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
tnp1-port 4024 tcp TNP1 User Port [Tony_Gibbs] [Tony_Gibbs]
tnp1-port 4024 udp TNP1 User Port [Tony_Gibbs] [Tony_Gibbs]
partimage 4025 tcp Partition Image Port [Franck_Ladurelle] [Franck_Ladurelle]
partimage 4025 udp Partition Image Port [Franck_Ladurelle] [Franck_Ladurelle]
as-debug 4026 tcp Graphical Debug Server [Steve_Halverson] [Steve_Halverson]
as-debug 4026 udp Graphical Debug Server [Steve_Halverson] [Steve_Halverson]
bxp 4027 tcp bitxpress [Morgan_Doyle] [Morgan_Doyle]
bxp 4027 udp bitxpress [Morgan_Doyle] [Morgan_Doyle]
dtserver-port 4028 tcp DTServer Port [Stephen_Aikins] [Stephen_Aikins]
dtserver-port 4028 udp DTServer Port [Stephen_Aikins] [Stephen_Aikins]
ip-qsig 4029 tcp IP Q signaling protocol [Toru_Tachibana] [Toru_Tachibana]
ip-qsig 4029 udp IP Q signaling protocol [Toru_Tachibana] [Toru_Tachibana]
jdmn-port 4030 tcp Accell/JSP Daemon Port [Daegis_Inc] [Chris_Anderson] 2012-07-12
jdmn-port 4030 udp Accell/JSP Daemon Port [Daegis_Inc] [Chris_Anderson] 2012-07-12
suucp 4031 tcp UUCP over SSL [Harald_Welte] [Harald_Welte]
suucp 4031 udp UUCP over SSL [Harald_Welte] [Harald_Welte]
vrts-auth-port 4032 tcp VERITAS Authorization Service [Stefan_Winkel] [Stefan_Winkel]
vrts-auth-port 4032 udp VERITAS Authorization Service [Stefan_Winkel] [Stefan_Winkel]
sanavigator 4033 tcp SANavigator Peer Port [Robert_J_Chansler] [Robert_J_Chansler]
sanavigator 4033 udp SANavigator Peer Port [Robert_J_Chansler] [Robert_J_Chansler]
ubxd 4034 tcp Ubiquinox Daemon [Kit_Smithers] [Kit_Smithers]
ubxd 4034 udp Ubiquinox Daemon [Kit_Smithers] [Kit_Smithers]
wap-push-http 4035 tcp WAP Push OTA-HTTP port
wap-push-http 4035 udp WAP Push OTA-HTTP port
wap-push-https 4036 tcp WAP Push OTA-HTTP secure [Matthieu_Lachance] [Matthieu_Lachance]
wap-push-https 4036 udp WAP Push OTA-HTTP secure [Matthieu_Lachance] [Matthieu_Lachance]
ravehd 4037 tcp RaveHD network control [Jason_Howard] [Jason_Howard] 2006-01
ravehd 4037 udp RaveHD network control [Jason_Howard] [Jason_Howard] 2006-01
fazzt-ptp 4038 tcp Fazzt Point-To-Point
fazzt-ptp 4038 udp Fazzt Point-To-Point
fazzt-admin 4039 tcp Fazzt Administration [Lewis_Wolfgang] [Lewis_Wolfgang] 2006-05
fazzt-admin 4039 udp Fazzt Administration [Lewis_Wolfgang] [Lewis_Wolfgang] 2006-05
yo-main 4040 tcp Yo.net main service [John_Tintor] [John_Tintor]
yo-main 4040 udp Yo.net main service [John_Tintor] [John_Tintor]
houston 4041 tcp Rocketeer-Houston [Johnny_C_Norris_II] [Johnny_C_Norris_II]
houston 4041 udp Rocketeer-Houston [Johnny_C_Norris_II] [Johnny_C_Norris_II]
ldxp 4042 tcp LDXP [Craig_Calef] [Craig_Calef]
ldxp 4042 udp LDXP [Craig_Calef] [Craig_Calef]
nirp 4043 tcp Neighbour Identity Resolution
nirp 4043 udp Neighbour Identity Resolution
ltp 4044 tcp Location Tracking Protocol
ltp 4044 udp Location Tracking Protocol
npp 4045 tcp Network Paging Protocol Known UNAUTHORIZED USE: Port 4045
npp 4045 udp Network Paging Protocol Known UNAUTHORIZED USE: Port 4045
acp-proto 4046 tcp Accounting Protocol
acp-proto 4046 udp Accounting Protocol
ctp-state 4047 tcp Context Transfer Protocol [Hesham_Soliman] [Hesham_Soliman] 2005-11
ctp-state 4047 udp Context Transfer Protocol [Hesham_Soliman] [Hesham_Soliman] 2005-11
4048 Unassigned 2008-04-24
wafs 4049 tcp Wide Area File Services [Yuval_Hager] [Yuval_Hager] 2006-01
wafs 4049 udp Wide Area File Services [Yuval_Hager] [Yuval_Hager] 2006-01
cisco-wafs 4050 tcp Wide Area File Services [Etai_Lev_Ran] [Etai_Lev_Ran] 2005-02
cisco-wafs 4050 udp Wide Area File Services [Etai_Lev_Ran] [Etai_Lev_Ran] 2005-02
cppdp 4051 tcp Cisco Peer to Peer Distribution Protocol [Susan_Sauter] [Susan_Sauter] 2006-07
cppdp 4051 udp Cisco Peer to Peer Distribution Protocol [Susan_Sauter] [Susan_Sauter] 2006-07
interact 4052 tcp VoiceConnect Interact [Jonathan_Custance] [Jonathan_Custance] 2006-07
interact 4052 udp VoiceConnect Interact [Jonathan_Custance] [Jonathan_Custance] 2006-07
ccu-comm-1 4053 tcp CosmoCall Universe Communications Port 1
ccu-comm-1 4053 udp CosmoCall Universe Communications Port 1
ccu-comm-2 4054 tcp CosmoCall Universe Communications Port 2
ccu-comm-2 4054 udp CosmoCall Universe Communications Port 2
ccu-comm-3 4055 tcp CosmoCall Universe Communications Port 3 [Steve_Dellutri_2] [Steve_Dellutri_2] 2006-07
ccu-comm-3 4055 udp CosmoCall Universe Communications Port 3 [Steve_Dellutri_2] [Steve_Dellutri_2] 2006-07
lms 4056 tcp Location Message Service [Sergey_Burnevsky] [Sergey_Burnevsky] 2006-08
lms 4056 udp Location Message Service [Sergey_Burnevsky] [Sergey_Burnevsky] 2006-08
wfm 4057 tcp Servigistics WFM server [Yuri_Machkasov_2] [Yuri_Machkasov_2] 2006-08
wfm 4057 udp Servigistics WFM server [Yuri_Machkasov_2] [Yuri_Machkasov_2] 2006-08
kingfisher 4058 tcp Kingfisher protocol [Vaughan_Wesson] [Vaughan_Wesson] 2006-10
kingfisher 4058 udp Kingfisher protocol [Vaughan_Wesson] [Vaughan_Wesson] 2006-10
dlms-cosem 4059 tcp DLMS/COSEM [Gyozo_Kmethy] [Gyozo_Kmethy] 2006-11
dlms-cosem 4059 udp DLMS/COSEM [Gyozo_Kmethy] [Gyozo_Kmethy] 2006-11
dsmeter-iatc 4060 tcp DSMETER Inter-Agent Transfer Channel

IANA assigned this well-formed service name as a replacement for "dsmeter_iatc".
[John_McCann] [John_McCann] 2006-12
dsmeter_iatc 4060 tcp DSMETER Inter-Agent Transfer Channel [John_McCann] [John_McCann] 2006-12 This entry is an alias to "dsmeter-iatc". This entry is now historic, not usable for use with many common service discovery mechanisms.
dsmeter-iatc 4060 udp DSMETER Inter-Agent Transfer Channel

IANA assigned this well-formed service name as a replacement for "dsmeter_iatc".
[John_McCann] [John_McCann] 2006-12
dsmeter_iatc 4060 udp DSMETER Inter-Agent Transfer Channel [John_McCann] [John_McCann] 2006-12 This entry is an alias to "dsmeter-iatc". This entry is now historic, not usable for use with many common service discovery mechanisms.
ice-location 4061 tcp Ice Location Service (TCP)
ice-location 4061 udp Ice Location Service (TCP)
ice-slocation 4062 tcp Ice Location Service (SSL)
ice-slocation 4062 udp Ice Location Service (SSL)
ice-router 4063 tcp Ice Firewall Traversal Service (TCP)
ice-router 4063 udp Ice Firewall Traversal Service (TCP)
ice-srouter 4064 tcp Ice Firewall Traversal Service (SSL) [Bernard_Normier] [Bernard_Normier] 2006-12
ice-srouter 4064 udp Ice Firewall Traversal Service (SSL) [Bernard_Normier] [Bernard_Normier] 2006-12
avanti-cdp 4065 tcp Avanti Common Data

IANA assigned this well-formed service name as a replacement for "avanti_cdp".
[Steve_Meyer_Sr] [Steve_Meyer_Sr] 2007-02
avanti_cdp 4065 tcp Avanti Common Data [Steve_Meyer_Sr] [Steve_Meyer_Sr] 2007-02 This entry is an alias to "avanti-cdp". This entry is now historic, not usable for use with many common service discovery mechanisms.
avanti-cdp 4065 udp Avanti Common Data

IANA assigned this well-formed service name as a replacement for "avanti_cdp".
[Steve_Meyer_Sr] [Steve_Meyer_Sr] 2007-02
avanti_cdp 4065 udp Avanti Common Data [Steve_Meyer_Sr] [Steve_Meyer_Sr] 2007-02 This entry is an alias to "avanti-cdp". This entry is now historic, not usable for use with many common service discovery mechanisms.
pmas 4066 tcp Performance Measurement and Analysis [Zenon_Fortuna] [Zenon_Fortuna] 2007-02
pmas 4066 udp Performance Measurement and Analysis [Zenon_Fortuna] [Zenon_Fortuna] 2007-02
idp 4067 tcp Information Distribution Protocol [Michaela_Vanderveen] [Michaela_Vanderveen] 2007-02
idp 4067 udp Information Distribution Protocol [Michaela_Vanderveen] [Michaela_Vanderveen] 2007-02
ipfltbcst 4068 tcp IP Fleet Broadcast [Trung_Huu_Tran] [Trung_Huu_Tran] 2007-03
ipfltbcst 4068 udp IP Fleet Broadcast [Trung_Huu_Tran] [Trung_Huu_Tran] 2007-03
minger 4069 tcp Minger Email Address Validation Service [Arvel_Hathcock] [Arvel_Hathcock] 2007-03
minger 4069 udp Minger Email Address Validation Service [Arvel_Hathcock] [Arvel_Hathcock] 2007-03
tripe 4070 tcp Trivial IP Encryption (TrIPE) [Mark_Wooding] [Mark_Wooding] 2007-07-10
tripe 4070 udp Trivial IP Encryption (TrIPE) [Mark_Wooding] [Mark_Wooding] 2007-07-10
aibkup 4071 tcp Automatically Incremental Backup [Volker_Wiegand] [Volker_Wiegand] 2007-07-10
aibkup 4071 udp Automatically Incremental Backup [Volker_Wiegand] [Volker_Wiegand] 2007-07-10
zieto-sock 4072 tcp Zieto Socket Communications [Malcolm_McLean] [Malcolm_McLean] 2007-07-19
zieto-sock 4072 udp Zieto Socket Communications [Malcolm_McLean] [Malcolm_McLean] 2007-07-19

Contact Information

ID Name Organization Contact URI Last Updated
[Arvel_Hathcock] Arvel Hathcock mailto:arvel&altn.com 2007-03
[Bernard_Normier] Bernard Normier mailto:bernard&zeroc.com 2006-12
[Chris_Anderson] Chris Anderson Daegis, Inc. mailto:ianaportmaster&daegis.com 2012-07-31
[Craig_Calef] Craig Calef mailto:craig&katmango.com
[Daegis_Inc] Daegis, Inc. mailto:ianaportmaster&daegis.com 2012-07-31
[Etai_Lev_Ran] Etai Lev-Ran mailto:elevran&cisco.com 2005-02
[Franck_Ladurelle] Franck Ladurelle mailto:ladurelf&partimage.org
[Gyozo_Kmethy] Gyozo Kmethy mailto:gyozo.kmethy&gnarus.hu 2006-11
[Harald_Welte] Harald Welte mailto:laforge&gnumonks.org 2009-01-16
[Hesham_Soliman] Hesham Soliman mailto:H.Soliman&flarion.com 2005-11
[Jason_Howard] Jason Howard mailto:jason&spectsoft.com 2006-01
[John_McCann] John McCann mailto:jmccann&visualclick.com 2006-12
[John_Tintor] John Tintor mailto:jt&yo.net
[Johnny_C_Norris_II] Johnny C. Norris II mailto:jnorris&uiuc.edu
[Jonathan_Custance] Jonathan Custance mailto:jevc&camrivox.com 2006-07
[Kit_Smithers] Kit Smithers mailto:ksmithers&argogroup.com
[Lewis_Wolfgang] Lewis Wolfgang mailto:wolfgang&kencast.com 2006-05
[Malcolm_McLean] Malcolm McLean mailto:malcolmm&zieto.co.za 2007-07-19
[Mark_Wooding] Mark Wooding mailto:mdw&distorted.org.uk 2007-07-10
[Matthieu_Lachance] Matthieu Lachance mailto:matthieu.lachance&openwave.com
[Michaela_Vanderveen] Michaela Vanderveen mailto:mvandervn&yahoo.com 2007-02
[Morgan_Doyle] Morgan Doyle mailto:morgan&mpt.ie
[Robert_J_Chansler] Robert J. Chansler mailto:robert.chansler&mcdata.com
[Sergey_Burnevsky] Sergey Burnevsky mailto:sergey.burnevsky&nokia.com 2006-08
[Stefan_Winkel] Stefan Winkel mailto:stefan&veritas.com 2004-04
[Stephen_Aikins] Stephen Aikins mailto:stephen.aikins&embarcadero.com
[Steve_Dellutri_2] Steve Dellutri mailto:sdellutri&cosmocom.com 2006-07
[Steve_Halverson] Steve Halverson mailto:shalver&us.ibm.com
[Steve_Meyer_Sr] Steve Meyer Sr. mailto:stevem&avanti-tech.com 2007-02
[Susan_Sauter] Susan Sauter mailto:ssauter&cisco.com 2006-07
[Tony_Gibbs] Tony Gibbs mailto:tony.gibbs&europe.simoco.com
[Toru_Tachibana] Toru Tachibana mailto:tatibana&exs.ts.fujitsu.co.jp
[Trung_Huu_Tran] Trung Huu Tran mailto:trung.tran&navy.mil 2007-03
[Vaughan_Wesson] Vaughan Wesson mailto:vaughanw&rtunet.com 2006-10
[Volker_Wiegand] Volker Wiegand mailto:volker.wiegand&t-online.de 2007-07-10
[Yuri_Machkasov_2] Yuri Machkasov mailto:ymachkasov&servigistics.com 2006-08
[Yuval_Hager] Yuval Hager mailto:yuval&avramzon.net 2006-01
[Zenon_Fortuna] Zenon Fortuna mailto:zenon&mips.com 2007-02