Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2024-10-15
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
servergraph 1251 tcp servergraph [Lindsay_Morris] [Lindsay_Morris]
servergraph 1251 udp servergraph [Lindsay_Morris] [Lindsay_Morris]
bspne-pcc 1252 tcp bspne-pcc
bspne-pcc 1252 udp bspne-pcc
q55-pcc 1253 tcp q55-pcc [Prem_Tirilok] [Prem_Tirilok]
q55-pcc 1253 udp q55-pcc [Prem_Tirilok] [Prem_Tirilok]
de-noc 1254 tcp de-noc
de-noc 1254 udp de-noc
de-cache-query 1255 tcp de-cache-query
de-cache-query 1255 udp de-cache-query
de-server 1256 tcp de-server [Jeff_Burdette] [Jeff_Burdette]
de-server 1256 udp de-server [Jeff_Burdette] [Jeff_Burdette]
shockwave2 1257 tcp Shockwave 2 [Dave_Simmons] [Dave_Simmons]
shockwave2 1257 udp Shockwave 2 [Dave_Simmons] [Dave_Simmons]
opennl 1258 tcp Open Network Library [Phil_Frisbie] [Phil_Frisbie]
opennl 1258 udp Open Network Library [Phil_Frisbie] [Phil_Frisbie]
opennl-voice 1259 tcp Open Network Library Voice [Phil_Frisbie] [Phil_Frisbie]
opennl-voice 1259 udp Open Network Library Voice [Phil_Frisbie] [Phil_Frisbie]
ibm-ssd 1260 tcp ibm-ssd [Barry_Whyte] [Barry_Whyte]
ibm-ssd 1260 udp ibm-ssd [Barry_Whyte] [Barry_Whyte]
mpshrsv 1261 tcp mpshrsv [Makoto_Ikeyama] [Makoto_Ikeyama]
mpshrsv 1261 udp mpshrsv [Makoto_Ikeyama] [Makoto_Ikeyama]
qnts-orb 1262 tcp QNTS-ORB [Raghurama_Bhat] [Raghurama_Bhat]
qnts-orb 1262 udp QNTS-ORB [Raghurama_Bhat] [Raghurama_Bhat]
dka 1263 tcp dka [Chris_Griffin] [Chris_Griffin]
dka 1263 udp dka [Chris_Griffin] [Chris_Griffin]
prat 1264 tcp PRAT [Keith_Wood] [Keith_Wood]
prat 1264 udp PRAT [Keith_Wood] [Keith_Wood]
dssiapi 1265 tcp DSSIAPI [Jim_Turner] [Jim_Turner]
dssiapi 1265 udp DSSIAPI [Jim_Turner] [Jim_Turner]
dellpwrappks 1266 tcp DELLPWRAPPKS [David_Troeger] [David_Troeger]
dellpwrappks 1266 udp DELLPWRAPPKS [David_Troeger] [David_Troeger]
epc 1267 tcp eTrust Policy Compliance [Aaron_Stein] [Aaron_Stein]
epc 1267 udp eTrust Policy Compliance [Aaron_Stein] [Aaron_Stein]
propel-msgsys 1268 tcp PROPEL-MSGSYS [Bert_Van_der_Linden] [Bert_Van_der_Linden]
propel-msgsys 1268 udp PROPEL-MSGSYS [Bert_Van_der_Linden] [Bert_Van_der_Linden]
watilapp 1269 tcp WATiLaPP [Frederic_Weymann] [Frederic_Weymann]
watilapp 1269 udp WATiLaPP [Frederic_Weymann] [Frederic_Weymann]
opsmgr 1270 tcp Microsoft Operations Manager [Ashvin_Sanghvi] [Ashvin_Sanghvi]
opsmgr 1270 udp Microsoft Operations Manager [Ashvin_Sanghvi] [Ashvin_Sanghvi]
excw 1271 tcp eXcW [Norm_Freedman] [Norm_Freedman]
excw 1271 udp eXcW [Norm_Freedman] [Norm_Freedman]
cspmlockmgr 1272 tcp CSPMLockMgr [Ibtsam_Mahfouz] [Ibtsam_Mahfouz]
cspmlockmgr 1272 udp CSPMLockMgr [Ibtsam_Mahfouz] [Ibtsam_Mahfouz]
emc-gateway 1273 tcp EMC-Gateway [Rene_Fontaine] [Rene_Fontaine]
emc-gateway 1273 udp EMC-Gateway [Rene_Fontaine] [Rene_Fontaine]
t1distproc 1274 tcp t1distproc [Julian_Biddle] [Julian_Biddle]
t1distproc 1274 udp t1distproc [Julian_Biddle] [Julian_Biddle]
ivcollector 1275 tcp ivcollector
ivcollector 1275 udp ivcollector
1276 tcp Reserved 2014-05-23 This entry has been removed on 2014-05-23.
1276 udp Reserved 2014-05-23 This entry has been removed on 2014-05-23.
miva-mqs 1277 tcp mqs [Miva_Corporation] [Miva_Corporation]
miva-mqs 1277 udp mqs [Miva_Corporation] [Miva_Corporation]
dellwebadmin-1 1278 tcp Dell Web Admin 1 [Bridget_Navoda] [Bridget_Navoda]
dellwebadmin-1 1278 udp Dell Web Admin 1 [Bridget_Navoda] [Bridget_Navoda]
dellwebadmin-2 1279 tcp Dell Web Admin 2 [Bridget_Navoda] [Bridget_Navoda]
dellwebadmin-2 1279 udp Dell Web Admin 2 [Bridget_Navoda] [Bridget_Navoda]
pictrography 1280 tcp Pictrography [Takashi_Hoshino] [Takashi_Hoshino]
pictrography 1280 udp Pictrography [Takashi_Hoshino] [Takashi_Hoshino]
healthd 1281 tcp healthd [James_E_Housley] [James_E_Housley]
healthd 1281 udp healthd [James_E_Housley] [James_E_Housley]
emperion 1282 tcp Emperion [Claus_Thor_Barth] [Claus_Thor_Barth]
emperion 1282 udp Emperion [Claus_Thor_Barth] [Claus_Thor_Barth]
productinfo 1283 tcp Product Information
productinfo 1283 udp Product Information
iee-qfx 1284 tcp IEE-QFX [Mehrdad_Ashtiani] [Mehrdad_Ashtiani] 2009-10-19
iee-qfx 1284 udp IEE-QFX [Mehrdad_Ashtiani] [Mehrdad_Ashtiani] 2009-10-19
neoiface 1285 tcp neoiface [Jason_McManus] [Jason_McManus]
neoiface 1285 udp neoiface [Jason_McManus] [Jason_McManus]
netuitive 1286 tcp netuitive [JF_Huard] [JF_Huard]
netuitive 1286 udp netuitive [JF_Huard] [JF_Huard]
routematch 1287 tcp RouteMatch Com [Jeff_Jones] [Jeff_Jones] 2005-11
routematch 1287 udp RouteMatch Com [Jeff_Jones] [Jeff_Jones] 2005-11
navbuddy 1288 tcp NavBuddy [Eric_Hackman] [Eric_Hackman]
navbuddy 1288 udp NavBuddy [Eric_Hackman] [Eric_Hackman]
jwalkserver 1289 tcp JWalkServer
jwalkserver 1289 udp JWalkServer
winjaserver 1290 tcp WinJaServer
winjaserver 1290 udp WinJaServer
seagulllms 1291 tcp SEAGULLLMS [Lee_Breisacher] [Lee_Breisacher]
seagulllms 1291 udp SEAGULLLMS [Lee_Breisacher] [Lee_Breisacher]
dsdn 1292 tcp dsdn [Stanislaw_Skowronek] [Stanislaw_Skowronek]
dsdn 1292 udp dsdn [Stanislaw_Skowronek] [Stanislaw_Skowronek]
pkt-krb-ipsec 1293 tcp PKT-KRB-IPSec [Nancy_Davoust] [Nancy_Davoust]
pkt-krb-ipsec 1293 udp PKT-KRB-IPSec [Nancy_Davoust] [Nancy_Davoust]
cmmdriver 1294 tcp CMMdriver [Lutz_Karras] [Lutz_Karras]
cmmdriver 1294 udp CMMdriver [Lutz_Karras] [Lutz_Karras]
ehtp 1295 tcp End-by-Hop Transmission Protocol [Alexander_Bogdanov] [Alexander_Bogdanov]
ehtp 1295 udp End-by-Hop Transmission Protocol [Alexander_Bogdanov] [Alexander_Bogdanov]
dproxy 1296 tcp dproxy
dproxy 1296 udp dproxy
sdproxy 1297 tcp sdproxy [Raimond_Diederik] [Raimond_Diederik]
sdproxy 1297 udp sdproxy [Raimond_Diederik] [Raimond_Diederik]
lpcp 1298 tcp lpcp [Christian_Stredicke] [Christian_Stredicke]
lpcp 1298 udp lpcp [Christian_Stredicke] [Christian_Stredicke]
hp-sci 1299 tcp hp-sci [Kim_Scott] [Kim_Scott]
hp-sci 1299 udp hp-sci [Kim_Scott] [Kim_Scott]
h323hostcallsc 1300 tcp H.323 Secure Call Control Signalling [ITU-T] [ITU-T_TSB] 2013-01-31
h323hostcallsc 1300 udp H.323 Secure Call Control Signalling [ITU-T] [ITU-T_TSB] 2013-01-31
1301 tcp Reserved 2019-10-30 De-Assigned on 2019-10-30

Contact Information

ID Name Organization Contact URI Last Updated
[Aaron_Stein] Aaron Stein mailto:aaron.stein&ca.com
[Alexander_Bogdanov] Alexander Bogdanov mailto:alexandr_bgd&softhome.net
[Ashvin_Sanghvi] Ashvin Sanghvi mailto:AshvinS&microsoft.com
[Barry_Whyte] Barry Whyte mailto:barry_whyte&uk.ibm.com
[Bert_Van_der_Linden] Bert Van der Linden mailto:bert&propel.com
[Bridget_Navoda] Bridget Navoda mailto:Bridget_Navoda&dell.com
[Chris_Griffin] Chris Griffin mailto:cgriffin&dka.com
[Christian_Stredicke] Christian Stredicke mailto:stredicke&snom.de
[Claus_Thor_Barth] Claus Thor Barth mailto:iana&barth.dk
[Dave_Simmons] Dave Simmons mailto:dsimmons&macromedia.com
[David_Troeger] David Troeger mailto:David_Troeger&dell.com
[Eric_Hackman] Eric Hackman mailto:ehackman&millapps.com
[Frederic_Weymann] Frederic Weymann mailto:contact&fizzban.net
[ITU-T] ITU-T mailto:tsbsg16&itu.int 2013-01-31
[ITU-T_TSB] ITU-T TSB ITU-T mailto:tsbsg16&itu.int 2013-01-31
[Ibtsam_Mahfouz] Ibtsam Mahfouz mailto:imahfouz&cisco.com
[JF_Huard] JF Huard mailto:jfhuard&netuitive.com
[James_E_Housley] James E. Housley mailto:jim&thehousleys.net
[Jason_McManus] Jason McManus mailto:jasonm&neoinformatics.com
[Jeff_Burdette] Jeff Burdette mailto:support&digitalenvoy.net
[Jeff_Jones] Jeff Jones mailto:Jeff.Jones&routematch.com 2005-11
[Jim_Turner] Jim Turner mailto:Jim.Turner&asg.com
[Julian_Biddle] Julian Biddle mailto:julian_biddle&technologyonecorp.com
[Keith_Wood] Keith Wood mailto:keith.wood&epid.eurotherm.co.uk
[Kim_Scott] Kim Scott mailto:kims&cup.hp.com
[Lee_Breisacher] Lee Breisacher mailto:lbreisacher&seagullsw.com
[Lindsay_Morris] Lindsay Morris mailto:lmorris&servergraph.com
[Lutz_Karras] Lutz Karras mailto:karras&zeiss.de
[Makoto_Ikeyama] Makoto Ikeyama mailto:ikeyama&ael.fujitsu.co.jp
[Mehrdad_Ashtiani] Mehrdad Ashtiani mailto:mashtiani&ieeinc.com 2009-10-19
[Miva_Corporation] Miva Corporation mailto:jwoods&miva.com.au
[Nancy_Davoust] Nancy Davoust mailto:n.davoust&cablelabs.com
[Norm_Freedman] Norm Freedman mailto:normfree&san.rr.com 2003-08
[Phil_Frisbie] Phil Frisbie mailto:phil.frisbie&gmail.com 2018-12-17
[Prem_Tirilok] Prem Tirilok mailto:Prem.Tirilok&tellabs.com
[Raghurama_Bhat] Raghurama Bhat mailto:raghu&quintus.com
[Raimond_Diederik] Raimond Diederik mailto:rdiederik&descartes.com
[Rene_Fontaine] Rene Fontaine mailto:fontaine_rene&emc.com
[Stanislaw_Skowronek] Stanislaw Skowronek mailto:thesis&elementary.pl
[Takashi_Hoshino] Takashi Hoshino mailto:hoshino&miya.fujifilm.co.jp