Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2024-12-20
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
corelccam 4300 udp Corel CCam [Jason_Aiken] [Jason_Aiken]
d-data 4301 tcp Diagnostic Data
d-data 4301 udp Diagnostic Data
d-data-control 4302 tcp Diagnostic Data Control [Jon_March] [Jon_March] 2006-09
d-data-control 4302 udp Diagnostic Data Control [Jon_March] [Jon_March] 2006-09
srcp 4303 tcp Simple Railroad Command Protocol [Matthias_Trute] [Matthias_Trute] 2007-01
srcp 4303 udp Simple Railroad Command Protocol [Matthias_Trute] [Matthias_Trute] 2007-01
owserver 4304 tcp One-Wire Filesystem Server [Paul_Alfille] [Paul_Alfille] 2007-01 Defined TXT keys: txtvers
owserver 4304 udp One-Wire Filesystem Server [Paul_Alfille] [Paul_Alfille] 2007-01 Defined TXT keys: txtvers
batman 4305 tcp better approach to mobile ad-hoc networking [Simon_Wunderlich] [Simon_Wunderlich] 2007-08-30
batman 4305 udp better approach to mobile ad-hoc networking [Simon_Wunderlich] [Simon_Wunderlich] 2007-08-30
pinghgl 4306 tcp Hellgate London [David_Berk] [David_Berk] 2007-08-30
pinghgl 4306 udp Hellgate London [David_Berk] [David_Berk] 2007-08-30
trueconf 4307 tcp TrueConf Videoconference Service [Dmitry_Odintsov] [Lev_Yakupov] 2007-10-22 2017-05-12
trueconf 4307 udp TrueConf Videoconference Service [Dmitry_Odintsov] [Lev_Yakupov] 2007-10-22 2017-05-12
compx-lockview 4308 tcp CompX-LockView [John_Payson] [John_Payson] 2007-10-22
compx-lockview 4308 udp CompX-LockView [John_Payson] [John_Payson] 2007-10-22
dserver 4309 tcp Exsequi Appliance Discovery [Angelo_Masci] [Angelo_Masci] 2007-01
dserver 4309 udp Exsequi Appliance Discovery [Angelo_Masci] [Angelo_Masci] 2007-01
mirrtex 4310 tcp Mir-RT exchange service [Sylvain_Robert] [Sylvain_Robert] 2008-02-14
mirrtex 4310 udp Mir-RT exchange service [Sylvain_Robert] [Sylvain_Robert] 2008-02-14
fdt-rcatp 4320 tcp FDT Remote Categorization Protocol [Russell_P_Holsclaw] [Russell_P_Holsclaw] 2006-03
fdt-rcatp 4320 udp FDT Remote Categorization Protocol [Russell_P_Holsclaw] [Russell_P_Holsclaw] 2006-03
4324 Reserved 2015-05-12 This entry is being removed on 2015-05-12.
dey-sapi 4330 tcp DEY Storage Administration REST API [DEY_Storage_Systems_Inc] [Garrett_D_Amore] 2013-03-01
4330 udp Reserved
netconf-ch-ssh 4334 tcp NETCONF Call Home (SSH) [IESG] [IETF_Chair] 2016-01-12 [RFC8071]
netconf-ch-tls 4335 tcp NETCONF Call Home (TLS) [IESG] [IETF_Chair] 2016-01-12 [RFC8071]
restconf-ch-tls 4336 tcp RESTCONF Call Home (TLS) [IESG] [IETF_Chair] 2016-01-12 [RFC8071]
gaia 4340 tcp Gaia Connector Protocol [Philippe_Detournay] [Philippe_Detournay] 2007-11-12
gaia 4340 udp Gaia Connector Protocol [Philippe_Detournay] [Philippe_Detournay] 2007-11-12
lisp-data 4341 udp LISP Data Packets [IESG] [IETF_Chair] 2007-11-12 2021-02-17 [RFC9300]
lisp-control 4342 udp LISP Control Packets [IETF] [IESG] 2007-05 2021-02-25 [RFC9301]
net-device 4350 tcp Net Device [Glenn_Peterson] [Glenn_Peterson]
net-device 4350 udp Net Device [Glenn_Peterson] [Glenn_Peterson]
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
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-data 4372 tcp LAN2CAN Data [Phil_Tolson] [Phil_Tolson] 2008-07-07 Modified: 21 January 2010
4380-4388 Unassigned
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
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
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
rsqlserver 4430 tcp REAL SQL Server [Marco_Bambini] [Marco_Bambini] 2008-08-28
rsqlserver 4430 udp REAL SQL Server [Marco_Bambini] [Marco_Bambini] 2008-08-28
4434-4440 Unassigned
camp 4450 tcp Common ASCII Messaging Protocol [Control_Technology_Inc] [Clint_Eskew] 2011-10-28
camp 4450 udp Common ASCII Messaging Protocol [Control_Technology_Inc] [Clint_Eskew] 2011-10-28
ntske 4460 tcp Network Time Security Key Establishment [IESG] [IETF_Chair] 2020-04-07 [RFC8915]
4460 udp Reserved
4489-4499 Unassigned Known UNAUTHORIZED USE: Ports 4490 and 4491
ipsec-nat-t 4500 tcp IPsec NAT-Traversal 2022-09-15 [RFC9329]
ipsec-nat-t 4500 udp IPsec NAT-Traversal 2017-07-07 [RFC3948][RFC7296]
4501 Unassigned [IANA] [IANA] De-registered 08 June 2001
a25-fap-fgw 4502 sctp A25 (FAP-FGW) [ThreeGPP_2] [Zhiming_Li] 2012-01-11
4503-4533 Unassigned
gds-adppiw-db 4550 tcp Perman I Interbase Server [Leo_Lesage] [Leo_Lesage] 2006-04
gds-adppiw-db 4550 udp Perman I Interbase Server [Leo_Lesage] [Leo_Lesage] 2006-04
rsip 4555 tcp RSIP Port [RFC3103]
rsip 4555 udp RSIP Port [RFC3103]
4560-4562 Unassigned
deploymentmap 4570 tcp Service to distribute and update within a site deployment information for Oracle Communications Suite [Oracle_3] [Dan_Newman] 2013-09-20
4570 udp Reserved
rid 4590 tcp RID over HTTP/TLS [IESG] [IETF_Chair] [RFC6546]
4590 udp Reserved
piranha1 4600 tcp Piranha1
piranha1 4600 udp Piranha1
piranha2 4601 tcp Piranha2 [Primark_Corporation] [Primark_Corporation]
piranha2 4601 udp Piranha2 [Primark_Corporation] [Primark_Corporation]
mtsserver 4602 tcp EAX MTS Server [Pedro_A_Rodriguez] [Pedro_A_Rodriguez] 2008-08-06
4602 udp Reserved
menandmice-upg 4603 tcp Men & Mice Upgrade Agent [Eggert_Thorlacius_2] [Eggert_Thorlacius_2] 2010-01-27
4603 udp Reserved

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
[Angelo_Masci] Angelo Masci mailto:angelomasci&yahoo.co.uk 2007-01
[Clint_Eskew] Clint Eskew Control Technology Inc. mailto:ceskew&controltechnology.com 2011-10-28
[Control_Technology_Inc] Control Technology Inc. mailto:ceskew&controltechnology.com 2011-10-28
[Dan_Newman] Dan Newman Oracle Corp. mailto:dan.c.newman&oracle.com 2013-09-20
[David_Berk] David Berk mailto:dberk&ping-0.com 2007-08-30
[David_Farajun] David Farajun mailto:dfarajun&asigra.com 2004-11
[DEY_Storage_Systems_Inc] DEY Storage Systems, Inc. mailto:garrett&dey-sys.com 2013-03-01
[Dmitry_Odintsov] Dmitry Odintsov mailto:dimodin&trueconf.com 2017-05-12
[Eggert_Thorlacius_2] Eggert Thorlacius mailto:eggi&menandmice.com 2010-01-27
[Garrett_D_Amore] Garrett D'Amore DEY Storage Systems, Inc. mailto:garrett&dey-sys.com 2013-03-01
[Glenn_Peterson] Glenn Peterson mailto:glennp&microsoft.com
[Harry_Courtice] Harry Courtice mailto:harry.courtice&elprotech.com 2008-04-14
[IANA] IANA mailto:iana&iana.org
[IESG] IESG mailto:iesg&ietf.org
[IETF] IETF mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[ITGroup] ITGroup mailto:itgroup&stillsecure.com 2008-06-30
[Ian_Manning_2] Ian Manning mailto:ian&baycastle.co.uk 2009-12-16
[Jason_Aiken] Jason Aiken mailto:jasona&corelcomputer.com
[John_Payson] John Payson mailto:john&circad.com 2007-10-22
[Jon_March] Jon March mailto:jon.march&paget-analyst-services.co.uk 2006-09
[Kristean_Heisler_2] Kristean Heisler mailto:Kristean.Heisler&rib-software.com 2009-12-16
[Leo_Lesage] Leo Lesage mailto:leo.lesage&adp.nl 2006-04
[Lev_Yakupov] Lev Yakupov mailto:lyakupov&trueconf.com 2017-05-12
[Marco_Bambini] Marco Bambini mailto:marco&realsoftware.com 2008-08-28
[Matthias_Trute] Matthias Trute mailto:mtrute&web.de 2007-01
[NVM_Express_Inc] NVM Express, Inc. mailto:admin&nvmexpress.org 2018-03-27
[Oracle_3] Oracle Corp. mailto:dan.c.newman&oracle.com 2013-09-20
[Paul_Alfille] Paul Alfille mailto:paul.alfille&gmail.com 2007-01
[Pedro_A_Rodriguez] Pedro A Rodriguez mailto:pedro.rdz&eaxtechnologies.com.mx 2008-08-06
[Phil_Tolson] Phil Tolson mailto:philtolson&eaton.com 2010-01-21
[Philippe_Detournay] Philippe Detournay mailto:philippe.detournay&acrosoft.be 2007-11-12
[Primark_Corporation] Primark Corporation mailto:joe.boone&primark.com
[Rehan_Mahmood] Rehan Mahmood mailto:rehan&matrixmultimedia.co.uk 2009-03-18
[Russell_P_Holsclaw] Russell P. Holsclaw Fast Data Technology Inc. mailto:rholsclaw&fastdatatech.com 2006-03
[Scott_Guthery_2] Scott Guthery mailto:sguthery&hidcorp.com 2008-08-25
[Simon_Wunderlich] Simon Wunderlich mailto:siwu&hrz.tu-chemnitz.de 2007-08-30
[Steven_Sweeting] Steven Sweeting mailto:ssweeting&sls-technology.com 2008-01-28
[Sylvain_Robert] Sylvain Robert mailto:sylvain.robert&datadis.com 2008-02-14
[ThreeGPP_2] 3GPP2 mailto:lizhiming&huawei.com 2012-01-11
[Zhiming_Li] Zhiming Li 3GPP2 mailto:lizhiming&huawei.com 2012-01-11