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
iscsi-target 3260 udp iSCSI port [IESG] [IETF_Chair] 2013-08-27 [RFC7143]
winshadow 3261 tcp winShadow [Colin_Barry] [Colin_Barry]
winshadow 3261 udp winShadow [Colin_Barry] [Colin_Barry]
necp 3262 tcp NECP [Alberto_Cerpa] [Alberto_Cerpa]
necp 3262 udp NECP [Alberto_Cerpa] [Alberto_Cerpa]
ecolor-imager 3263 tcp E-Color Enterprise Imager [Tamara_Baker] [Tamara_Baker]
ecolor-imager 3263 udp E-Color Enterprise Imager [Tamara_Baker] [Tamara_Baker]
ccmail 3264 tcp cc:mail/lotus [brockman] [brockman]
ccmail 3264 udp cc:mail/lotus [brockman] [brockman]
altav-tunnel 3265 tcp Altav Tunnel [Gary_M_Allen] [Gary_M_Allen]
altav-tunnel 3265 udp Altav Tunnel [Gary_M_Allen] [Gary_M_Allen]
ns-cfg-server 3266 tcp NS CFG Server [Aivi_Lie] [Aivi_Lie]
ns-cfg-server 3266 udp NS CFG Server [Aivi_Lie] [Aivi_Lie]
ibm-dial-out 3267 tcp IBM Dial Out [Skip_Booth] [Skip_Booth]
ibm-dial-out 3267 udp IBM Dial Out [Skip_Booth] [Skip_Booth]
msft-gc 3268 tcp Microsoft Global Catalog
msft-gc 3268 udp Microsoft Global Catalog
msft-gc-ssl 3269 tcp Microsoft Global Catalog with LDAP/SSL [Asaf_Kashi] [Asaf_Kashi]
msft-gc-ssl 3269 udp Microsoft Global Catalog with LDAP/SSL [Asaf_Kashi] [Asaf_Kashi]
verismart 3270 tcp Verismart [Jay_Weber] [Jay_Weber]
verismart 3270 udp Verismart [Jay_Weber] [Jay_Weber]
csoft-prev 3271 tcp CSoft Prev Port [Nedelcho_Stanev_3] [Nedelcho_Stanev_3]
csoft-prev 3271 udp CSoft Prev Port [Nedelcho_Stanev_3] [Nedelcho_Stanev_3]
user-manager 3272 tcp Fujitsu User Manager [Yukihiko_Sakurai] [Yukihiko_Sakurai]
user-manager 3272 udp Fujitsu User Manager [Yukihiko_Sakurai] [Yukihiko_Sakurai]
sxmp 3273 tcp Simple Extensible Multiplexed Protocol [admin] [admin]
sxmp 3273 udp Simple Extensible Multiplexed Protocol [admin] [admin]
ordinox-server 3274 tcp Ordinox Server [Denis_Ducharme] [Denis_Ducharme]
ordinox-server 3274 udp Ordinox Server [Denis_Ducharme] [Denis_Ducharme]
samd 3275 tcp SAMD [Edgar_Circenis] [Edgar_Circenis]
samd 3275 udp SAMD [Edgar_Circenis] [Edgar_Circenis]
maxim-asics 3276 tcp Maxim ASICs [Dave_Inman] [Dave_Inman]
maxim-asics 3276 udp Maxim ASICs [Dave_Inman] [Dave_Inman]
awg-proxy 3277 tcp AWG Proxy [Alex_McDonald] [Alex_McDonald]
awg-proxy 3277 udp AWG Proxy [Alex_McDonald] [Alex_McDonald]
lkcmserver 3278 tcp LKCM Server [Javier_Jimenez] [Javier_Jimenez]
lkcmserver 3278 udp LKCM Server [Javier_Jimenez] [Javier_Jimenez]
admind 3279 tcp admind [Jeff_Haynes] [Jeff_Haynes]
admind 3279 udp admind [Jeff_Haynes] [Jeff_Haynes]
vs-server 3280 tcp VS Server [Scott_Godlew] [Scott_Godlew]
vs-server 3280 udp VS Server [Scott_Godlew] [Scott_Godlew]
sysopt 3281 tcp SYSOPT [Tony_Hoffman] [Tony_Hoffman]
sysopt 3281 udp SYSOPT [Tony_Hoffman] [Tony_Hoffman]
datusorb 3282 tcp Datusorb [Thomas_Martin] [Thomas_Martin]
datusorb 3282 udp Datusorb [Thomas_Martin] [Thomas_Martin]
Apple Remote Desktop (Net Assistant) 3283 tcp Net Assistant [Michael_Stein] [Michael_Stein] 2011-11-09
Apple Remote Desktop (Net Assistant) 3283 udp Net Assistant [Michael_Stein] [Michael_Stein] 2011-11-09
4talk 3284 tcp 4Talk [Tony_Bushnell] [Tony_Bushnell]
4talk 3284 udp 4Talk [Tony_Bushnell] [Tony_Bushnell]
plato 3285 tcp Plato [Jim_Battin] [Jim_Battin]
plato 3285 udp Plato [Jim_Battin] [Jim_Battin]
e-net 3286 tcp E-Net [Steven_Grigsby] [Steven_Grigsby]
e-net 3286 udp E-Net [Steven_Grigsby] [Steven_Grigsby]
directvdata 3287 tcp DIRECTVDATA [Michael_Friedman] [Michael_Friedman]
directvdata 3287 udp DIRECTVDATA [Michael_Friedman] [Michael_Friedman]
cops 3288 tcp COPS [Shai_Herzog] [Shai_Herzog]
cops 3288 udp COPS [Shai_Herzog] [Shai_Herzog]
enpc 3289 tcp ENPC [SEIKO_EPSON_2] [SEIKO_EPSON_2]
enpc 3289 udp ENPC [SEIKO_EPSON_2] [SEIKO_EPSON_2]
caps-lm 3290 tcp CAPS LOGISTICS TOOLKIT - LM [Joseph_Krebs] [Joseph_Krebs]
caps-lm 3290 udp CAPS LOGISTICS TOOLKIT - LM [Joseph_Krebs] [Joseph_Krebs]
sah-lm 3291 tcp S A Holditch & Associates - LM [Randy_Hudgens] [Randy_Hudgens]
sah-lm 3291 udp S A Holditch & Associates - LM [Randy_Hudgens] [Randy_Hudgens]
cart-o-rama 3292 tcp Cart O Rama [Phillip_Dillinger] [Phillip_Dillinger]
cart-o-rama 3292 udp Cart O Rama [Phillip_Dillinger] [Phillip_Dillinger]
fg-fps 3293 tcp fg-fps
fg-fps 3293 udp fg-fps
fg-gip 3294 tcp fg-gip [Jean_Marc_Frailong] [Jean_Marc_Frailong]
fg-gip 3294 udp fg-gip [Jean_Marc_Frailong] [Jean_Marc_Frailong]
dyniplookup 3295 tcp Dynamic IP Lookup [Eugene_Osovetsky] [Eugene_Osovetsky]
dyniplookup 3295 udp Dynamic IP Lookup [Eugene_Osovetsky] [Eugene_Osovetsky]
rib-slm 3296 tcp Rib License Manager [Kristean_Heisler] [Kristean_Heisler]
rib-slm 3296 udp Rib License Manager [Kristean_Heisler] [Kristean_Heisler]
cytel-lm 3297 tcp Cytel License Manager [Yogesh_P_Gajjar] [Yogesh_P_Gajjar]
cytel-lm 3297 udp Cytel License Manager [Yogesh_P_Gajjar] [Yogesh_P_Gajjar]
deskview 3298 tcp DeskView [Manfred_Randelzofer] [Manfred_Randelzofer]
deskview 3298 udp DeskView [Manfred_Randelzofer] [Manfred_Randelzofer]
pdrncs 3299 tcp pdrncs [Paul_Wissenbach] [Paul_Wissenbach]
pdrncs 3299 udp pdrncs [Paul_Wissenbach] [Paul_Wissenbach]
ceph 3300 tcp Ceph monitor [Sage_Weil] [Sage_Weil] 2015-06-29 Known Unauthorized Use on port 3300
3300 udp Reserved
tarantool 3301 tcp Tarantool in-memory computing platform [Tarantool] [Alexander_Turenko] 2022-06-10 Known Unauthorized Use on port 3301
tarantool 3301 udp Tarantool in-memory computing platform [Tarantool] [Alexander_Turenko] 2022-06-10 Known Unauthorized Use on port 3301
mcs-fastmail 3302 tcp MCS Fastmail [Patti_Jo_Newsom] [Patti_Jo_Newsom]
mcs-fastmail 3302 udp MCS Fastmail [Patti_Jo_Newsom] [Patti_Jo_Newsom]
opsession-clnt 3303 tcp OP Session Client
opsession-clnt 3303 udp OP Session Client
opsession-srvr 3304 tcp OP Session Server [Amir_Blich] [Amir_Blich]
opsession-srvr 3304 udp OP Session Server [Amir_Blich] [Amir_Blich]
odette-ftp 3305 tcp ODETTE-FTP [David_Nash] [David_Nash] [RFC5024]
odette-ftp 3305 udp ODETTE-FTP [David_Nash] [David_Nash] [RFC5024]
mysql 3306 tcp MySQL [Monty] [Monty]
mysql 3306 udp MySQL [Monty] [Monty]
opsession-prxy 3307 tcp OP Session Proxy [Amir_Blich] [Amir_Blich]
opsession-prxy 3307 udp OP Session Proxy [Amir_Blich] [Amir_Blich]
tns-server 3308 tcp TNS Server
tns-server 3308 udp TNS Server
tns-adv 3309 tcp TNS ADV [Jerome_Albin] [Jerome_Albin]
tns-adv 3309 udp TNS ADV [Jerome_Albin] [Jerome_Albin]
dyna-access 3310 tcp Dyna Access [Dave_Belliveau] [Dave_Belliveau]
dyna-access 3310 udp Dyna Access [Dave_Belliveau] [Dave_Belliveau]

Contact Information

ID Name Organization Contact URI Last Updated
[Aivi_Lie] Aivi Lie mailto:LIEA&netsoft.com
[Alberto_Cerpa] Alberto Cerpa mailto:cerpa&isi.edu
[Alex_McDonald] Alex McDonald mailto:alexm&an.hp.com
[Alexander_Turenko] Alexander Turenko Tarantool mailto:alexander.turenko&tarantool.org 2022-06-10
[Amir_Blich] Amir Blich mailto:amir&netmanage.co.il
[Asaf_Kashi] Asaf Kashi mailto:asafk&microsoft.com
[Colin_Barry] Colin Barry mailto:cbarry&gbahn.com
[Dave_Belliveau] Dave Belliveau mailto:DaveBelliveau&cornerstonesoftware.com
[Dave_Inman] Dave Inman mailto:davei&mxim.com
[David_Nash] David Nash mailto:dnash&ford.com
[Denis_Ducharme] Denis Ducharme mailto:dducharme&softek.com
[Edgar_Circenis] Edgar Circenis mailto:ec&fc.hp.com
[Eugene_Osovetsky] Eugene Osovetsky mailto:eugeneo&geocities.com
[Gary_M_Allen] Gary M. Allen mailto:gallen&symantec.com
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[Javier_Jimenez] Javier Jimenez
[Jay_Weber] Jay Weber mailto:weber&vfi.com
[Jean_Marc_Frailong] Jean-Marc Frailong mailto:jmf&freegate.net
[Jeff_Haynes] Jeff Haynes mailto:haynes&chistech.com
[Jerome_Albin] Jerome Albin mailto:albin&taec.enet.dec.com
[Jim_Battin] Jim Battin mailto:battin&tro.com
[Joseph_Krebs] Joseph Krebs mailto:joek&caps.com
[Kristean_Heisler] Kristean Heisler mailto:kh&rib.de
[Manfred_Randelzofer] Manfred Randelzofer mailto:manfred.randelzofer&fujitsu-siemens.com
[Michael_Friedman] Michael Friedman mailto:mfr1&worldnet.att.net
[Michael_Stein] Michael Stein mailto:mvs&apple.com
[Monty] Monty mailto:monty&analytikerna.se
[Nedelcho_Stanev_3] Nedelcho Stanev mailto:decho&iname.com
[Patti_Jo_Newsom] Patti Jo Newsom mailto:pjn&mcsdallas.com
[Paul_Wissenbach] Paul Wissenbach mailto:paulwi&vnd.tek.com
[Phillip_Dillinger] Phillip Dillinger mailto:Phillip.Dillinger&sealabs.com
[Randy_Hudgens] Randy Hudgens mailto:rhh&nmail.holditch.com
[SEIKO_EPSON_2] SEIKO EPSON mailto:Ishida.Hitoshi&exc.epson.co.jp
[Sage_Weil] Sage Weil mailto:sage&newdream.net 2015-06-29
[Scott_Godlew] Scott Godlew mailto:Scott&godlew.com
[Shai_Herzog] Shai Herzog mailto:herzog&iphighway.com
[Skip_Booth] Skip Booth mailto:sbooth&vnet.ibm.com
[Steven_Grigsby] Steven Grigsby mailto:sgrigsby&austin.eent.com
[Tamara_Baker] Tamara Baker mailto:tbaker&ecolor.com
[Tarantool] Tarantool mailto:admin&tarantool.org 2022-06-10
[Thomas_Martin] Thomas Martin mailto:thomas&datus-usa.com
[Tony_Bushnell] Tony Bushnell mailto:tony_bushnell&four-sight.co.uk
[Tony_Hoffman] Tony Hoffman mailto:ajh&unx.dec.com
[Yogesh_P_Gajjar] Yogesh P. Gajjar mailto:yogesh&cytel.com
[Yukihiko_Sakurai] Yukihiko Sakurai mailto:y-sakurai&ael.fujitsu.co.jp
[admin] admin mailto:iana&sightlinesystems.com
[brockman] mailto:brockman&ccmail.com