Service Name and Transport Protocol Port Number Registry
Last Updated
- 2026-11-10
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| meta5 | 393 | tcp | Meta5 | Jim Kanzler | Jim Kanzler | ||||||
| meta5 | 393 | udp | Meta5 | Jim Kanzler | Jim Kanzler | ||||||
| iclpv-nls | 1393 | tcp | Network Log Server | ||||||||
| iclpv-nls | 1393 | udp | Network Log Server | ||||||||
| ms-olap1 | 2393 | tcp | MS OLAP 1 | ||||||||
| ms-olap1 | 2393 | udp | MS OLAP 1 | ||||||||
| d2k-tapestry1 | 3393 | tcp | D2K Tapestry Client to Server | ||||||||
| d2k-tapestry1 | 3393 | udp | D2K Tapestry Client to Server | ||||||||
| syam-webserver | 3930 | tcp | Syam Web Server Port | Michael Daniele | Michael Daniele | 2003-11 | |||||
| syam-webserver | 3930 | udp | Syam Web Server Port | Michael Daniele | Michael Daniele | 2003-11 | |||||
| msr-plugin-port | 3931 | tcp | MSR Plugin Port | Ron Steed | Ron Steed | 2003-11 | |||||
| msr-plugin-port | 3931 | udp | MSR Plugin Port | Ron Steed | Ron Steed | 2003-11 | |||||
| dyn-site | 3932 | tcp | Dynamic Site System | Steve Qi | Steve Qi | 2003-11 | |||||
| dyn-site | 3932 | udp | Dynamic Site System | Steve Qi | Steve Qi | 2003-11 | |||||
| plbserve-port | 3933 | tcp | PL/B App Server User Port | Edward R. Boedecker | Edward R. Boedecker | 2003-11 | |||||
| plbserve-port | 3933 | udp | PL/B App Server User Port | Edward R. Boedecker | Edward R. Boedecker | 2003-11 | |||||
| sunfm-port | 3934 | tcp | PL/B File Manager Port | Edward R. Boedecker | Edward R. Boedecker | 2003-11 | |||||
| sunfm-port | 3934 | udp | PL/B File Manager Port | Edward R. Boedecker | Edward R. Boedecker | 2003-11 | |||||
| sdp-portmapper | 3935 | tcp | SDP Port Mapper Protocol | James Pinkerton | James Pinkerton | 2003-11 | |||||
| sdp-portmapper | 3935 | udp | SDP Port Mapper Protocol | James Pinkerton | James Pinkerton | 2003-11 | |||||
| mailprox | 3936 | tcp | Mailprox | Christof Drescher | Christof Drescher | 2003-11 | |||||
| mailprox | 3936 | udp | Mailprox | Christof Drescher | Christof Drescher | 2003-11 | |||||
| dvbservdsc | 3937 | tcp | DVB Service Discovery | Bert van Willigen; Peter MacAvock | Bert van Willigen; Peter MacAvock | 2003-11 | |||||
| dvbservdsc | 3937 | udp | DVB Service Discovery | Bert van Willigen; Peter MacAvock | Bert van Willigen; Peter MacAvock | 2003-11 | |||||
| dbcontrol-agent | 3938 | tcp | Oracle dbControl Agent po IANA assigned this well-formed service name as a replacement for "dbcontrol_agent". |
Todd Guay | Todd Guay | 2003-11 | |||||
| dbcontrol_agent | 3938 | tcp | Oracle dbControl Agent po | Todd Guay | Todd Guay | 2003-11 | This entry is an alias to "dbcontrol-agent". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| dbcontrol-agent | 3938 | udp | Oracle dbControl Agent po IANA assigned this well-formed service name as a replacement for "dbcontrol_agent". |
Todd Guay | Todd Guay | 2003-11 | |||||
| dbcontrol_agent | 3938 | udp | Oracle dbControl Agent po | Todd Guay | Todd Guay | 2003-11 | This entry is an alias to "dbcontrol-agent". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| aamp | 3939 | tcp | Anti-virus Application Management Port | In-sik Choi | In-sik Choi | 2002-02 | |||||
| aamp | 3939 | udp | Anti-virus Application Management Port | In-sik Choi | In-sik Choi | 2002-02 | |||||
| apwi-rxspooler | 4393 | tcp | American Printware RXSpooler Protocol | Lech Lakomy | Lech Lakomy | 2009-02-12 | |||||
| 4393 | udp | Reserved | |||||||||
| nfoldman | 7393 | tcp | nFoldMan Remote Publish | Richard McDonald | Richard McDonald | 2006-01 | |||||
| nfoldman | 7393 | udp | nFoldMan Remote Publish | Richard McDonald | Richard McDonald | 2006-01 | |||||
| medevolve | 13930 | tcp | MedEvolve Port Requester | Jon Robertson | Jon Robertson | 2008-10-24 | |||||
| 13930 | udp | Reserved | |||||||||
| 13931-13999 | Unassigned |
Contact Information
| Name | Contact URI | Last Updated |
|---|---|---|
| Bert van Willigen | bert.vanwilligen&philips.com | 2003-11 |
| Christof Drescher | drescher&mailprox.net | 2003-11 |
| Edward R. Boedecker | boedeck1&flash.net | 2003-11 |
| In-sik Choi | iscard&virusdesk.com | 2002-02 |
| James Pinkerton | jpinkµsoft.com | 2003-11 |
| Jim Kanzler | jim.kanzler&meta5.com | |
| Jon Robertson | jmrobertson&medevolve.com | 2008-10-24 |
| Lech Lakomy | llakomy&apwi.com | 2009-02-12 |
| Michael Daniele | michael.daniele&syamsoftware.com | 2003-11 |
| Peter MacAvock | macavock&dvb.org | |
| Richard McDonald | ve3nvm&spamcop.net | 2006-01 |
| Ron Steed | rsteed&cemaphore.com | 2003-11 |
| Steve Qi | steve.qi&dyn-site.com | 2003-11 |
| Todd Guay | todd.guay&oracle.com | 2005-08 |