Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2024-11-22
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
tdaccess 2910 tcp TDAccess [Tom_Haapanen] [Tom_Haapanen]
tdaccess 2910 udp TDAccess [Tom_Haapanen] [Tom_Haapanen]
blockade 2911 tcp Blockade [Blockade] [Blockade]
blockade 2911 udp Blockade [Blockade] [Blockade]
epicon 2912 tcp Epicon [Michael_Khalandovsky] [Michael_Khalandovsky]
epicon 2912 udp Epicon [Michael_Khalandovsky] [Michael_Khalandovsky]
boosterware 2913 tcp Booster Ware [Ido_Ben_David] [Ido_Ben_David]
boosterware 2913 udp Booster Ware [Ido_Ben_David] [Ido_Ben_David]
gamelobby 2914 tcp Game Lobby [Paul_Ford_Hutchinson] [Paul_Ford_Hutchinson]
gamelobby 2914 udp Game Lobby [Paul_Ford_Hutchinson] [Paul_Ford_Hutchinson]
tksocket 2915 tcp TK Socket [Dino_Ciano] [Dino_Ciano] 2011-03-02
tksocket 2915 udp TK Socket [Dino_Ciano] [Dino_Ciano] 2011-03-02
elvin-server 2916 tcp Elvin Server

IANA assigned this well-formed service name as a replacement for "elvin_server".
elvin_server 2916 tcp Elvin Server This entry is an alias to "elvin-server". This entry is now historic, not usable for use with many common service discovery mechanisms.
elvin-server 2916 udp Elvin Server

IANA assigned this well-formed service name as a replacement for "elvin_server".
elvin_server 2916 udp Elvin Server This entry is an alias to "elvin-server". This entry is now historic, not usable for use with many common service discovery mechanisms.
elvin-client 2917 tcp Elvin Client

IANA assigned this well-formed service name as a replacement for "elvin_client".
[David_Arnold] [David_Arnold]
elvin_client 2917 tcp Elvin Client [David_Arnold] [David_Arnold] This entry is an alias to "elvin-client". This entry is now historic, not usable for use with many common service discovery mechanisms.
elvin-client 2917 udp Elvin Client

IANA assigned this well-formed service name as a replacement for "elvin_client".
[David_Arnold] [David_Arnold]
elvin_client 2917 udp Elvin Client [David_Arnold] [David_Arnold] This entry is an alias to "elvin-client". This entry is now historic, not usable for use with many common service discovery mechanisms.
kastenchasepad 2918 tcp Kasten Chase Pad [Marc_Gauthier] [Marc_Gauthier]
kastenchasepad 2918 udp Kasten Chase Pad [Marc_Gauthier] [Marc_Gauthier]
roboer 2919 tcp roboER [Paul_Snook] [Paul_Snook]
roboer 2919 udp roboER [Paul_Snook] [Paul_Snook]
cesdcdman 2921 tcp CESD Contents Delivery Management [Shinya_Abe] [Shinya_Abe]
cesdcdman 2921 udp CESD Contents Delivery Management [Shinya_Abe] [Shinya_Abe]
2925 Unassigned (FRP-Released 12/7/00)
circle-x 2931 tcp Circle-X [Norm_Freedman_2] [Norm_Freedman_2]
circle-x 2931 udp Circle-X [Norm_Freedman_2] [Norm_Freedman_2]
sm-pas-1 2938 tcp SM-PAS-1
sm-pas-1 2938 udp SM-PAS-1
sm-pas-4 2941 tcp SM-PAS-4
sm-pas-4 2941 udp SM-PAS-4
ottp 2951 tcp OTTP [Brent_Foster] [Brent_Foster]
ottp 2951 udp OTTP [Brent_Foster] [Brent_Foster]
boldsoft-lm 2961 tcp BOLDSOFT-LM [Fredrik_Haglund] [Fredrik_Haglund]
boldsoft-lm 2961 udp BOLDSOFT-LM [Fredrik_Haglund] [Fredrik_Haglund]
netclip 2971 tcp NetClip clipboard daemon [Rudi_Chiarito] [Rudi_Chiarito]
netclip 2971 udp NetClip clipboard daemon [Rudi_Chiarito] [Rudi_Chiarito]
mylxamport 2981 tcp MYLXAMPORT [Wei_Gao] [Wei_Gao]
mylxamport 2981 udp MYLXAMPORT [Wei_Gao] [Wei_Gao]
wkstn-mon 2991 tcp WKSTN-MON [William_David] [William_David]
wkstn-mon 2991 udp WKSTN-MON [William_David] [William_David]
veritas-vis1 2993 tcp VERITAS VIS1
veritas-vis1 2993 udp VERITAS VIS1
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"
gw 3010 tcp Telerate Workstation
ping-pong 3010 udp Telerate Workstation [Timo_Sivonen] [Timo_Sivonen]
trusted-web 3011 tcp Trusted Web
trusted-web 3011 udp Trusted Web
twsdss 3012 tcp Trusted Web Client [Alex_Duncan] [Alex_Duncan]
twsdss 3012 udp Trusted Web Client [Alex_Duncan] [Alex_Duncan]
gilatskysurfer 3013 tcp Gilat Sky Surfer [Yossi_Gal] [Yossi_Gal]
gilatskysurfer 3013 udp Gilat Sky Surfer [Yossi_Gal] [Yossi_Gal]
broker-service 3014 tcp Broker Service

IANA assigned this well-formed service name as a replacement for "broker_service".
[Dale_Bethers] [Dale_Bethers]
broker_service 3014 tcp Broker Service [Dale_Bethers] [Dale_Bethers] This entry is an alias to "broker-service". This entry is now historic, not usable for use with many common service discovery mechanisms.
broker-service 3014 udp Broker Service

IANA assigned this well-formed service name as a replacement for "broker_service".
[Dale_Bethers] [Dale_Bethers]
broker_service 3014 udp Broker Service [Dale_Bethers] [Dale_Bethers] This entry is an alias to "broker-service". This entry is now historic, not usable for use with many common service discovery mechanisms.
nati-dstp 3015 tcp NATI DSTP [Paul_Austin] [Paul_Austin]
nati-dstp 3015 udp NATI DSTP [Paul_Austin] [Paul_Austin]
notify-srvr 3016 tcp Notify Server

IANA assigned this well-formed service name as a replacement for "notify_srvr".
[Hugo_Parra] [Hugo_Parra]
notify_srvr 3016 tcp Notify Server [Hugo_Parra] [Hugo_Parra] This entry is an alias to "notify-srvr". This entry is now historic, not usable for use with many common service discovery mechanisms.
notify-srvr 3016 udp Notify Server

IANA assigned this well-formed service name as a replacement for "notify_srvr".
[Hugo_Parra] [Hugo_Parra]
notify_srvr 3016 udp Notify Server [Hugo_Parra] [Hugo_Parra] This entry is an alias to "notify-srvr". This entry is now historic, not usable for use with many common service discovery mechanisms.
event-listener 3017 tcp Event Listener

IANA assigned this well-formed service name as a replacement for "event_listener".
[Ted_Tronson] [Ted_Tronson]
event_listener 3017 tcp Event Listener [Ted_Tronson] [Ted_Tronson] This entry is an alias to "event-listener". This entry is now historic, not usable for use with many common service discovery mechanisms.
event-listener 3017 udp Event Listener

IANA assigned this well-formed service name as a replacement for "event_listener".
[Ted_Tronson] [Ted_Tronson]
event_listener 3017 udp Event Listener [Ted_Tronson] [Ted_Tronson] This entry is an alias to "event-listener". This entry is now historic, not usable for use with many common service discovery mechanisms.
srvc-registry 3018 tcp Service Registry

IANA assigned this well-formed service name as a replacement for "srvc_registry".
[Mark_Killgore] [Mark_Killgore]
srvc_registry 3018 tcp Service Registry [Mark_Killgore] [Mark_Killgore] This entry is an alias to "srvc-registry". This entry is now historic, not usable for use with many common service discovery mechanisms.
srvc-registry 3018 udp Service Registry

IANA assigned this well-formed service name as a replacement for "srvc_registry".
[Mark_Killgore] [Mark_Killgore]
srvc_registry 3018 udp Service Registry [Mark_Killgore] [Mark_Killgore] This entry is an alias to "srvc-registry". This entry is now historic, not usable for use with many common service discovery mechanisms.
resource-mgr 3019 tcp Resource Manager

IANA assigned this well-formed service name as a replacement for "resource_mgr".
[Gary_Glover] [Gary_Glover]
resource_mgr 3019 tcp Resource Manager [Gary_Glover] [Gary_Glover] This entry is an alias to "resource-mgr". This entry is now historic, not usable for use with many common service discovery mechanisms.
resource-mgr 3019 udp Resource Manager

IANA assigned this well-formed service name as a replacement for "resource_mgr".
[Gary_Glover] [Gary_Glover]
resource_mgr 3019 udp Resource Manager [Gary_Glover] [Gary_Glover] This entry is an alias to "resource-mgr". This entry is now historic, not usable for use with many common service discovery mechanisms.
agriserver 3021 tcp AGRI Server [Frank_Neulichedl] [Frank_Neulichedl]
agriserver 3021 udp AGRI Server [Frank_Neulichedl] [Frank_Neulichedl]
eppc 3031 tcp Remote AppleEvents/PPC Toolbox [Steve_Zellers] [Steve_Zellers]
eppc 3031 udp Remote AppleEvents/PPC Toolbox [Steve_Zellers] [Steve_Zellers]
di-traceware 3041 tcp di-traceware [Carlos_Hung] [Carlos_Hung]
di-traceware 3041 udp di-traceware [Carlos_Hung] [Carlos_Hung]
galaxy-server 3051 tcp Galaxy Server [Michael_Andre] [Michael_Andre]
galaxy-server 3051 udp Galaxy Server [Michael_Andre] [Michael_Andre]
cautcpd 3061 tcp cautcpd
cautcpd 3061 udp cautcpd
xplat-replicate 3071 tcp Crossplatform replication protocol [NetApp_3] [Ravindra_Kuramkote] 2017-08-24
3071 udp Reserved 2017-08-24
tl1-lv 3081 tcp TL1-LV
tl1-lv 3081 udp TL1-LV
tl1-raw 3082 tcp TL1-RAW
tl1-raw 3082 udp TL1-RAW
tl1-telnet 3083 tcp TL1-TELNET [SONET_Internetworkin] [SONET_Internetworkin]
tl1-telnet 3083 udp TL1-TELNET [SONET_Internetworkin] [SONET_Internetworkin]
1ci-smcs 3091 tcp 1Ci Server Management [Ralf_Bensmann] [Ralf_Bensmann]
1ci-smcs 3091 udp 1Ci Server Management [Ralf_Bensmann] [Ralf_Bensmann]
itu-bicc-stc 3097 sctp ITU-T Q.1902.1/Q.2150.3 [Greg_Sidebottom] [Greg_Sidebottom]
opcon-xps 3100 tcp OpCon/xps [David_Bourland] [David_Bourland]
opcon-xps 3100 udp OpCon/xps [David_Bourland] [David_Bourland]
hp-pxpib 3101 tcp HP PolicyXpert PIB Server [Brian_O_Keefe] [Brian_O_Keefe]

Contact Information

ID Name Organization Contact URI Last Updated
[Alex_Duncan] Alex Duncan mailto:alex.duncan&sse.ie
[Blockade] VP - Research & Development mailto:development&blockade.com
[Brent_Foster] Brent Foster mailto:brent.foster&onstreamsystems.com 2006-04
[Brian_O_Keefe] Brian O'Keefe mailto:bokeefe&cnd.hp.com
[Carlos_Hung] Carlos Hung mailto:chung&digisle.net
[Dale_Bethers] Dale Bethers mailto:dbethers&novell.com
[David_Arnold] David Arnold mailto:davida&pobox.com
[David_Bourland] David Bourland mailto:DBourland&smausa.com
[Devrex_Labs] Devrex Labs mailto:robert.friberg&devrex.se 2013-03-29
[Dino_Ciano] Dino Ciano mailto:DCiano&tickets.com 2011-03-02
[Frank_Neulichedl] Frank Neulichedl mailto:frank&websmile.com
[Fredrik_Haglund] Fredrik Haglund mailto:fredik.haglund&boldsoft.com
[Gary_Glover] Gary Glover mailto:gglover&novell.com
[Greg_Sidebottom] Greg Sidebottom mailto:gregside&home.com
[Hugo_Parra] Hugo Parra mailto:hparra&novell.com
[Ido_Ben_David] Ido Ben-David mailto:dgntcom&netvision.net.il
[Marc_Gauthier] Marc Gauthier mailto:mgau&kastenchase.com
[Mark_Killgore] Mark Killgore mailto:MKillgore&novell.com
[Michael_Andre] Michael Andre mailto:mandre&gts-tkts.com
[Michael_Khalandovsky] Michael Khalandovsky mailto:mlk&epicon.com
[NetApp_3] NetApp, Inc. mailto:ravindra.kuramkote&netapp.com 2017-08-24
[Norm_Freedman_2] Norm Freedman mailto:normfree&worldnet.att.net
[Paul_Austin] Paul Austin mailto:paul.austin&natinst.com
[Paul_Ford_Hutchinson] Paul Ford-Hutchinson mailto:paulfordh&uk.ibm.com 2003-01
[Paul_Snook] Paul Snook mailto:paul.snook&itheon.com
[Ralf_Bensmann] Ralf Bensmann mailto:iana&1ci.de
[Ravindra_Kuramkote] Ravindra Kuramkote mailto:ravindra.kuramkote&netapp.com 2017-08-24
[Robert_Friberg] Robert Friberg Devrex Labs mailto:robert.friberg&devrex.se 2013-03-29
[Rudi_Chiarito] Rudi Chiarito mailto:nutello&sweetness.com
[SONET_Internetworkin] SONET Internetworking Forum (SIF) mailto:bwarijsman&lucent.com
[Shinya_Abe] Shinya Abe mailto:abeabe&pfu.co.jp
[Steve_Zellers] Steve Zellers mailto:zellers&apple.com
[Ted_Tronson] Ted Tronson mailto:ttronson&novell.com
[Timo_Sivonen] Timo Sivonen mailto:timo.sivonen&ccmail.dowjones.com
[Tom_Haapanen] Tom Haapanen mailto:tomh&metrics.com
[Wei_Gao] Wei Gao mailto:wei&mylex.com
[William_David] William David mailto:william.david&lmco.com
[Yossi_Gal] Yossi Gal mailto:yossi&gilat.com