Service Name and Transport Protocol Port Number Registry
Last Updated
- 2026-10-13
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| rwp | 30100 | sctp | Remote Window Protocol | Maxim Baklanovsky | Maxim Baklanovsky | 2015-05-20 | |||||
| 30101-30259 | Unassigned | ||||||||||
| 30261-30399 | Unassigned | ||||||||||
| 30401-30831 | Unassigned | ||||||||||
| 31000-31015 | Unassigned | ||||||||||
| ka-sddp | 31016 | tcp | Kollective Agent Secure Distributed Delivery Protocol | Kollective Technology Inc. | John Wainwright | 2016-12-11 | |||||
| ka-kdp | 31016 | udp | Kollective Agent Kollective Delivery Protocol | Kollective Technology Inc. | John Wainwright | 2016-12-11 | |||||
| 31017-31019 | Unassigned | ||||||||||
| autotrac-acp | 31020 | tcp | Autotrac ACP 245 | Roberto Jorge Dino | Roberto Jorge Dino | ||||||
| 31020 | udp | Reserved | |||||||||
| 31021-31028 | Unassigned | ||||||||||
| 31029 | tcp | Reserved | |||||||||
| yawn | 31029 | udp | YaWN - Yet Another Windows Notifier | David Spivey | David Spivey | 2010-08-30 | |||||
| 31030-31336 | Unassigned | ||||||||||
| eldim | 31337 | tcp | eldim is a secure file upload proxy | Antonios A. Chariton | Antonios A. Chariton | 2021-05-14 | |||||
| eldim | 31337 | udp | eldim is a secure file upload proxy | Antonios A. Chariton | Antonios A. Chariton | 2021-05-14 | |||||
| 31338-31399 | Unassigned | ||||||||||
| pace-licensed | 31400 | tcp | PACE license server | PACE Anti-Piracy | Allen Cronce | 2014-04-28 | |||||
| 31400 | udp | Reserved | |||||||||
| 31401-31415 | Unassigned | ||||||||||
| xqosd | 31416 | tcp | XQoS network monitor | Joe Elliott | Joe Elliott | 2002-06 | |||||
| xqosd | 31416 | udp | XQoS network monitor | Joe Elliott | Joe Elliott | 2002-06 | |||||
| 31417-31456 | Unassigned | ||||||||||
| tetrinet | 31457 | tcp | TetriNET Protocol | Emmanuel Bourg | Emmanuel Bourg | 2004-11 | |||||
| tetrinet | 31457 | udp | TetriNET Protocol | Emmanuel Bourg | Emmanuel Bourg | 2004-11 | |||||
| 31458-31619 | Unassigned | ||||||||||
| lm-mon | 31620 | tcp | lm mon | System Administrator | System Administrator | 2003-06 | |||||
| lm-mon | 31620 | udp | lm mon | System Administrator | System Administrator | 2003-06 | |||||
| 31621-31684 | Unassigned | ||||||||||
| dsx-monitor | 31685 | tcp | DS Expert Monitor IANA assigned this well-formed service name as a replacement for "dsx_monitor". |
John Lowery | John Lowery | 2008-08-21 | |||||
| dsx_monitor | 31685 | tcp | DS Expert Monitor | John Lowery | John Lowery | 2008-08-21 | This entry is an alias to "dsx-monitor". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| 31685 | udp | Reserved | |||||||||
| 31686-31764 | Unassigned | ||||||||||
| gamesmith-port | 31765 | tcp | GameSmith Port | Randy Thompson | Randy Thompson | 2002-08 | |||||
| gamesmith-port | 31765 | udp | GameSmith Port | Randy Thompson | Randy Thompson | 2002-08 | |||||
| 31766-31947 | Unassigned | ||||||||||
| iceedcp-tx | 31948 | tcp | Embedded Device Configuration Protocol TX IANA assigned this well-formed service name as a replacement for "iceedcp_tx". |
Oliver Lewis | Oliver Lewis | 2006-08 | |||||
| iceedcp_tx | 31948 | tcp | Embedded Device Configuration Protocol TX | Oliver Lewis | Oliver Lewis | 2006-08 | This entry is an alias to "iceedcp-tx". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| iceedcp-tx | 31948 | udp | Embedded Device Configuration Protocol TX IANA assigned this well-formed service name as a replacement for "iceedcp_tx". |
Oliver Lewis | Oliver Lewis | 2006-08 | |||||
| iceedcp_tx | 31948 | udp | Embedded Device Configuration Protocol TX | Oliver Lewis | Oliver Lewis | 2006-08 | This entry is an alias to "iceedcp-tx". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| iceedcp-rx | 31949 | tcp | Embedded Device Configuration Protocol RX IANA assigned this well-formed service name as a replacement for "iceedcp_rx". |
Oliver Lewis | Oliver Lewis | 2006-08 | |||||
| iceedcp_rx | 31949 | tcp | Embedded Device Configuration Protocol RX | Oliver Lewis | Oliver Lewis | 2006-08 | This entry is an alias to "iceedcp-rx". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| iceedcp-rx | 31949 | udp | Embedded Device Configuration Protocol RX IANA assigned this well-formed service name as a replacement for "iceedcp_rx". |
Oliver Lewis | Oliver Lewis | 2006-08 | |||||
| iceedcp_rx | 31949 | udp | Embedded Device Configuration Protocol RX | Oliver Lewis | Oliver Lewis | 2006-08 | This entry is an alias to "iceedcp-rx". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| 31950-32033 | Unassigned | ||||||||||
| t1distproc60 | 32249 | tcp | T1 Distributed Processor | Peter Beahan | Peter Beahan | 2004-11 | |||||
| t1distproc60 | 32249 | udp | T1 Distributed Processor | Peter Beahan | Peter Beahan | 2004-11 | |||||
| 32401-32482 | Unassigned | ||||||||||
| filenet-rmi | 32771 | tcp | FileNET RMI | Chris Adkins | Chris Adkins | ||||||
| filenet-rmi | 32771 | udp | FileNet RMI | Chris Adkins | Chris Adkins | ||||||
| mlsn | 32801 | tcp | Multiple Listing Service Network | Corey Leong | Corey Leong | 2010-10-11 | |||||
| mlsn | 32801 | udp | Multiple Listing Service Network | Corey Leong | Corey Leong | 2010-10-11 | |||||
| 32802-32810 | Unassigned | ||||||||||
| retp | 32811 | tcp | Real Estate Transport Protocol | Corey Leong | Corey Leong | 2010-10-11 | |||||
| 32811 | udp | Reserved | |||||||||
| 32812-32895 | Unassigned | ||||||||||
| 33001-33059 | Unassigned | ||||||||||
| 33061-33122 | Unassigned | ||||||||||
| aurora-balaena | 33123 | tcp | Aurora (Balaena Ltd) | Andrew Mather | Andrew Mather | 2008-02-14 | |||||
| aurora-balaena | 33123 | udp | Aurora (Balaena Ltd) | Andrew Mather | Andrew Mather | 2008-02-14 | |||||
| 33124-33330 | Unassigned | ||||||||||
| diamondport | 33331 | tcp | DiamondCentral Interface | Edward Browdy | Edward Browdy | 2002-07 | |||||
| diamondport | 33331 | udp | DiamondCentral Interface | Edward Browdy | Edward Browdy | 2002-07 | |||||
| 33891-34248 | Unassigned | ||||||||||
| 34568-34961 | Unassigned | ||||||||||
| 34981-34999 | Unassigned | ||||||||||
| rt-viewer | 35001 | tcp | ReadyTech Viewer | ReadyTech Corporation | Kevin Woodward | 2013-09-13 | |||||
| rt-viewer | 35001 | udp | ReadyTech Viewer | ReadyTech Corporation | Kevin Woodward | 2013-09-13 | |||||
| axio-disc | 35100 | tcp | Axiomatic discovery protocol | Axiomatic Technologies Corporation | Oleksandr_Bogush | 2016-12-09 | |||||
| axio-disc | 35100 | udp | Axiomatic discovery protocol | Axiomatic Technologies Corporation | Oleksandr_Bogush | 2016-12-09 | |||||
| 35101-35353 | Unassigned | ||||||||||
| allpeers | 36001 | tcp | AllPeers Network | Cedric Maloux | Cedric Maloux | 2007-04 | |||||
| allpeers | 36001 | udp | AllPeers Network | Cedric Maloux | Cedric Maloux | 2007-04 | |||||
| 36002-36410 | Unassigned | ||||||||||
| wlcp | 36411 | udp | Wireless LAN Control plane Protocol (WLCP) | 3GPP | Dongwook Kim | 2014-11-14 | 2026-01-23 | ||||
| 36411 | tcp | Reserved | |||||||||
| 36412 | tcp | Reserved | |||||||||
| 36412 | udp | Reserved | |||||||||
| s1-control | 36412 | sctp | S1-Control Plane (3GPP) | Kimmo Kymalainen | Kimmo Kymalainen | 2009-09-01 | |||||
| 36413-36421 | Unassigned | ||||||||||
| 36445-36461 | Unassigned | ||||||||||
| 36525-36601 | Unassigned | ||||||||||
| 36701-36864 | Unassigned | ||||||||||
| 36866-37471 | Unassigned | ||||||||||
| 3gpp-w1ap | 37472 | sctp | W1 signalling transport | 3GPP | Lionel Morand | 2020-07-16 | |||||
| eftp | 37601 | tcp | Epipole File Transfer Protocol | Epipole Limited | Colin Buchanan | 2014-11-13 | |||||
| 37601 | udp | Reserved | |||||||||
| ivs-insertion | 38001 | tcp | InfoVista Server Insertion | InfoVista | Sébastien Bouchex Bellomié | 2014-05-23 | |||||
| 38001 | udp | Reserved | |||||||||
| galaxy7-data | 38201 | tcp | Galaxy7 Data Tunnel | Tatham Oddie | Tatham Oddie | 2002-09 | |||||
| galaxy7-data | 38201 | udp | Galaxy7 Data Tunnel | Tatham Oddie | Tatham Oddie | 2002-09 | |||||
| 38204-38411 | Unassigned | ||||||||||
| 38412 | tcp | Reserved | |||||||||
| 38412 | udp | Reserved | |||||||||
| ng-control | 38412 | sctp | NG Control Plane (3GPP) | Luis Lopes | Luis Lopes | 2017-05-18 | 2017-05-19 | ||||
| 38413-38421 | Unassigned | ||||||||||
| 38423-38461 | Unassigned | ||||||||||
| e1-interface | 38462 | sctp | E1 signalling transport (3GPP) | Huawei Technologies France | Yang Xudong; Issam Toufik | 2018-11-06 | 2018-11-15 | ||||
| 38463-38471 | Unassigned | ||||||||||
| f1-control | 38472 | sctp | F1 Control Plane (3GPP) | Luis Lopes | Luis Lopes | 2017-06-23 | |||||
| 38801-38864 | Unassigned |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| 3GPP | dongwook.kim&etsi.org | 2026-01-23 | |
| 3GPP | lionel.morand&orange.com | 2020-07-16 | |
| Allen Cronce | PACE Anti-Piracy | allen&paceap.com | 2014-04-28 |
| Andrew Mather | info&balaena.com | 2008-02-14 | |
| Antonios A. Chariton | iana&daknob.net | 2021-05-14 | |
| Axiomatic Technologies Corporation | obogush&axiomatic.com | 2016-12-09 | |
| Cedric Maloux | cedric&allpeers.com | 2007-04 | |
| Chris Adkins | cadkins&filenet.com | 2006-10 | |
| Colin Buchanan | Epipole Limited | colin&epipole.com | 2014-11-13 |
| Corey Leong | cleong&gr8c.org | 2010-10-11 | |
| David Spivey | DavidTSpivey&gmail.com | 2010-08-30 | |
| Dongwook Kim | 3GPP | dongwook.kim&etsi.org | 2026-01-23 |
| Edward Browdy | ebrowdy&cryptek.com | 2002-07 | |
| Emmanuel Bourg | smanux&lfjr.net | 2004-11 | |
| Epipole Limited | info&epipole.com | 2014-11-13 | |
| Huawei Technologies France | yangxudong&huawei.com | 2018-11-06 | |
| InfoVista | sbouchex&infovista.com | 2014-05-23 | |
| Issam Toufik | Huawei Technologies France | yangxudong&huawei.com | 2018-11-06 |
| Joe Elliott | joe&inetd.com | 2002-06 | |
| John Lowery | NetPro Computing | jlowery&netpro.com | 2008-08-21 |
| John Wainwright | jwainwright&kollective.com | 2016-12-11 | |
| Kevin Woodward | ReadyTech Corporation | kwoodward&readytech.com | 2013-09-13 |
| Kimmo Kymalainen | kimmo.kymalainen&etsi.org | 2017-05-08 | |
| Kollective Technology Inc. | info&kollective.com | 2016-12-11 | |
| Lionel Morand | lionel.morand&orange.com | 2020-07-16 | |
| Luis Lopes | llopes&qti.qualcomm.com | 2017-06-23 | |
| Maxim Baklanovsky | m.baklanovsky&spbu.ru | 2015-05-20 | |
| Oleksandr_Bogush | obogush&axiomatic.com | 2016-12-09 | |
| Oliver Lewis | o.lewis&icerobotics.co.uk | 2006-08 | |
| PACE Anti-Piracy | allen&paceap.com | 2014-04-28 | |
| Peter Beahan | peter_beahan&technologyonecorp.com | 2004-11 | |
| Randy Thompson | thompr&earthlink.net | 2002-08 | |
| ReadyTech Corporation | kwoodward&readytech.com | 2013-09-13 | |
| Roberto Jorge Dino | roberto.dino&autotrac.com.br | ||
| Sébastien Bouchex Bellomié | InfoVista | sbouchex&infovista.com | 2014-05-23 |
| System Administrator | sysadmin&silvaco.com | 2003-06 | |
| Tatham Oddie | tatham&e-oddie.com | 2002-09 | |
| Yang Xudong | Huawei Technologies France | yangxudong&huawei.com | 2018-11-06 |