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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| worldscores | 4545 | tcp | WorldScores | Steve Davis | Steve Davis | ||||||
| worldscores | 4545 | udp | WorldScores | Steve Davis | Steve Davis | ||||||
| sf-lm | 4546 | tcp | SF License Manager (Sentinel) | Thomas Koell | Thomas Koell | ||||||
| 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 | Tom Hawkins | 2006-02 | |||||
| synchromesh | 4548 | udp | Synchromesh | Tom Hawkins | Tom Hawkins | 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 | RFC 5677 | |||||||
| ieee-mih | 4551 | udp | MIH Services | RFC 5677 | |||||||
| 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 | RFC 3103 | |||||||
| rsip | 4555 | udp | RSIP Port | RFC 3103 | |||||||
| dtn-bundle | 4556 | tcp | DTN Bundle TCP CL Protocol | IESG | IETF Chair | 2021-02-22 | RFC 9174 | ||||
| dtn-bundle | 4556 | udp | DTN Bundle UDP CL Protocol | 2006-11 | 2014-02-21 | RFC 7122 | |||||
| dtn-bundle | 4556 | dccp | DTN Bundle DCCP CL Protocol | 2013-11-12 | 2014-02-21 | RFC 7122 | 1685351985 | ||||
| 4557 | tcp | Reserved | |||||||||
| mtcevrunqss | 4557 | udp | Marathon everRun Quorum Service Server | David Schwartz | David Schwartz | 2009-06-18 | |||||
| 4558 | tcp | Reserved | |||||||||
| mtcevrunqman | 4558 | udp | Marathon everRun Quorum Service Manager | David Schwartz | David Schwartz | 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 | RFC 5456 | 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 | RFC 5456 | 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 Corp. | 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 | RFC 6546 | |||||
| 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 | |||||
| sixchat | 4605 | tcp | Direct End to End Secure Chat Protocol | Sixscape Communications, Pte. Ltd. | Lawrence E. Hughes | 2014-09-11 | |||||
| 4605 | udp | Reserved | |||||||||
| 4622-4645 | Unassigned | ||||||||||
| 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 | |||||
| contclientms | 4665 | tcp | Container Client Message Service | Bruce Thompson | Bruce Thompson | 2006-02 | |||||
| contclientms | 4665 | udp | Container Client Message Service | Bruce Thompson | Bruce Thompson | 2006-02 | |||||
| dhct-status | 4675 | tcp | BIAP Device Status | ||||||||
| dhct-status | 4675 | udp | BIAP Device Status | ||||||||
| autopac | 4685 | tcp | Autopac Protocol | Peter Hallenbeck | Peter Hallenbeck | 2005-08 | |||||
| autopac | 4685 | udp | Autopac Protocol | Peter Hallenbeck | Peter Hallenbeck | 2005-08 | |||||
| 4705-4710 | Unassigned | ||||||||||
| truckstar | 4725 | tcp | TruckStar Service | Brian Toothill | Brian Toothill | 2010-10-15 | |||||
| truckstar | 4725 | udp | TruckStar Service | Brian Toothill | Brian Toothill | 2010-10-15 | |||||
| fmp | 4745 | tcp | Funambol Mobile Push | Andrea Gazzaniga | Andrea Gazzaniga | 2007-01 | |||||
| fmp | 4745 | udp | Funambol Mobile Push | Andrea Gazzaniga | Andrea Gazzaniga | 2007-01 | |||||
| ssad | 4750 | tcp | Simple Service Auto Discovery | Dr Horst Herb | Dr Horst Herb | 2005-12 | |||||
| ssad | 4750 | udp | Simple Service Auto Discovery | Dr Horst Herb | Dr Horst Herb | 2005-12 | |||||
| spocp | 4751 | tcp | Simple Policy Control Protocol | Roland Hedberg | Roland Hedberg | 2005-08 | |||||
| spocp | 4751 | udp | Simple Policy Control Protocol | Roland Hedberg | Roland Hedberg | 2005-08 | |||||
| snap | 4752 | tcp | Simple Network Audio Protocol | Dameon Wagner | Dameon Wagner | 2002-02 | |||||
| snap | 4752 | udp | Simple Network Audio Protocol | Dameon Wagner | Dameon Wagner | 2002-02 | |||||
| simon | 4753 | tcp | Simple Invocation of Methods Over Network (SIMON) | Alexander Christian | Alexander Christian | 2012-04-19 | |||||
| simon-disc | 4753 | udp | Simple Invocation of Methods Over Network (SIMON) Discovery | Alexander Christian | Alexander Christian | 2012-04-19 | |||||
| 4754 | tcp | Reserved | |||||||||
| gre-in-udp | 4754 | udp | GRE-in-UDP Encapsulation | IESG | IETF Chair | 2016-10-05 | RFC 8086 | ||||
| 4755 | tcp | Reserved | |||||||||
| gre-udp-dtls | 4755 | udp | GRE-in-UDP Encapsulation with DTLS | IESG | IETF Chair | 2016-10-05 | RFC 8086 | ||||
| RDCenter | 4756 | tcp | Reticle Decision Center | KLA Tencor/RAPID | George Hwa | 2016-10-17 |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Alexander Christian | alexander.christian&root1.de | 2012-04-19 | |
| Amahi | iana&amahi.org | 2014-02-27 | |
| Andrea Gazzaniga | gazzaniga&funambol.com | 2007-01 | |
| Avi Lior | avi&bridgewatersystems.com | 2009-02-27 | |
| Benjamin Kowarsch | benjamin&sunrise-tel.com | 2004-11 | |
| Benjamin Misell | beninjam174&gmail.com | 2016-05-19 | |
| Brian Toothill | brian.toothill&touchstar.co.uk | 2010-10-15 | |
| Bruce Thompson | brucet&actioninformationsystems.com | 2006-02 | |
| CardiffTec | beninjam174&gmail.com | 2016-05-19 | |
| Carlos Puchol | Amahi | iana&amahi.org | 2014-02-27 |
| Carsten Strotmann | carsten.strotmann&menandmice.com | 2009-05-20 | |
| Dameon Wagner | d.wagner&freemail.absa.co.za | 2002-02 | |
| Dan Newman | Oracle Corp. | dan.c.newman&oracle.com | 2013-09-20 |
| David Ott | dott&qualcomm.com | 2010-10-15 | |
| David Schwartz | david.schwartz&marathontechnologies.com | 2009-06-18 | |
| Dr Horst Herb | horst&dorrigomedical.com | 2005-12 | |
| George Hwa | george.hwa&kla-tencor.com | 2016-10-17 | |
| Gordan Vosicki | admin&icsa.ch | 2009-09-23 | |
| IESG | iesg&ietf.org | ||
| IETF Chair | IETF | chair&ietf.org | |
| Joe Wesley | joe.wesley&east.sun.com | ||
| Kev George | Kev.George&smiths-aerospace.com | 2006-09 | |
| KLA Tencor/RAPID | george.hwa&kla-tencor.com | 2016-10-17 | |
| Larry Zarou | zarla01&cbsits.com | 2006-10 | |
| Lawrence E. Hughes | Sixscape Communications, Ltd. | lhughes&sixscape.com | 2014-03-17 |
| Lee Howard | iana&hylafax.org | 2002-03 | |
| Leo Lesage | leo.lesage&adp.nl | 2006-04 | |
| Les Enstone | lenstone&lanner.co.uk | ||
| Nick Warrington | nick.warrington&paconsulting.com | 2006-03 | |
| Noam Rimon | noam.rimon&playstation.sony.com | 2004-12 | |
| Oracle Corp. | dan.c.newman&oracle.com | 2013-09-20 | |
| Peter Hallenbeck | pete&consumertechnologiesgroup.com | 2005-08 | |
| Portnoy Boxman | portnoy_boxman&bmc.com | 2005-01 | |
| Roland Hedberg | roland&catalogix.se | 2005-08 | |
| Sixscape Communications, Pte. Ltd. | lhughes&sixscape.com | 2014-08-26 | |
| Steve Davis | sdavis&optum-inc.com | ||
| Thomas Koell | info&sf.com | ||
| Tom Hawkins | tomahawkins&gmail.com | 2006-02 |