DNS Dynamic Update Service over TLS [Stuart_Cheshire] [Stuart_Cheshire] 2019-05-04 [RFC6281] DNS Dynamic Update Service for a given domain may not necessarily be provided by the principal name servers as advertised by the domain's "NS" records, and may not necessarily always be provided on port 53. The "_dns-update._udp.<domain>." SRV record gives the target host and port where DNS Dynamic Update Service is provided for the named domain.
edge1 tcp Edge1 Base Station [Skycatch_Inc.] [Ruben_Beltran_del_Rio_3] 2018-02-09 Defined TXT keys: None
est-coaps udp EST over secure CoAP (EST-coaps) [Toerless_Eckert_3] [Toerless_Eckert_3] 2022-05-03 2022-05-04 [RFC9148]. Defined TXT keys: None
ewelink tcp eWeLink devices supporting LAN Control [Shenzhen_CoolKit_Technology_Co._Ltd.] [Michael_Hu] 2019-01-17 Defined TXT keys: txtvers, id, type, apivers, encrypt, data1, data2, data3, data4, iv
eyetvsn EyeTV Sharing [Elgato] [Elgato] Defined TXT keys: txtvers=1, keyhash=<4 bytes>
fix Financial Information Exchange (FIX) Protocol [Joakim_Johansson] [Joakim_Johansson] Defined TXT keys: Currently valid enumerated values: FIX Session Protocol Versions (SESSIONVERSION): 1.1 FIX Application Protocol Versions (APPLICATIONVERSION): 2.7, 3.0, 4.0, 4.1, 4.2, 4.3, 4.4, 5.0 Possible TXT records defined and their values (replace uppercase text with enumerations from the list above): txtvers=1 fix=APPLICATIONVERSION fix supported=APPLICATIONVERSION[,APPLICATIONVERSION, ... ,APPLICATIONVERSION] fixt=SESSIONVERSION
help HELP command [RFC1078] TCP Port Service Multiplexer (TCPMUX)
hpr-bldlnx HP Remote Build System for Linux-based Systems [Jeffrey_J_Walls] [Jeffrey_J_Walls] Defined TXT keys: rh73, rhel3, rhel4, deb31, suse102
hpr-toollnx HP Remote System that houses compilers and tools for Linux-based Systems [Jeffrey_J_Walls] [Jeffrey_J_Walls] Defined TXT keys: rh73, rhel3, rhel4, deb31, suse102
hpr-tstlnx HP Remote Test System for Linux-based Systems [Jeffrey_J_Walls] [Jeffrey_J_Walls] Defined TXT keys: rh73, rhel3, rhel4, deb31, suse102
iad1 BBN IAD 2013-05-24 This service name is no longer in use.
ichat iChat 1.0 [Jens_Alfke] [Jens_Alfke] Defined TXT keys: Proprietary
im tcp Instant Messaging [RFC3861]
im udp Instant Messaging [RFC3861]
jnx-kcsync tcp jollys keychain cloud sync protocol [Patrick_Stein] [Patrick_Stein] 2011-10-24 Defined TXT keys: hash=<40hex characters> salt=<40hex characters> uuid=<40hex characters> Example: hash=5e7580598c0d7064d4fc79faaeb42585e1a675f8 salt=f0164cb3a0c3d7efe75abea8fda86d2d56c8dda9 uuid=db61dc092922252e45bbb264f59147138c7fd5fa
lsys-ezcfg LinkSys EZ Configuration [Frank_Zerangue] [Frank_Zerangue] Defined TXT keys: model=value (string) serial=value (sring) hwversion=value (string) swversion=value (string) ifversion=value (string) type=value (string) mac=value (12 hex digits)
lsys-oamp LinkSys Operations, Administration, Management, and Provisioning [Frank_Zerangue] [Frank_Zerangue] Defined TXT keys: model=value (string) serial=value (sring) hwversion=value (string) swversion=value (string) ifversion=value (string) type=value (string) mac=value (12 hex digits)
lumiere tcp A protocol to remotely control DMX512 devices over the network [Gangsta_Ltd] [Jean-Charles_Boude] 2011-10-13 Defined TXT keys: None
M30S1PT tcp Moritz30-Project Standard protocol 1 Plain Text [Moritz30] [Matthias_Merkel] 2015-12-07 Defined TXT keys: None
M30S1PT udp Moritz30-Project Standard protocol 1 Plain Text [Moritz30] [Matthias_Merkel] 2015-12-07 Defined TXT keys: None
mazepseudo-game udp Peer to peer communication between instances of the Maze Pseudo game. [Mad_Elf_Software_Inc.] [Kenneth_Suda] 2016-02-02 2016-03-30 Defined TXT keys: 1 TXT record key for the RSA public key used by the server instance.
mediaboard1 MediaBoardONE Asset and Information Manager data sharing and synchronization protocol [Thomas_K_Fischer] [Thomas_K_Fischer] Defined TXT keys: None
meshcop udp Thread Mesh Commissioning [Thread_Group_Inc] [Esko_Dijk] 2020-11-20 Defined TXT keys: Thread 1.1 Specification, Section 8.4.1.1.2. https://www.threadgroup.org/ThreadSpec
meshcop-e udp Thread Mesh Commissioning Ephemeral-key [Thread_Group_Inc] [Esko_Dijk] 2024-01-22 Defined TXT keys: TXT records keys, if any, will be defined in Section 8.12 of the Thread Specification. https://www.threadgroup.org/ThreadSpec
moodring Bonjour Mood Ring tutorial program [Daniel_Steinberg] [Daniel_Steinberg] Defined TXT keys: txtvers=1 mood=<ascii digit from 0-4>
nfs-domainroot tcp NFS service for the domain root, the root of an organization's published file namespace. [IESG] [IETF_Chair] 2012-04-24 [RFC6641] Defined TXT keys: None
objective Means for clients to locate servers in an Objective (http://www.objective.com) instance. [Marc_Bailey] [Marc_Bailey] Defined TXT keys: txtvers='1' type={'production'|'standby'|'test'|'demo'} protocol={['SOAP'],['CORBA']} transport=['iiop']|['http']
oca tcp Insecure OCP.1 protocol, which is the insecure TCP/IP implementation of the Object Control Architecture [OCA_Alliance] [Stephan_van_Tienen] 2012-10-11 Defined TXT keys: txtvers=1 protovers=x
oca udp Insecure OCP.1 protocol, which is the insecure TCP/IP implementation of the Object Control Architecture [OCA_Alliance] [Stephan_van_Tienen] 2012-10-11 Defined TXT keys: txtvers=1 protovers=x
ocasec tcp Secure OCP.1 protocol, which is the secure TCP/IP implementation of the Object Control Architecture [OCA_Alliance] [Stephan_van_Tienen] 2012-10-11 Defined TXT keys: txtvers=1 protovers=x

Contact Information

ID Name Organization Contact URI Last Updated
[Albert_Hou] Albert Hou mailto:ahou1&bloomberg.com 2006-05
[Alexios_Vasileiadis] Alexios Vasileiadis mailto:alexvas100&gmail.com 2018-05-03
[Anders_Brandt_3] Anders Brandt Sigma Designs mailto:anders_brandt&sigmadesigns.com 2012-10-12
[Andrew_Andrews] Andrew Andrews mailto:Andrew.Andrews&Nuance.com 2017-04-26
[AnRobot] AnRobot mailto:webmaster&anrobot.org 2017-11-06
[ASSIA_Inc] ASSIA Inc. mailto:info&assia-inc.com 2016-08-29
[Bengt_Gustafsson] Bengt Gustafsson mailto:bengt.gustafsson&imagesystems.se 2006-05
[Bjorn_de_Bonnenfant] Bjorn de Bonnenfant mailto:bdeb&iqobject.com 2003-11
[Brian_Batke_2] Brian Batke mailto:eip.jsig&gmail.com
[Carstein_Seeberg_2] Carstein Seeberg mailto:case&nimsoft.no
[Cisco_Systems] Cisco Systems mailto:nmtg-port-numbers&cisco.com 2005-11
[Daniel_Steinberg] Daniel Steinberg mailto:daniel&oreilly.com
[Elgato] Elgato mailto:support&elgato.com
[Esko_Dijk] Esko Dijk Thread Group, Inc. mailto:esko.dijk&iotconsultancy.nl 2024-01-22
[Frank_Zerangue] Frank Zerangue mailto:fzerang&cisco.com
[Gangsta_Ltd] Gangsta Ltd. mailto:jc&gangstamedia.com 2011-10-13
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[Jean-Charles_Boude] Jean-Charles Boude Gangsta Ltd. mailto:jc&gangstamedia.com 2011-10-17
[Jeffrey_J_Walls] Jeffrey J. Walls mailto:jeff.walls&hp.com
[Jens_Alfke] Jens Alfke mailto:jens&apple.com
[Joakim_Johansson] Joakim Johansson mailto:joakim.johansson&tbricks.com
[John_Levine] John Levine mailto:standards&taugh.com 2016-07-26
[JVL_Industri_Elektronik] JVL Industri Elektronik mailto:jvl&jvl.dk 2012-12-21
[Ken_McDonell] Ken McDonell mailto:kenj&internode.on.net 2010-12-20
[Kenneth_Suda] Kenneth Suda Mad Elf Software, Inc. mailto:help&madelfsoftware.com 2016-03-30
[Kim_Berthelsen] Kim Berthelsen JVL Industri Elektronik mailto:kb&jvl.dk 2012-12-21
[Leonardo_Dagum] Leonardo Dagum mailto:ldagum&assia-inc.com 2016-08-29
[Mad_Elf_Software_Inc.] Mad Elf Software, Inc. mailto:help&madelfsoftware.com 2016-03-30
[Marc_Bailey] Marc Bailey mailto:marc&objective.com
[Matthias_Merkel] Matthias Merkel mailto:moritz30&moritz30.de 2015-12-07
[Michael_Hu] Michael Hu Shenzhen CoolKit Technology Co., Ltd. mailto:michael.hu&coolkit.cn 2019-01-17
[Moritz30] Moritz30 mailto:moritz30&moritz30.de 2015-12-07
[Nuance_Communications_Inc3] Nuance Communications, Inc. mailto:Andrew.Andrews&Nuance.com 2017-04-20
[Nuance_Communications_Inc4] Nuance Communications, Inc. mailto:dev&nsius.com 2017-04-26
[OCA_Alliance] OCA Alliance mailto:tina.lipscomb&oca-alliance.com 2017-05-19
[Patrick_Stein] Patrick Stein mailto:Patrick.Stein&jinx.eu 2011-10-24
[Rajiv_Aaron_Manglani] Rajiv Aaron Manglani mailto:rajivmanglani&mmm.com
[Roman_Kriis] Roman Kriis mailto:roman&previo.ee
[Roustem_Karimov] Roustem Karimov mailto:roustem&agilewebsolutions.com
[Ruben_Beltran_del_Rio_3] Ruben Beltran del Rio mailto:benb&skycatch.com 2018-02-09
[Ryan_Mack] Ryan Mack mailto:rmack&microsoft.com 2009-04-29
[Samuel_Jero] Samuel Jero mailto:sj323707&ohio.edu 2012-11-14
[Serif_Europe_Ltd] Serif (Europe) Ltd. mailto:affinity&serif.com 2023-03-30
[Shaper_Automation] Shaper Automation Inc. mailto:ports&shaperai.com 2012-06-22
[Shenzhen_CoolKit_Technology_Co._Ltd.] Shenzhen CoolKit Technology Co., Ltd. mailto:admin&coolkit.cn 2019-01-17
[Sigma_Designs_Inc] Sigma Designs, Inc. mailto:anders_brandt&sigmadesigns.com 2011-10-03
[Skycatch_Inc.] Skycatch, Inc. mailto:dev&skycatch.com 2018-02-09
[Stephan_van_Tienen] Stephan van Tienen OCA Alliance mailto:stephan.vantienen&bosch.com 2017-05-19
[Stuart_Cheshire] Stuart Cheshire mailto:cheshire&apple.com 2022-07-11
[Theo_Schlossnagle] Theo Schlossnagle mailto:jesus&omniti.com 2009-05-19
[Thomas_K_Fischer] Thomas K. Fischer mailto:thomas.fischer&interservices.de
[Thread_Group_Inc] Thread Group, Inc. mailto:help&threadgroup.org 2024-01-22
[Toerless_Eckert_3] Toerless Eckert mailto:tte&cs.fau.de 2022-05-03
[Tom_Lachecki] Tom Lachecki Serif (Europe) Ltd. mailto:tlachecki&serif.com 2023-03-30
[Yohann_Sulaiman] Yohann Sulaiman mailto:ports&shaperai.com 2012-06-22
[Zhang_Xinnan] Zhang Xinnan mailto:70331471&qq.com 2017-11-06