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
worldfusion1 2595 udp World Fusion 1
worldfusion2 2596 tcp World Fusion 2 [World_Fusion] [World_Fusion]
worldfusion2 2596 udp World Fusion 2 [World_Fusion] [World_Fusion]
homesteadglory 2597 tcp Homestead Glory [John_Tokash] [John_Tokash]
homesteadglory 2597 udp Homestead Glory [John_Tokash] [John_Tokash]
citriximaclient 2598 tcp Citrix MA Client [Myk_Willis] [Myk_Willis]
citriximaclient 2598 udp Citrix MA Client [Myk_Willis] [Myk_Willis]
snapd 2599 tcp Snap Discovery [Kevin_Osborn] [Kevin_Osborn]
snapd 2599 udp Snap Discovery [Kevin_Osborn] [Kevin_Osborn]
blwnkl-port 2625 tcp Blwnkl Port [Weng_Chin_Yung] [Weng_Chin_Yung]
blwnkl-port 2625 udp Blwnkl Port [Weng_Chin_Yung] [Weng_Chin_Yung]
msolap-ptp2 2725 tcp MSOLAP PTP2 [Cristian_Petculescu] [Cristian_Petculescu]
msolap-ptp2 2725 udp MSOLAP PTP2 [Cristian_Petculescu] [Cristian_Petculescu]
2825 (unassigned) Possibly assigned
2925 Unassigned (FRP-Released 12/7/00)
origo-native 3001 tcp OrigoDB Server Native Interface [Devrex_Labs] [Robert_Friberg] 2013-03-29 port 3001 previously "Removed on 2006-05-25"
3001 udp Reserved 2013-03-29 port 3001 previously "Removed on 2006-05-25"
arepa-raft 3025 tcp Arepa Raft [Stuart_Schaefer] [Stuart_Schaefer]
arepa-raft 3025 udp Arepa Raft [Stuart_Schaefer] [Stuart_Schaefer]
a13-an 3125 tcp A13-AN Interface [Douglas_Knisely] [Douglas_Knisely]
a13-an 3125 udp A13-AN Interface [Douglas_Knisely] [Douglas_Knisely]
fcip-port 3225 tcp FCIP [RFC3821]
fcip-port 3225 udp FCIP [RFC3821]
hicp 3250 tcp HMS hicp port [Joel_Palsson] [Joel_Palsson] 2002-02
hicp 3250 udp HMS hicp port [Joel_Palsson] [Joel_Palsson] 2002-02
sysscanner 3251 tcp Sys Scanner [Dick_Georges] [Dick_Georges] 2002-02
sysscanner 3251 udp Sys Scanner [Dick_Georges] [Dick_Georges] 2002-02
dhe 3252 tcp DHE port [Fabrizio_Massimo_Fer] [Fabrizio_Massimo_Fer] 2002-02
dhe 3252 udp DHE port [Fabrizio_Massimo_Fer] [Fabrizio_Massimo_Fer] 2002-02
pda-data 3253 tcp PDA Data
pda-data 3253 udp PDA Data
pda-sys 3254 tcp PDA System [Jian_Fan] [Jian_Fan] 2002-02
pda-sys 3254 udp PDA System [Jian_Fan] [Jian_Fan] 2002-02
semaphore 3255 tcp Semaphore Connection Port [Jay_Eckles] [Jay_Eckles] 2002-02
semaphore 3255 udp Semaphore Connection Port [Jay_Eckles] [Jay_Eckles] 2002-02
cpqrpm-agent 3256 tcp Compaq RPM Agent Port
cpqrpm-agent 3256 udp Compaq RPM Agent Port
cpqrpm-server 3257 tcp Compaq RPM Server Port [Royal_King] [Royal_King] 2002-02
cpqrpm-server 3257 udp Compaq RPM Server Port [Royal_King] [Royal_King] 2002-02
ivecon-port 3258 tcp Ivecon Server Port [Serguei_Tevs] [Serguei_Tevs] 2002-02
ivecon-port 3258 udp Ivecon Server Port [Serguei_Tevs] [Serguei_Tevs] 2002-02
epncdp2 3259 tcp Epson Network Common Devi [Oishi_Toshiaki] [Oishi_Toshiaki] 2002-02
epncdp2 3259 udp Epson Network Common Devi [Oishi_Toshiaki] [Oishi_Toshiaki] 2002-02
active-net 3322-3325 Active Networks [Bob_Braden_2] [Bob_Braden_2]
agps-port 3425 tcp AGPS Access Port [Kristoffer_Nilsson] [Kristoffer_Nilsson] 2002-02
agps-port 3425 udp AGPS Access Port [Kristoffer_Nilsson] [Kristoffer_Nilsson] 2002-02
eisport 3525 tcp EIS Server port [Paul_Kraus] [Paul_Kraus] 2002-06
eisport 3525 udp EIS Server port [Paul_Kraus] [Paul_Kraus] 2002-06
volley 3625 tcp Volley [David_Catmull] [David_Catmull] 2002-10
volley 3625 udp Volley [David_Catmull] [David_Catmull] 2002-10
na-er-tip 3725 tcp Netia NA-ER Port [Jean_Pierre_Garcia] [Jean_Pierre_Garcia] 2003-04
na-er-tip 3725 udp Netia NA-ER Port [Jean_Pierre_Garcia] [Jean_Pierre_Garcia] 2003-04
ffserver 3825 tcp Antera FlowFusion Process Simulation [Armin_Liebchen] [Armin_Liebchen] 2007-06
ffserver 3825 udp Antera FlowFusion Process Simulation [Armin_Liebchen] [Armin_Liebchen] 2007-06
zmp 3925 tcp Zoran Media Port [Gerard_Cerchio] [Gerard_Cerchio] 2003-11
zmp 3925 udp Zoran Media Port [Gerard_Cerchio] [Gerard_Cerchio] 2003-11
partimage 4025 tcp Partition Image Port [Franck_Ladurelle] [Franck_Ladurelle]
partimage 4025 udp Partition Image Port [Franck_Ladurelle] [Franck_Ladurelle]
opsview-envoy 4125 tcp Opsview Envoy [Ton_Voon] [Ton_Voon] 2008-09-26
opsview-envoy 4125 udp Opsview Envoy [Ton_Voon] [Ton_Voon] 2008-09-26
geognosisadmin 4325 tcp Cadcorp GeognoSIS Administrator [Computer_Aided_Development_Corporation_Ltd] [Martin_Daly] 2022-08-12
geognosisman 4325 udp Cadcorp GeognoSIS Administrator [Computer_Aided_Development_Corporation_Ltd] [Martin_Daly] 2022-08-12
netrockey6 4425 tcp NetROCKEY6 SMART Plus Service [Feitian_Technologies] [Feitian_Technologies] 2010-09-15
netrockey6 4425 udp NetROCKEY6 SMART Plus Service [Feitian_Technologies] [Feitian_Technologies] 2010-09-15
a25-fap-fgw 4502 sctp A25 (FAP-FGW) [ThreeGPP_2] [Zhiming_Li] 2012-01-11
truckstar 4725 tcp TruckStar Service [Brian_Toothill] [Brian_Toothill] 2010-10-15
truckstar 4725 udp TruckStar Service [Brian_Toothill] [Brian_Toothill] 2010-10-15
scpi-raw 5025 tcp SCPI-RAW [IVI_Foundation] [Larry_Ostheimer] 2021-05-06
scpi-raw 5025 udp SCPI-RAW [IVI_Foundation] [Larry_Ostheimer] 2021-05-06
hp-server 5225 tcp HP Server [Brett_Green_2] [Brett_Green_2]
hp-server 5225 udp HP Server [Brett_Green_2] [Brett_Green_2]
soagateway 5250 tcp soaGateway [Greg_Bodine] [Greg_Bodine] 2002-02
soagateway 5250 udp soaGateway [Greg_Bodine] [Greg_Bodine] 2002-02
caevms 5251 tcp CA eTrust VM Service [Kevin_Bond] [Kevin_Bond] 2004-11
caevms 5251 udp CA eTrust VM Service [Kevin_Bond] [Kevin_Bond] 2004-11
movaz-ssc 5252 tcp Movaz SSC [Lou_Berger] [Lou_Berger] 2004-11
movaz-ssc 5252 udp Movaz SSC [Lou_Berger] [Lou_Berger] 2004-11
kpdp 5253 tcp Kohler Power Device Protocol [Bill_Gross] [Bill_Gross] 2010-11-01
5253 udp Reserved
logcabin 5254 tcp LogCabin storage service [Diego_Ongaro] [Diego_Ongaro] 2015-04-14
5254 udp Reserved
5255-5263 Unassigned
br-channel 5425 tcp Beyond Remote Command Channel [Michael_Berg] [Michael_Berg] 2005-08
br-channel 5425 udp Beyond Remote Command Channel [Michael_Berg] [Michael_Berg] 2005-08
coap 5683 udp Constrained Application Protocol [IESG] [IETF_Chair] 2011-06-13 2013-07-25 [RFC7252]
coaps 5684 udp DTLS-secured CoAP [IESG] [IETF_Chair] 2013-07-25 [RFC7252]
ms-ilm 5725 tcp Microsoft Identity Lifecycle Manager [Rob_Ward] [Rob_Ward]
5725 udp Reserved 2008-05-02
p25cai 6082 udp APCO Project 25 Common Air Interface - UDP encapsulation [APCO_Project] [APCO_Project] 2011-05-13
6125-6129 Unassigned
6245-6250 Unassigned
tl1-raw-ssl 6251 tcp TL1 Raw Over SSL/TLS [Jim_Humphreys] [Jim_Humphreys] 2008-01-29
tl1-raw-ssl 6251 udp TL1 Raw Over SSL/TLS [Jim_Humphreys] [Jim_Humphreys] 2008-01-29
tl1-ssh 6252 tcp TL1 over SSH [Jim_Humphreys] [Jim_Humphreys] 2008-01-25
tl1-ssh 6252 udp TL1 over SSH [Jim_Humphreys] [Jim_Humphreys] 2008-01-25
crip 6253 tcp CRIP [Mike_Rodbell] [Mike_Rodbell]
crip 6253 udp CRIP [Mike_Rodbell] [Mike_Rodbell]
6254-6266 Unassigned
dt-mgmtsvc 6325 tcp Double-Take Management Service [Carbonite_Inc] [James_Wilkinson] 2012-06-06 2019-08-23
6325 udp Reserved
syslog-tls 6514 tcp Syslog over TLS [RFC5425]

Contact Information

ID Name Organization Contact URI Last Updated
[APCO_Project] Steve Glass APCO Project 25 mailto:admin&sedition.org.au 2011-05-13
[Armin_Liebchen] Armin Liebchen mailto:armin&anteradesign.com 2007-06
[Bill_Gross] Bill Gross mailto:william.gross&kohler.com 2010-11-01
[Bob_Braden_2] Bob Braden mailto:braden&isi.edu
[Brett_Green_2] Brett Green mailto:Brett_Green&hp.com
[Brian_Toothill] Brian Toothill mailto:brian.toothill&touchstar.co.uk 2010-10-15
[Carbonite_Inc] Carbonite, Inc. mailto:jwilkinson&carbonite.com 2019-08-23
[Computer_Aided_Development_Corporation_Ltd] Computer Aided Development Corporation Ltd (Cadcorp) mailto:martin.daly&cadcorp.com 2022-08-12
[Cristian_Petculescu] Cristian Petculescu mailto:cristp&microsoft.com
[David_Catmull] David Catmull mailto:uncommon&uncommonplace.com 2006-01
[Devrex_Labs] Devrex Labs mailto:robert.friberg&devrex.se 2013-03-29
[Dick_Georges] Dick Georges mailto:georges&monaco.net 2002-02
[Diego_Ongaro] Diego Ongaro mailto:ongaro&cs.stanford.edu 2015-04-14
[Douglas_Knisely] Douglas Knisely mailto:dnk&lucent.com
[Fabrizio_Massimo_Fer] Fabrizio Massimo Ferrara mailto:fmf&gesi.it 2002-02
[Feitian_Technologies] Feitian Technologies mailto:product&ftsafe.com 2010-09-15
[Franck_Ladurelle] Franck Ladurelle mailto:ladurelf&partimage.org
[Gerard_Cerchio] Gerard Cerchio mailto:gjpc&circlesoft.com 2003-11
[Greg_Bodine] Greg Bodine mailto:gregory.bodine&ca.com 2002-02
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[IVI_Foundation] Interchangeable Virtual Instruments Foundation, Inc. mailto:ivi.contact&ivifoundation.org 2021-05-06
[James_Wilkinson] James Wilkinson mailto:jwilkinson&carbonite.com 2019-08-23
[Jay_Eckles] Jay Eckles mailto:ecklesweb&yahoo.com 2002-02
[Jean_Pierre_Garcia] Jean-Pierre Garcia mailto:jp.garcia&netia.net 2003-04
[Jian_Fan] Jian Fan mailto:fjian&dmfsys.com 2002-02
[Jim_Humphreys] Jim Humphreys mailto:jhumphre&ciena.com 2008-01-29
[Joel_Palsson] Joel Palsson HMS Industrial Networks AB mailto:ianacontact&hms.se 2002-02
[John_Tokash] John Tokash mailto:jtokash&homestead.com
[Kevin_Bond] Kevin Bond mailto:kevin.bond&ca.com 2004-11
[Kevin_Osborn] Kevin Osborn mailto:kosborn&snapappliance.com
[Kristoffer_Nilsson] Kristoffer Nilsson mailto:kristoffer.nilsson&hutchison3g.com 2002-02
[Larry_Ostheimer] Larry Ostheimer mailto:larry_ostheimer&keysight.com 2021-05-06
[Lou_Berger] Lou Berger mailto:lberger&movaz.com 2004-11
[Martin_Daly] Martin Daly mailto:martin.daly&cadcorp.com 2022-08-12
[Michael_Berg] Michael Berg mailto:mike&dataapples.com 2005-08
[Mike_Rodbell] Mike Rodbell mailto:mrodbell&ciena.com
[Myk_Willis] Myk Willis mailto:myk.willis&citrix.com
[Oishi_Toshiaki] Oishi Toshiaki SEIKO EPSON Corporation mailto:Oishi.Toshiaki&exc.epson.co.jp 2002-02
[Paul_Kraus] Paul Kraus mailto:paul.kraus&veritas.com 2002-06
[Rob_Ward] Rob Ward mailto:RobWard&microsoft.com 2008-05-02
[Robert_Friberg] Robert Friberg Devrex Labs mailto:robert.friberg&devrex.se 2013-03-29
[Royal_King] Royal King mailto:royal.king&compaq.com 2002-02
[Serguei_Tevs] Serguei Tevs mailto:STevs&ivecon.com 2002-02
[Stuart_Schaefer] Stuart Schaefer mailto:sschaefer&softricity.com
[ThreeGPP_2] 3GPP2 mailto:lizhiming&huawei.com 2012-01-11
[Ton_Voon] Ton Voon mailto:ton.voon&opsera.com 2008-09-26
[Weng_Chin_Yung] Weng Chin (Winson) Yung mailto:Winson_Yung&3com.com
[World_Fusion] World Fusion mailto:net&worldfusion.com
[Zhiming_Li] Zhiming Li 3GPP2 mailto:lizhiming&huawei.com 2012-01-11