Service Name and Transport Protocol Port Number Registry
Last Updated
- 2026-10-15
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| stresstester | 5397 | udp | StressTester(tm) Injector | Graham Parsons | Graham Parsons | 2005-08 | |||||
| elektron-admin | 5398 | tcp | Elektron Administration | Chris Hawk | Chris Hawk | 2005-08 | |||||
| elektron-admin | 5398 | udp | Elektron Administration | Chris Hawk | Chris Hawk | 2005-08 | |||||
| securitychase | 5399 | tcp | SecurityChase | Daisuke Shinomiya | Daisuke Shinomiya | 2005-08 | |||||
| securitychase | 5399 | udp | SecurityChase | Daisuke Shinomiya | Daisuke Shinomiya | 2005-08 | |||||
| 5508-5539 | Unassigned | ||||||||||
| ics | 5639 | tcp | Symantec Integrity Checking Service | Symantec | Danzhou Liu | 2012-05-07 | |||||
| 5639 | udp | Reserved | |||||||||
| 6134-6139 | Unassigned | ||||||||||
| metaedit-ws | 6390 | tcp | MetaEdit+ WebService API | Steven Kelly | Steven Kelly | 2007-11-12 | |||||
| metaedit-ws | 6390 | udp | MetaEdit+ WebService API | Steven Kelly | Steven Kelly | 2007-11-12 | |||||
| 6391-6399 | Unassigned | ||||||||||
| 6433-6439 | Unassigned | ||||||||||
| 6637-6639 | Unassigned | ||||||||||
| 7032-7039 | Unassigned | ||||||||||
| 7366-7390 | Unassigned | 2006-02-06 | |||||||||
| mindfilesys | 7391 | tcp | mind-file system server | Dave Porter | Dave Porter | ||||||
| mindfilesys | 7391 | udp | mind-file system server | Dave Porter | Dave Porter | ||||||
| mrssrendezvous | 7392 | tcp | mrss-rendezvous server | Dave Porter | Dave Porter | ||||||
| mrssrendezvous | 7392 | udp | mrss-rendezvous server | Dave Porter | Dave Porter | ||||||
| nfoldman | 7393 | tcp | nFoldMan Remote Publish | Richard McDonald | Richard McDonald | 2006-01 | |||||
| nfoldman | 7393 | udp | nFoldMan Remote Publish | Richard McDonald | Richard McDonald | 2006-01 | |||||
| fse | 7394 | tcp | File system export of backup images | Weibao Wu | Weibao Wu | 2006-04 | |||||
| fse | 7394 | udp | File system export of backup images | Weibao Wu | Weibao Wu | 2006-04 | |||||
| winqedit | 7395 | tcp | winqedit | David Greer | David Greer | ||||||
| winqedit | 7395 | udp | winqedit | David Greer | David Greer | ||||||
| 7396 | Unassigned | ||||||||||
| hexarc | 7397 | tcp | Hexarc Command Language | George Moromisato | George Moromisato | 2004-11 | |||||
| hexarc | 7397 | udp | Hexarc Command Language | George Moromisato | George Moromisato | 2004-11 | |||||
| 7398-7399 | Unassigned | ||||||||||
| 7739-7740 | Unassigned | ||||||||||
| 8035-8039 | Unassigned | ||||||||||
| 8133-8139 | Unassigned | ||||||||||
| 8385-8399 | Unassigned | ||||||||||
| gnmi-gnoi | 9339 | tcp | gRPC Network Mgmt/Operations Interface | Google Netops | gNxi Maintainers | 2019-05-09 | |||||
| 9339 | udp | Reserved | |||||||||
| otp | 9390 | tcp | OpenVAS Transfer Protocol | Tim Brown | Tim Brown | 2008-12-24 | |||||
| 9390 | udp | Reserved | |||||||||
| 9391-9395 | Unassigned | ||||||||||
| fjinvmgr | 9396 | tcp | fjinvmgr | Yutaka Ono | Yutaka Ono | ||||||
| fjinvmgr | 9396 | udp | fjinvmgr | Yutaka Ono | Yutaka Ono | ||||||
| mpidcagt | 9397 | tcp | MpIdcAgt | Yutaka Ono | Yutaka Ono | ||||||
| mpidcagt | 9397 | udp | MpIdcAgt | Yutaka Ono | Yutaka Ono | ||||||
| 9398-9399 | Unassigned | ||||||||||
| 9633-9639 | Unassigned | ||||||||||
| bngsync | 10439 | udp | BalanceNG session table synchronization protocol | Inlab Software GmbH | Thomas G. Obermair | 2014-05-02 | |||||
| 10439 | tcp | Reserved | |||||||||
| 10501-10539 | Unassigned | ||||||||||
| 13225-13399 | Unassigned | ||||||||||
| 13895-13928 | Unassigned | ||||||||||
| dta-systems | 13929 | tcp | D-TA SYSTEMS | Alexis Bose | Alexis Bose | 2008-12-08 | |||||
| dta-systems | 13929 | udp | D-TA SYSTEMS | Alexis Bose | Alexis Bose | 2008-12-08 | |||||
| medevolve | 13930 | tcp | MedEvolve Port Requester | Jon Robertson | Jon Robertson | 2008-10-24 | |||||
| 13930 | udp | Reserved | |||||||||
| 13931-13999 | Unassigned | ||||||||||
| 15661-15739 | Unassigned | ||||||||||
| 19316-19397 | Unassigned | ||||||||||
| mtrgtrans | 19398 | tcp | mtrgtrans | Katsuhito Muroi | Katsuhito Muroi | ||||||
| mtrgtrans | 19398 | udp | mtrgtrans | Katsuhito Muroi | Katsuhito Muroi | ||||||
| 19399-19409 | Unassigned | ||||||||||
| fxuptp | 19539 | tcp | FXUPTP | Keiji Okuma | Keiji Okuma | 2005-08 | |||||
| fxuptp | 19539 | udp | FXUPTP | Keiji Okuma | Keiji Okuma | 2005-08 | |||||
| 23334-23399 | Unassigned | ||||||||||
| 23547-23999 | Unassigned | ||||||||||
| 28201-28239 | Unassigned | ||||||||||
| 30261-30399 | Unassigned | ||||||||||
| dilithium3 | 30939 | tcp | Persistent peer-to-peer connections for block propagation, transaction relay, and BFT consensus message exchange. | Juan Jose Todoli de Torres | Juan Jose Todoli de Torres | 2026-05-28 | |||||
| dilithium3 | 30939 | udp | Kademlia DHT peer discovery and routing table maintenance. | Juan Jose Todoli de Torres | Juan Jose Todoli de Torres | 2026-05-28 | |||||
| 31338-31399 | Unassigned | ||||||||||
| 32250-32399 | Unassigned | ||||||||||
| 38639-38799 | Unassigned | ||||||||||
| 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 | ||||||||||
| eq3-update | 43439 | tcp | EQ3 firmware update | eQ-3 Entwicklung GmbH | Tido de Vries | 2012-02-10 | 2014-05-09 | ||||
| eq3-config | 43439 | udp | EQ3 discovery and configuration | eQ-3 Entwicklung GmbH | Tido de Vries | 2012-02-10 | 2014-05-09 | ||||
| lobby | Gobby | 0x539 dev group | 0x539 dev group | Defined TXT keys: None |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Alexis Bose | abose&d-ta.com | 2008-12-08 | |
| Chris Hawk | chris&corriente.net | 2005-08 | |
| Daisuke Shinomiya | shinomiya.daisu&jp.fujitsu.com | 2005-08 | |
| Dan Zhou | Hearing Australia | dan.zhou&hearing.com.au | 2021-12-23 |
| Danzhou Liu | Symantec | Danzhou_Liu&symantec.com | 2012-05-07 |
| Dave Porter | porter&mango.com | ||
| David Greer | david_greer&robelle.com | ||
| eQ-3 Entwicklung GmbH | ports&entwicklung.eq-3.de | 2018-02-28 | |
| George Moromisato | gpm&neurohack.com | 2004-11 | |
| gNxi Maintainers | gnxi-maintainers&google.com | 2019-05-09 | |
| 0x539 dev group | http://darcs.0x539.de/trac/obby/cgi-bin/trac.cgi | ||
| Google Netops | gnxi-maintainers&google.com | 2019-05-09 | |
| Graham Parsons | graham.parsons&reflective.com | 2005-08 | |
| Hearing Australia | dan.zhou&hearing.com.au | 2021-12-23 | |
| Inlab Software GmbH | info&inlab.de | 2014-05-02 | |
| Jon Robertson | jmrobertson&medevolve.com | 2008-10-24 | |
| Juan Jose Todoli de Torres | admin&dilithium3.com | 2026-05-28 | |
| Katsuhito Muroi | muroi&pfu.co.jp | ||
| Keiji Okuma | okuma&silex.jp | 2005-08 | |
| Peter Hyde | peter&spis.co.nz | ||
| Richard McDonald | ve3nvm&spamcop.net | 2006-01 | |
| Steven Kelly | stevek&metacase.com | 2007-11-12 | |
| Symantec | info&symantec.com | 2012-05-07 | |
| Thomas G. Obermair | Inlab Software GmbH | thomas.obermair&inlab.de | 2014-05-02 |
| Tido de Vries | eQ-3 Entwicklung GmbH | tido.devries&entwicklung.eq-3.de | 2018-02-28 |
| Tim Brown | timb&openvas.org | 2008-12-24 | |
| Weibao Wu | weibao_wu&symantec.com | 2006-04 | |
| Yutaka Ono | ono&saint.nm.fujitsu.co.jp |