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
sf-lm 4546 udp SF License Manager (Sentinel) [Thomas_Koell] [Thomas_Koell]
lanner-lm 4547 tcp Lanner License Manager [Les_Enstone] [Les_Enstone]
lanner-lm 4547 udp Lanner License Manager [Les_Enstone] [Les_Enstone]
synchromesh 4548 tcp Synchromesh [Tom_Hawkins_2] [Tom_Hawkins_2] 2006-02
synchromesh 4548 udp Synchromesh [Tom_Hawkins_2] [Tom_Hawkins_2] 2006-02
aegate 4549 tcp Aegate PMR Service [Nick_Warrington] [Nick_Warrington] 2006-03
aegate 4549 udp Aegate PMR Service [Nick_Warrington] [Nick_Warrington] 2006-03
gds-adppiw-db 4550 tcp Perman I Interbase Server [Leo_Lesage] [Leo_Lesage] 2006-04
gds-adppiw-db 4550 udp Perman I Interbase Server [Leo_Lesage] [Leo_Lesage] 2006-04
ieee-mih 4551 tcp MIH Services [RFC5677]
ieee-mih 4551 udp MIH Services [RFC5677]
menandmice-mon 4552 tcp Men and Mice Monitoring [Carsten_Strotmann] [Carsten_Strotmann] 2009-05-20
menandmice-mon 4552 udp Men and Mice Monitoring [Carsten_Strotmann] [Carsten_Strotmann] 2009-05-20
icshostsvc 4553 tcp ICS host services [Gordan_Vosicki] [Gordan_Vosicki] 2009-09-23
4553 udp Reserved
msfrs 4554 tcp MS FRS Replication [Kev_George] [Kev_George] 2006-09
msfrs 4554 udp MS FRS Replication [Kev_George] [Kev_George] 2006-09
rsip 4555 tcp RSIP Port [RFC3103]
rsip 4555 udp RSIP Port [RFC3103]
dtn-bundle 4556 tcp DTN Bundle TCP CL Protocol [IESG] [IETF_Chair] 2021-02-22 [RFC9174]
dtn-bundle 4556 udp DTN Bundle UDP CL Protocol 2006-11 2014-02-21 [RFC7122]
dtn-bundle 4556 dccp DTN Bundle DCCP CL Protocol 2013-11-12 2014-02-21 [RFC7122] 1685351985
4557 tcp Reserved
mtcevrunqss 4557 udp Marathon everRun Quorum Service Server [David_Schwartz_2] [David_Schwartz_2] 2009-06-18
4558 tcp Reserved
mtcevrunqman 4558 udp Marathon everRun Quorum Service Manager [David_Schwartz_2] [David_Schwartz_2] 2009-06-18
hylafax 4559 tcp HylaFAX [Lee_Howard] [Lee_Howard] 2002-03
hylafax 4559 udp HylaFAX [Lee_Howard] [Lee_Howard] 2002-03
4560-4562 Unassigned
amahi-anywhere 4563 tcp Amahi Anywhere [Amahi] [Carlos_Puchol] 2014-02-27
4563 udp Reserved
4564-4565 Unassigned
kwtc 4566 tcp Kids Watch Time Control Service [Larry_Zarou] [Larry_Zarou] 2006-10
kwtc 4566 udp Kids Watch Time Control Service [Larry_Zarou] [Larry_Zarou] 2006-10
tram 4567 tcp TRAM [Joe_Wesley] [Joe_Wesley]
tram 4567 udp TRAM [Joe_Wesley] [Joe_Wesley]
bmc-reporting 4568 tcp BMC Reporting [Portnoy_Boxman] [Portnoy_Boxman]
bmc-reporting 4568 udp BMC Reporting [Portnoy_Boxman] [Portnoy_Boxman]
iax 4569 tcp Inter-Asterisk eXchange [Benjamin_Kowarsch] [Benjamin_Kowarsch] [RFC5456] Defined TXT keys:
auth plaintext | md5 | rsakeys
userid alphanumeric, additionally '_', '+', '-'
secret any printable ASCII characters
domain any DNS domain name or IP address
extension alphanumeric, additionally '*', '#', '_', '+', '-'
context alphanumeric, additionally '_', '+', '-'
trunk yes | no | 0 | 1
welcome alphanumeric, additionally '*', '#', '_', '+', '-'
voicemail alphanumeric, additionally '*', '#', '_', '+', '-'
reception alphanumeric, additionally '*', '#', '_', '+', '-'
echotest alphanumeric, additionally '*', '#', '_', '+', '-'
ivrtest alphanumeric, additionally '*', '#', '_', '+', '-'
All of these TXT record keys are optional, they may be omitted. Further keys may be added in the future.
iax 4569 udp Inter-Asterisk eXchange [Benjamin_Kowarsch] [Benjamin_Kowarsch] [RFC5456] Defined TXT keys:
auth plaintext | md5 | rsakeys
userid alphanumeric, additionally '_', '+', '-'
secret any printable ASCII characters
domain any DNS domain name or IP address
extension alphanumeric, additionally '*', '#', '_', '+', '-'
context alphanumeric, additionally '_', '+', '-'
trunk yes | no | 0 | 1
welcome alphanumeric, additionally '*', '#', '_', '+', '-'
voicemail alphanumeric, additionally '*', '#', '_', '+', '-'
reception alphanumeric, additionally '*', '#', '_', '+', '-'
echotest alphanumeric, additionally '*', '#', '_', '+', '-'
ivrtest alphanumeric, additionally '*', '#', '_', '+', '-'
All of these TXT record keys are optional, they may be omitted. Further keys may be added in the future.
deploymentmap 4570 tcp Service to distribute and update within a site deployment information for Oracle Communications Suite [Oracle_3] [Dan_Newman] 2013-09-20
4570 udp Reserved
4571-4572 Unassigned
cardifftec-back 4573 tcp A port for communication between a server and client for a custom backup system [CardiffTec] [Benjamin_Misell] 2016-05-19
4573 udp Reserved
4574-4589 Unassigned
rid 4590 tcp RID over HTTP/TLS [IESG] [IETF_Chair] [RFC6546]
4590 udp Reserved
l3t-at-an 4591 tcp HRPD L3T (AT-AN) [Avi_Lior] [Avi_Lior] 2009-02-27
l3t-at-an 4591 udp HRPD L3T (AT-AN) [Avi_Lior] [Avi_Lior] 2009-02-27
4592 tcp Reserved
hrpd-ith-at-an 4592 udp HRPD-ITH (AT-AN) [David_Ott] [David_Ott] 2008-06-05
ipt-anri-anri 4593 tcp IPT (ANRI-ANRI)
ipt-anri-anri 4593 udp IPT (ANRI-ANRI)
ias-session 4594 tcp IAS-Session (ANRI-ANRI)
ias-session 4594 udp IAS-Session (ANRI-ANRI)
ias-paging 4595 tcp IAS-Paging (ANRI-ANRI)
ias-paging 4595 udp IAS-Paging (ANRI-ANRI)
ias-neighbor 4596 tcp IAS-Neighbor (ANRI-ANRI) [David_Ott] [David_Ott] 2007-07-31
ias-neighbor 4596 udp IAS-Neighbor (ANRI-ANRI) [David_Ott] [David_Ott] 2007-07-31
a21-an-1xbs 4597 tcp A21 (AN-1xBS) [David_Ott] [David_Ott] 2006-02
a21-an-1xbs 4597 udp A21 (AN-1xBS) [David_Ott] [David_Ott] 2006-02
a16-an-an 4598 tcp A16 (AN-AN) [David_Ott] [David_Ott] 2005-12
a16-an-an 4598 udp A16 (AN-AN) [David_Ott] [David_Ott] 2005-12
a17-an-an 4599 tcp A17 (AN-AN) [David_Ott] [David_Ott] 2006-02
a17-an-an 4599 udp A17 (AN-AN) [David_Ott] [David_Ott] 2006-02
piranha1 4600 tcp Piranha1
piranha1 4600 udp Piranha1
piranha2 4601 tcp Piranha2 [Primark_Corporation] [Primark_Corporation]
piranha2 4601 udp Piranha2 [Primark_Corporation] [Primark_Corporation]
mtsserver 4602 tcp EAX MTS Server [Pedro_A_Rodriguez] [Pedro_A_Rodriguez] 2008-08-06
4602 udp Reserved
menandmice-upg 4603 tcp Men & Mice Upgrade Agent [Eggert_Thorlacius_2] [Eggert_Thorlacius_2] 2010-01-27
4603 udp Reserved
irp 4604 tcp Identity Registration Protocol [Sixscape_Communications_Pte_Ltd] [Lawrence_E._Hughes] 2014-03-17 2014-08-26
4604 udp Reserved
sixchat 4605 tcp Direct End to End Secure Chat Protocol [Sixscape_Communications_Pte_Ltd] [Lawrence_E._Hughes] 2014-09-11
4605 udp Reserved
sixid 4606 tcp Secure ID to IP registration and lookup [Sixscape_Communications_Pte_Ltd] [Lawrence_E._Hughes] 2020-04-28
4606 udp Reserved
4607-4620 Unassigned
4621 tcp Reserved
ventoso 4621 udp Bidirectional single port remote radio VOIP and Control stream [Ventoso_Integrated_Peripherals] [John_Lindsey] 2016-03-04
4622-4645 Unassigned
dots-signal 4646 tcp Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel Protocol. The service name is used to construct the SRV service names "_dots-signal._udp" and "_dots-signal._tcp" for discovering DOTS servers used to establish DOTS signal channel. [IESG] [IETF_Chair] 2020-01-16 2021-06-14 [RFC8973][RFC9132]
dots-signal 4646 udp Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel Protocol. The service name is used to construct the SRV service names "_dots-signal._udp" and "_dots-signal._tcp" for discovering DOTS servers used to establish DOTS signal channel. [IESG] [IETF_Chair] 2020-01-16 2021-06-14 [RFC8973][RFC9132]
4647-4657 Unassigned
playsta2-app 4658 tcp PlayStation2 App Port
playsta2-app 4658 udp PlayStation2 App Port
playsta2-lob 4659 tcp PlayStation2 Lobby Port [Noam_Rimon] [Noam_Rimon] 2004-12
playsta2-lob 4659 udp PlayStation2 Lobby Port [Noam_Rimon] [Noam_Rimon] 2004-12
smaclmgr 4660 tcp smaclmgr [Hiromi_Taki] [Hiromi_Taki]
smaclmgr 4660 udp smaclmgr [Hiromi_Taki] [Hiromi_Taki]
kar2ouche 4661 tcp Kar2ouche Peer location service [Andy_Krouwel] [Andy_Krouwel]
kar2ouche 4661 udp Kar2ouche Peer location service [Andy_Krouwel] [Andy_Krouwel]
oms 4662 tcp OrbitNet Message Service [Roy_Davies] [Roy_Davies] 2005-08
oms 4662 udp OrbitNet Message Service [Roy_Davies] [Roy_Davies] 2005-08
noteit 4663 tcp Note It! Message Service [Pedro_Alpedrinha] [Pedro_Alpedrinha] 2006-02
noteit 4663 udp Note It! Message Service [Pedro_Alpedrinha] [Pedro_Alpedrinha] 2006-02
ems 4664 tcp Rimage Messaging Server [David_V_Raskin] [David_V_Raskin] 2006-02
ems 4664 udp Rimage Messaging Server [David_V_Raskin] [David_V_Raskin] 2006-02

Contact Information

ID Name Organization Contact URI Last Updated
[Amahi] Amahi mailto:iana&amahi.org 2014-02-27
[Andy_Krouwel] Andy Krouwel mailto:andy&kar2ouche.com
[Avi_Lior] Avi Lior mailto:avi&bridgewatersystems.com 2009-02-27
[Benjamin_Kowarsch] Benjamin Kowarsch mailto:benjamin&sunrise-tel.com 2004-11
[Benjamin_Misell] Benjamin Misell mailto:beninjam174&gmail.com 2016-05-19
[CardiffTec] CardiffTec mailto:beninjam174&gmail.com 2016-05-19
[Carlos_Puchol] Carlos Puchol Amahi mailto:iana&amahi.org 2014-02-27
[Carsten_Strotmann] Carsten Strotmann mailto:carsten.strotmann&menandmice.com 2009-05-20
[Dan_Newman] Dan Newman Oracle Corp. mailto:dan.c.newman&oracle.com 2013-09-20
[David_Ott] David Ott mailto:dott&qualcomm.com 2010-10-15
[David_Schwartz_2] David Schwartz mailto:david.schwartz&marathontechnologies.com 2009-06-18
[David_V_Raskin] David V. Raskin mailto:draskin&rimage.com 2006-02
[Eggert_Thorlacius_2] Eggert Thorlacius mailto:eggi&menandmice.com 2010-01-27
[Gordan_Vosicki] Gordan Vosicki mailto:admin&icsa.ch 2009-09-23
[Hiromi_Taki] Hiromi Taki mailto:stg-togo&saint.nm.fujitsu.co.jp
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[Joe_Wesley] Joe Wesley mailto:joe.wesley&east.sun.com
[John_Lindsey] John Lindsey mailto:john.lindsey&nilesradio.com 2016-03-04
[Kev_George] Kev George mailto:Kev.George&smiths-aerospace.com 2006-09
[Larry_Zarou] Larry Zarou mailto:zarla01&cbsits.com 2006-10
[Lawrence_E._Hughes] Lawrence E. Hughes Sixscape Communications, Ltd. mailto:lhughes&sixscape.com 2014-03-17
[Lee_Howard] Lee Howard mailto:iana&hylafax.org 2002-03
[Leo_Lesage] Leo Lesage mailto:leo.lesage&adp.nl 2006-04
[Les_Enstone] Les Enstone mailto:lenstone&lanner.co.uk
[Nick_Warrington] Nick Warrington mailto:nick.warrington&paconsulting.com 2006-03
[Noam_Rimon] Noam Rimon mailto:noam.rimon&playstation.sony.com 2004-12
[Oracle_3] Oracle Corp. mailto:dan.c.newman&oracle.com 2013-09-20
[Pedro_A_Rodriguez] Pedro A Rodriguez mailto:pedro.rdz&eaxtechnologies.com.mx 2008-08-06
[Pedro_Alpedrinha] Pedro Alpedrinha mailto:pedro.alpedrinha&redevirtual.com 2006-02
[Portnoy_Boxman] Portnoy Boxman mailto:portnoy_boxman&bmc.com 2005-01
[Primark_Corporation] Primark Corporation mailto:joe.boone&primark.com
[Roy_Davies] Roy Davies mailto:rdavies&daq.net 2005-08
[Sixscape_Communications_Pte_Ltd] Sixscape Communications, Pte. Ltd. mailto:lhughes&sixscape.com 2014-08-26
[Thomas_Koell] Thomas Koell mailto:info&sf.com
[Tom_Hawkins_2] Tom Hawkins mailto:tomahawkins&gmail.com 2006-02
[Ventoso_Integrated_Peripherals] Ventoso Integrated Peripherals mailto:john.lindsey&nilesradio.com 2016-03-04