Service Name and Transport Protocol Port Number Registry
Last Updated
- 2026-10-22
Expert(s)
- TCP/UDP: Joe Touch; Eliot Lear, Kumiko Ono, Wes Eddy, Brian Trammell, and Michael Scharf
- SCTP: Michael Tuexen
- DCCP: Eddie Kohler and Yoshifumi Nishida
Reference
- RFC 6335: Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry
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 basis, as described in RFC 6335.
Port numbers are divided into three ranges, with their uses and assignment procedures specified in Section 8.1.2 of RFC 6335:
- System Ports (0-1023) are assigned using the IETF Review or IESG Approval procedures.
- User Ports (1024-49151) are assigned using the IETF Review, IESG Approval, or Expert Review procedures.
- Dynamic and/or Private Ports (49152-65535) are not assigned.
The registration procedures for service names and port numbers are specified in RFC 6335, while the registration policies referenced above are defined in RFC 8126.
Assigned ports both System and User ports SHOULD NOT be used without or prior to IANA registration.
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.
Registration Forms
- To request a new assignment, please use the Application for Service Names and User Port Numbers form.
- To modify an existing assignment, please use the Modify a Port Number Assignment form.
Available Formats
| Service Name | Port Number | Transport Protocol | Description | Assignee | Contact | Registration Date | Modification Date | Reference | Service Code | Unauthorized Use Reported | Assignment Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 36462 | tcp | Reserved | |||||||||
| 36462 | udp | Reserved | |||||||||
| xw-control | 36462 | sctp | Xw-Control Plane (3GPP) | Boubacar KIMNBA DIT ADAMOU | Boubacar KIMNBA DIT ADAMOU | 2015-11-13 | |||||
| 36463-36523 | Unassigned | ||||||||||
| febooti-aw | 36524 | tcp | Febooti Automation Workshop | Maris Bormanis | Maris Bormanis | 2011-06-10 | |||||
| 36524 | udp | Reserved | |||||||||
| 36525-36601 | Unassigned | ||||||||||
| observium-agent | 36602 | tcp | Observium statistics collection agent | Observium | Adam Armstrong | 2013-05-10 | |||||
| 36602 | udp | Reserved | |||||||||
| 36603-36699 | Unassigned | ||||||||||
| mapx | 36700 | tcp | MapX communication | MicroTechniX | Yarochkin Michail | 2014-10-13 | |||||
| 36700 | udp | Reserved | |||||||||
| 36701-36864 | Unassigned | ||||||||||
| kastenxpipe | 36865 | tcp | KastenX Pipe | Guy Cheng | Guy Cheng | ||||||
| kastenxpipe | 36865 | udp | KastenX Pipe | Guy Cheng | Guy Cheng | ||||||
| 36866-37471 | Unassigned | ||||||||||
| 37476-37482 | Unassigned | ||||||||||
| 37484-37600 | Unassigned | ||||||||||
| eftp | 37601 | tcp | Epipole File Transfer Protocol | Epipole Limited | Colin Buchanan | 2014-11-13 | |||||
| 37601 | udp | Reserved | |||||||||
| 37602-37653 | Unassigned | ||||||||||
| unisys-eportal | 37654 | tcp | Unisys ClearPath ePortal | Sung U. Ro | Sung U. Ro | 2006-01 | |||||
| unisys-eportal | 37654 | udp | Unisys ClearPath ePortal | Sung U. Ro | Sung U. Ro | 2006-01 | |||||
| 37655-37999 | Unassigned | ||||||||||
| 38423-38461 | Unassigned | ||||||||||
| 38462 | tcp | Reserved | |||||||||
| 38462 | udp | Reserved | |||||||||
| e1-interface | 38462 | sctp | E1 signalling transport (3GPP) | Huawei Technologies France | Yang Xudong; Issam Toufik | 2018-11-06 | 2018-11-15 | ||||
| 38463-38471 | Unassigned | ||||||||||
| 38473-38637 | Unassigned | ||||||||||
| psqlmws | 38638 | tcp | Premier SQL Middleware Server | Brain Patchwork DX, LLC. | Ozz Nixon | 2022-02-15 | |||||
| 38638 | udp | Reserved | |||||||||
| 38639-38799 | Unassigned | ||||||||||
| 38801-38864 | Unassigned | ||||||||||
| secrmmsafecopya | 38865 | tcp | Security approval process for use of the secRMM SafeCopy program | Squadra Technologies | Anthony LaMark | 2012-03-14 | |||||
| 38865 | udp | Reserved | |||||||||
| 38866-39062 | Unassigned | ||||||||||
| vroa | 39063 | tcp | Children's hearing test/Telemedicine | Hearing Australia | Dan Zhou | 2021-12-23 | |||||
| 39063 | udp | Reserved | |||||||||
| 39064-39680 | Unassigned | ||||||||||
| turbonote-1 | 39681 | tcp | TurboNote Default Port | Peter Hyde | Peter Hyde | ||||||
| turbonote-1 | 39681 | udp | TurboNote Default Port | Peter Hyde | Peter Hyde | ||||||
| 39682-39999 | Unassigned | ||||||||||
| crestron-cips | 41796 | tcp | Crestron Secure Control Port | Crestron Electronics, Inc. | John Pavlik | 2012-06-27 | 2019-10-17 | ||||
| 41796 | udp | Reserved | |||||||||
| 44323 | udp | Unassigned | "pcp" assignment withdrawn, moved to port 5351 per RFC 6887 | ||||||||
| 44446-44543 | Unassigned | Known UNAUTHORIZED USE: Ports 44515 & 44516 | |||||||||
| 44600 | tcp | Reserved | |||||||||
| asihpi | 44600 | udp | AudioScience HPI | Eliot Blennerhassett | Eliot Blennerhassett | 2011-07-07 | |||||
| 44601-44817 | Unassigned | ||||||||||
| 45046-45053 | Unassigned | ||||||||||
| 45186-45513 | Unassigned | ||||||||||
| 45515-45677 | Unassigned | ||||||||||
| eba | 45678 | tcp | EBA PRISE | Patrick Kara | Patrick Kara | ||||||
| eba | 45678 | udp | EBA PRISE | Patrick Kara | Patrick Kara | ||||||
| 45679-45823 | Unassigned | ||||||||||
| 45826-45965 | Unassigned | ||||||||||
| ssr-servermgr | 45966 | tcp | SSRServerMgr | Jeremy Gilliat | Jeremy Gilliat | ||||||
| ssr-servermgr | 45966 | udp | SSRServerMgr | Jeremy Gilliat | Jeremy Gilliat | ||||||
| 45967-46335 | Unassigned | ||||||||||
| inedo | 46336 | tcp | Listen port used for Inedo agent communication | Inedo | Steve Dennis | 2016-01-12 | |||||
| 46336 | udp | Reserved | |||||||||
| 46337-46997 | Unassigned | ||||||||||
| spremotetablet | 46998 | tcp | Connection between a desktop computer or server and a signature tablet to capture handwritten signatures | SOFTPRO GmbH | Christoph Hipp | 2012-07-19 | 2013-08-02 | ||||
| 46998 | udp | Reserved | |||||||||
| mediabox | 46999 | tcp | MediaBox Server | Alexander Graef | Alexander Graef | 2004-11 | |||||
| mediabox | 46999 | udp | MediaBox Server | Alexander Graef | Alexander Graef | 2004-11 | |||||
| 47101-47556 | Unassigned | ||||||||||
| 47558-47623 | Unassigned | ||||||||||
| directplaysrvr | 47624 | tcp | Direct Play Server | Ajay Jindal | Ajay Jindal | ||||||
| directplaysrvr | 47624 | udp | Direct Play Server | Ajay Jindal | Ajay Jindal | ||||||
| 47625-47805 | Unassigned | ||||||||||
| ap | 47806 | tcp | ALC Protocol | Dave Robin | Dave Robin | ||||||
| ap | 47806 | udp | ALC Protocol | Dave Robin | Dave Robin | ||||||
| 48006-48047 | Unassigned | ||||||||||
| com-bardac-dw | 48556 | tcp | com-bardac-dw | Nicholas J Howes | Nicholas J Howes | ||||||
| com-bardac-dw | 48556 | udp | com-bardac-dw | Nicholas J Howes | Nicholas J Howes | ||||||
| 48557-48618 | Unassigned | ||||||||||
| iqobject | 48619 | tcp | iqobject | Bjorn de Bonnenfant | Bjorn de Bonnenfant | 2003-11 | |||||
| iqobject | 48619 | udp | iqobject | Bjorn de Bonnenfant | Bjorn de Bonnenfant | 2003-11 | |||||
| 48620-48652 | Unassigned | ||||||||||
| robotraconteur | 48653 | tcp | Robot Raconteur transport | Wason Technology, LLC | John Wason | 2014-01-27 | |||||
| robotraconteur | 48653 | udp | Robot Raconteur transport | Wason Technology, LLC | John Wason | 2014-01-27 | |||||
| 48654-48999 | Unassigned | ||||||||||
| 49151 | Reserved | 2024-12-20 | RFC 6335 | ||||||||
| mihcs | MIH Command Services | RFC 5679 | |||||||||
| mihes | MIH Event Services | RFC 5679 | |||||||||
| mihis | MIH Information Services | RFC 5679 | |||||||||
| autotunnel | udp | IPSEC VPN tunnel over UDP | Stuart Cheshire | Stuart Cheshire | 2019-05-04 | RFC 6281 | Defined TXT Keys: None | ||||
| caldav | tcp | Calendaring Extensions to WebDAV (CalDAV) - non-TLS | IESG | IETF Chair | 2012-02-17 | RFC 6764 | This is an extension of the http service. Defined TXT keys: path=<context path> | ||||
| caldavs | tcp | Calendaring Extensions to WebDAV (CalDAV) - over TLS | IESG | IETF Chair | 2012-02-17 | RFC 6764 | This is an extension of the https service. Defined TXT keys: path=<context path> | ||||
| carddav | tcp | vCard Extensions to WebDAV (CardDAV) - non-TLS | IESG | IETF Chair | 2012-02-17 | RFC 6352 | This is an extension of the http service. Defined TXT keys: path=<context path> | ||||
| carddavs | tcp | vCard Extensions to WebDAV (CardDAV) - over TLS | IESG | IETF Chair | 2012-02-17 | RFC 6352 | This is an extension of the https service. Defined TXT keys: path=<context path> | ||||
| core-rd | tcp | Resource Directory accessed using CoAP over TCP | IESG | IETF Chair | 2021-03-16 | RFC 9176 | Defined TXT keys: None | ||||
| core-rd | udp | Resource Directory accessed using CoAP | IESG | IETF Chair | 2021-03-16 | RFC 9176 | Defined TXT keys: None | ||||
| core-rd-tls | tcp | Resource Directory accessed using CoAP over TLS | IESG | IETF Chair | 2021-03-16 | 2022-04-14 | RFC 9176 | Defined TXT keys: None | |||
| core-rd-dtls | udp | Resource Directory accessed using CoAP over DTLS | IESG | IETF Chair | 2021-03-16 | RFC 9176 | Defined TXT keys: None | ||||
| dns-llq-tls | tcp | DNS Long-Lived Queries over TLS | Stuart Cheshire | Stuart Cheshire | 2019-05-04 | RFC 6281 | Defined TXT Keys: None | ||||
| dns-push-tls | tcp | DNS Push Notification Service Type | IESG | IETF Chair | 2019-11-25 | RFC 8765, Section 6.1 | Defined TXT Keys: None | ||||
| dns-update-tls | tcp | DNS Dynamic Update Service over TLS | Stuart Cheshire | Stuart Cheshire | 2019-05-04 | RFC 6281 | DNS Dynamic Update Service for a given domain may not necessarily be provided by the principal name servers as advertised by the domain's "NS" records, and may not necessarily always be provided on port 53. The "_dns-update._udp.<domain>." SRV record gives the target host and port where DNS Dynamic Update Service is provided for the named domain. | ||||
| dnssd-srp | tcp | DNS-Based Service Discovery | IESG | IETF Chair | 2024-04-12 | 2024-09-05 | RFC 9665 | Defined TXT keys: None |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Adam Armstrong | Observium | adama&observium.org | 2013-05-10 |
| Ajay Jindal | ajayjµsoft.com | ||
| Alexander Graef | alex&graef.cc | 2004-11 | |
| Anthony LaMark | Squadra Technologies | anthony&squadratechnologies.com | 2012-03-14 |
| Bjorn de Bonnenfant | bdeb&iqobject.com | 2003-11 | |
| Boubacar KIMNBA DIT ADAMOU | jinba&chinamobile.com | 2015-11-13 | |
| Brain Patchwork DX, LLC. | specifications&brainpatchworkdx.com | 2022-02-15 | |
| Christoph Hipp | SOFTPRO GmbH | christoph.hipp&softpro.de | 2013-08-02 |
| Colin Buchanan | Epipole Limited | colin&epipole.com | 2014-11-13 |
| Crestron Electronics, Inc. | jpavlik&crestron.com | 2019-10-17 | |
| Dan Zhou | Hearing Australia | dan.zhou&hearing.com.au | 2021-12-23 |
| Dave Robin | iana_ports&daverobin.com | ||
| Eliot Blennerhassett | eblennerhassett&audioscience.com | 2011-07-07 | |
| Epipole Limited | info&epipole.com | 2014-11-13 | |
| Guy Cheng | GCHE&kastenchase.com | ||
| Hearing Australia | dan.zhou&hearing.com.au | 2021-12-23 | |
| Huawei Technologies France | yangxudong&huawei.com | 2018-11-06 | |
| IESG | iesg&ietf.org | ||
| IETF Chair | IETF | chair&ietf.org | |
| Inedo | support&inedo.com | 2016-01-12 | |
| Issam Toufik | Huawei Technologies France | yangxudong&huawei.com | 2018-11-06 |
| Jeremy Gilliat | jeremy.gilliat&geac.com | ||
| John Pavlik | jpavlik&crestron.com | 2019-10-17 | |
| John Wason | Wason Technology, LLC | wason&wasontech.com | 2014-01-27 |
| Maris Bormanis | info&febooti.com | 2011-06-10 | |
| MicroTechniX | Infoµtechnix.com | 2014-10-13 | |
| Nicholas J Howes | nick&ghostwood.org | ||
| Observium | adama&observium.org | 2013-05-10 | |
| Ozz Nixon | Brain Patchwork DX, LLC. | specifications&bpdx.com | 2022-02-15 |
| Patrick Kara | Patrick&eba.net | ||
| Peter Hyde | peter&spis.co.nz | ||
| SOFTPRO GmbH | christoph.hipp&softpro.de | 2013-08-02 | |
| Squadra Technologies | anthony&squadratechnologies.com | 2012-03-14 | |
| Steve Dennis | sdennis&inedo.com | 2016-01-12 | |
| Stuart Cheshire | cheshire&apple.com | 2022-07-11 | |
| Sung U. Ro | ePortalSupport&unisys.com | 2006-01 | |
| Wason Technology, LLC | wason&wasontech.com | 2014-01-27 | |
| Yang Xudong | Huawei Technologies France | yangxudong&huawei.com | 2018-11-06 |
| Yarochkin Michail | MicroTechniX | Michail.Yarochkinµtechnix.com | 2014-10-13 |