Service Name and Transport Protocol Port Number Registry

Last Updated
2017-08-14
Expert(s)
TCP/UDP: Joe Touch; Eliot Lear, Allison Mankin, Markku Kojo, Kumiko Ono, Martin Stiemerling, 
Lars Eggert, Alexey Melnikov, Wes Eddy, Alexander Zimmermann, Brian Trammell, and Jana Iyengar
SCTP: Allison Mankin and 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 difference uses of these ranges is 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.                                                   *
************************************************************************
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Service Name Port Number Transport Protocol Description Assignee Contact Registration Date Modification Date Reference Service Code Known Unauthorized Uses Assignment Notes
sxuptp 19540 udp SXUPTP [Keiji_Okuma] [Keiji_Okuma] 2002-08
jcp 19541 tcp JCP Client [Yuji_Sasaki] [Yuji_Sasaki]
jcp 19541 udp JCP Client [Yuji_Sasaki] [Yuji_Sasaki]
19542-19787 Unassigned
mle 19788 udp Mesh Link Establishment [IESG] [IETF_Chair] 2012-12-18
19788 tcp Reserved
19789-19997 Unassigned
iec-104-sec 19998 tcp IEC 60870-5-104 process control - secure [Grant_Gilchrist] [Grant_Gilchrist] 2010-10-18
19998 udp Reserved
dnp-sec 19999 tcp Distributed Network Protocol - Secure [Grant_Gilchrist] [Grant_Gilchrist] 2008-08-04
dnp-sec 19999 udp Distributed Network Protocol - Secure [Grant_Gilchrist] [Grant_Gilchrist] 2008-08-04
dnp 20000 tcp DNP [Michael_Thesing] [Michael_Thesing]
dnp 20000 udp DNP [Michael_Thesing] [Michael_Thesing]
microsan 20001 tcp MicroSAN [Thomas_E_Ludwig] [Thomas_E_Ludwig] 2004-02
microsan 20001 udp MicroSAN [Thomas_E_Ludwig] [Thomas_E_Ludwig] 2004-02
commtact-http 20002 tcp Commtact HTTP [Tomas_Svoboda] [Tomas_Svoboda] 2004-12
commtact-http 20002 udp Commtact HTTP [Tomas_Svoboda] [Tomas_Svoboda] 2004-12
commtact-https 20003 tcp Commtact HTTPS [Tomas_Svoboda] [Tomas_Svoboda] 2004-12
commtact-https 20003 udp Commtact HTTPS [Tomas_Svoboda] [Tomas_Svoboda] 2004-12
20004 Unassigned
openwebnet 20005 tcp OpenWebNet protocol for electric network [BTicino_S_p_A] [BTicino_S_p_A] 2008-04-09
openwebnet 20005 udp OpenWebNet protocol for electric network [BTicino_S_p_A] [BTicino_S_p_A] 2008-04-09
20006-20011 Unassigned
20012 tcp Reserved
ss-idi-disc 20012 udp Samsung Interdevice Interaction discovery [Hong_Jungkih] [Hong_Jungkih]
ss-idi 20013 tcp Samsung Interdevice Interaction [Hong_Jungkih] [Hong_Jungkih]
20013 udp Reserved
opendeploy 20014 tcp OpenDeploy Listener [Todd_Scallan] [Todd_Scallan] 2005-08
opendeploy 20014 udp OpenDeploy Listener [Todd_Scallan] [Todd_Scallan] 2005-08
20015-20033 Unassigned
nburn-id 20034 tcp NetBurner ID Port

IANA assigned this well-formed service name as a replacement for "nburn_id".
[Paul_Breed] [Paul_Breed] 2003-11
nburn_id 20034 tcp NetBurner ID Port [Paul_Breed] [Paul_Breed] 2003-11 This entry is an alias to "nburn-id". This entry is now historic, not usable for use with many common service discovery mechanisms.
nburn-id 20034 udp NetBurner ID Port

IANA assigned this well-formed service name as a replacement for "nburn_id".
[Paul_Breed] [Paul_Breed] 2003-11
nburn_id 20034 udp NetBurner ID Port [Paul_Breed] [Paul_Breed] 2003-11 This entry is an alias to "nburn-id". This entry is now historic, not usable for use with many common service discovery mechanisms.
20035-20045 Unassigned
tmophl7mts 20046 tcp TMOP HL7 Message Transfer Service [Tim_Riley] [Tim_Riley] 2009-07-31
tmophl7mts 20046 udp TMOP HL7 Message Transfer Service [Tim_Riley] [Tim_Riley] 2009-07-31
20047-20047 Unassigned
mountd 20048 tcp NFS mount protocol [Nicolas_Williams] [Nicolas_Williams] 2010-08-09
mountd 20048 udp NFS mount protocol [Nicolas_Williams] [Nicolas_Williams] 2010-08-09
nfsrdma 20049 tcp Network File System (NFS) over RDMA [RFC5666]
nfsrdma 20049 udp Network File System (NFS) over RDMA [RFC5666]
nfsrdma 20049 sctp Network File System (NFS) over RDMA [RFC5666]
20050-20056 Unassigned
avesterra 20057 tcp AvesTerra Hypergraph Transfer Protocol (HGTP) [Georgetown_University] [J.C._Smart] 2016-06-06
20057 udp Reserved
20058-20166 Unassigned
tolfab 20167 tcp TOLfab Data Change [Pierre_Couderc] [Pierre_Couderc] 2006-03
tolfab 20167 udp TOLfab Data Change [Pierre_Couderc] [Pierre_Couderc] 2006-03
20168-20201 Unassigned
ipdtp-port 20202 tcp IPD Tunneling Port [Vikki_Yin_Wei] [Vikki_Yin_Wei] 2003-01
ipdtp-port 20202 udp IPD Tunneling Port [Vikki_Yin_Wei] [Vikki_Yin_Wei] 2003-01
20203-20221 Unassigned
ipulse-ics 20222 tcp iPulse-ICS [Meggie_Garica_Woodru] [Meggie_Garica_Woodru]
ipulse-ics 20222 udp iPulse-ICS [Meggie_Garica_Woodru] [Meggie_Garica_Woodru]
20223-20479 Unassigned
emwavemsg 20480 tcp emWave Message Service [Harald_Striepe] [Harald_Striepe] 2008-02-14
emwavemsg 20480 udp emWave Message Service [Harald_Striepe] [Harald_Striepe] 2008-02-14
20481-20669 Unassigned
track 20670 tcp Track [Michael_Sweet] [Michael_Sweet]
track 20670 udp Track [Michael_Sweet] [Michael_Sweet]
20671-20998 Unassigned
athand-mmp 20999 tcp At Hand MMP [Stepan_Riha] [Stepan_Riha]
athand-mmp 20999 udp AT Hand MMP [Stepan_Riha] [Stepan_Riha]
irtrans 21000 tcp IRTrans Control [Marcus_Mueller] [Marcus_Mueller] 2004-11
irtrans 21000 udp IRTrans Control [Marcus_Mueller] [Marcus_Mueller] 2004-11
21001-21009 Unassigned
notezilla-lan 21010 tcp Notezilla.Lan Server [Conceptworld_Corporation] [Gautam_Jain] 2013-08-20
21010 udp Reserved
21011-21220 Unassigned
aigairserver 21221 tcp Services for Air Server [AIG_S.L.] [Edelmiro_Gonzalez_Martinez] 2017-03-16
21221 udp Reserved
21222-21552 Unassigned
rdm-tfs 21553 tcp Raima RDM TFS [Paul_Johnson] [Paul_Johnson] 2011-05-02
21553 udp Reserved
dfserver 21554 tcp MineScape Design File Server [Michael_Purser] [Michael_Purser] 2006-06
dfserver 21554 udp MineScape Design File Server [Michael_Purser] [Michael_Purser] 2006-06
21555-21589 Unassigned
vofr-gateway 21590 tcp VoFR Gateway [Marty_Borden] [Marty_Borden]
vofr-gateway 21590 udp VoFR Gateway [Marty_Borden] [Marty_Borden]
21591-21799 Unassigned
tvpm 21800 tcp TVNC Pro Multiplexing [Brian_Blevins] [Brian_Blevins]
tvpm 21800 udp TVNC Pro Multiplexing [Brian_Blevins] [Brian_Blevins]
21801-21844 Unassigned
webphone 21845 tcp webphone [Toby_Hosterman] [Toby_Hosterman]
webphone 21845 udp webphone [Toby_Hosterman] [Toby_Hosterman]
netspeak-is 21846 tcp NetSpeak Corp. Directory Services [Toby_Hosterman] [Toby_Hosterman]
netspeak-is 21846 udp NetSpeak Corp. Directory Services [Toby_Hosterman] [Toby_Hosterman]
netspeak-cs 21847 tcp NetSpeak Corp. Connection Services [Toby_Hosterman] [Toby_Hosterman]
netspeak-cs 21847 udp NetSpeak Corp. Connection Services [Toby_Hosterman] [Toby_Hosterman]
netspeak-acd 21848 tcp NetSpeak Corp. Automatic Call Distribution [Toby_Hosterman] [Toby_Hosterman]
netspeak-acd 21848 udp NetSpeak Corp. Automatic Call Distribution [Toby_Hosterman] [Toby_Hosterman]
netspeak-cps 21849 tcp NetSpeak Corp. Credit Processing System [Toby_Hosterman] [Toby_Hosterman]
netspeak-cps 21849 udp NetSpeak Corp. Credit Processing System [Toby_Hosterman] [Toby_Hosterman]
21850-21999 Unassigned
snapenetio 22000 tcp SNAPenetIO [Kevin_Kuhns] [Kevin_Kuhns]
snapenetio 22000 udp SNAPenetIO [Kevin_Kuhns] [Kevin_Kuhns]
optocontrol 22001 tcp OptoControl [Kevin_Kuhns] [Kevin_Kuhns]
optocontrol 22001 udp OptoControl [Kevin_Kuhns] [Kevin_Kuhns]
optohost002 22002 tcp Opto Host Port 2 [Doug_Leany] [Doug_Leany] 2006-09
optohost002 22002 udp Opto Host Port 2 [Doug_Leany] [Doug_Leany] 2006-09

People

ID Name Organization Contact URI Last Updated
[AIG_S.L.] AIG S.L. mailto:pitin&aigclassic.com 2017-03-16
[BTicino_S_p_A] BTicino S.p.A. mailto:admin-myopen&myopen-bticino.it 2008-04-09
[Brian_Blevins] Brian Blevins mailto:brian.blevins&tridia.com
[Conceptworld_Corporation] Conceptworld Corporation mailto:admin&conceptworld.com 2013-08-20
[Doug_Leany] Doug Leany mailto:DLEANY&opto22.com 2006-09
[Edelmiro_Gonzalez_Martinez] Edelmiro_Gonzalez_Martinez AIG S.L. mailto:pitin&aigclassic.com 2017-03-16
[Gautam_Jain] Gautam Jain Conceptworld Corporation mailto:admin&conceptworld.com 2013-08-20
[Georgetown_University] Georgetown University mailto:smart&georgetown.edu 2016-06-06
[Grant_Gilchrist] Grant Gilchrist mailto:grant&enernex.com 2010-10-18
[Harald_Striepe] Harald Striepe mailto:harald&quantumintech.com 2008-02-14
[Hong_Jungkih] Hong, Jungkih mailto:jungkih.hong&samsung.com 2010-09-20
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[J.C._Smart] J.C. Smart mailto:smart&georgetown.edu 2016-06-06
[Keiji_Okuma] Keiji Okuma mailto:okuma&silex.jp 2005-08
[Kevin_Kuhns] Kevin Kuhns mailto:kkuhns&opto22.com
[Marcus_Mueller] Marcus Mueller mailto:marcus&irtrans.de 2004-11
[Marty_Borden] Marty Borden mailto:mborden&tollbridgetech.com
[Meggie_Garica_Woodru] Meggie Garica-Woodruff mailto:ipulse&ericsson.com
[Michael_Purser] Michael Purser mailto:mrp&mincom.com 2006-06
[Michael_Sweet] Michael Sweet mailto:msweet&ctr.nawcad.navy.mil
[Michael_Thesing] Michael Thesing mailto:michael.thesing&acsatlanta.com
[Nicolas_Williams] Nicolas Williams mailto:Nicolas.Williams&oracle.com 2010-08-09
[Paul_Breed] Paul Breed mailto:paul&netburner.com 2003-11
[Paul_Johnson] Paul Johnson mailto:paul.johnson&raima.com 2011-05-02
[Pierre_Couderc] Pierre Couderc mailto:pcouderc&tol.fr 2006-03
[Stepan_Riha] Stepan Riha mailto:stepan.riha&hand.com
[Thomas_E_Ludwig] Thomas E. Ludwig mailto:tom.ludwig&zetera.com 2004-02
[Tim_Riley] Tim Riley mailto:rileyt&saic.com 2009-07-31
[Toby_Hosterman] Toby Hosterman mailto:root&netspeak.com
[Todd_Scallan] Todd Scallan mailto:tscallan&interwoven.com 2005-08
[Tomas_Svoboda] Tomas Svoboda mailto:svoboda&infima.cz 2004-12
[Vikki_Yin_Wei] Vikki Yin Wei mailto:vikki&ipdynamics.com 2003-01
[Yuji_Sasaki] Yuji Sasaki mailto:sasaki&silex.jp