Service Name and Transport Protocol Port Number Registry
Last Updated
- 2026-11-06
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| discard | 9 | dccp | Discard | Eddie Kohler | Eddie Kohler | RFC 4340 | 1145656131 | ||||
| apex-edge | 913 | tcp | APEX endpoint-relay service | RFC 3340 | |||||||
| apex-edge | 913 | udp | APEX endpoint-relay service | RFC 3340 | |||||||
| naap | 1340 | tcp | NAAP | Henry Haverinen | Henry Haverinen | ||||||
| naap | 1340 | udp | NAAP | Henry Haverinen | Henry Haverinen | ||||||
| wrs-registry | 2340 | tcp | WRS Registry IANA assigned this well-formed service name as a replacement for "wrs_registry". |
Christophe Cleraux | Christophe Cleraux | ||||||
| wrs_registry | 2340 | tcp | WRS Registry | Christophe Cleraux | Christophe Cleraux | This entry is an alias to "wrs-registry". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| wrs-registry | 2340 | udp | WRS Registry IANA assigned this well-formed service name as a replacement for "wrs_registry". |
Christophe Cleraux | Christophe Cleraux | ||||||
| wrs_registry | 2340 | udp | WRS Registry | Christophe Cleraux | Christophe Cleraux | This entry is an alias to "wrs-registry". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| anet-m | 3340 | tcp | OMF data m | ||||||||
| anet-m | 3340 | udp | OMF data m | ||||||||
| csms2 | 3400 | tcp | CSMS2 | Markus Michels | Markus Michels | ||||||
| csms2 | 3400 | udp | CSMS2 | Markus Michels | Markus Michels | ||||||
| filecast | 3401 | tcp | filecast | Eden Sherry | Eden Sherry | ||||||
| filecast | 3401 | udp | filecast | Eden Sherry | Eden Sherry | ||||||
| fxaengine-net | 3402 | tcp | FXa Engine Network Port | Lucas Alonso | Lucas Alonso | 2002-02 | |||||
| fxaengine-net | 3402 | udp | FXa Engine Network Port | Lucas Alonso | Lucas Alonso | 2002-02 | |||||
| 3403 | De-registered | 2006-10-27 | |||||||||
| 3404 | Removed | 2002-05-01 | |||||||||
| nokia-ann-ch1 | 3405 | tcp | Nokia Announcement ch 1 | ||||||||
| nokia-ann-ch1 | 3405 | udp | Nokia Announcement ch 1 | ||||||||
| nokia-ann-ch2 | 3406 | tcp | Nokia Announcement ch 2 | Morteza Kalhour | Morteza Kalhour | 2002-02 | |||||
| nokia-ann-ch2 | 3406 | udp | Nokia Announcement ch 2 | Morteza Kalhour | Morteza Kalhour | 2002-02 | |||||
| ldap-admin | 3407 | tcp | LDAP admin server port | Stephen Tsun | Stephen Tsun | 2002-02 | |||||
| ldap-admin | 3407 | udp | LDAP admin server port | Stephen Tsun | Stephen Tsun | 2002-02 | |||||
| BESApi | 3408 | tcp | BES Api Port | Colin Griffiths | Colin Griffiths | 2002-02 | |||||
| BESApi | 3408 | udp | BES Api Port | Colin Griffiths | Colin Griffiths | 2002-02 | |||||
| networklens | 3409 | tcp | NetworkLens Event Port | ||||||||
| networklens | 3409 | udp | NetworkLens Event Port | ||||||||
| gaia | 4340 | tcp | Gaia Connector Protocol | Philippe Detournay | Philippe Detournay | 2007-11-12 | |||||
| gaia | 4340 | udp | Gaia Connector Protocol | Philippe Detournay | Philippe Detournay | 2007-11-12 | |||||
| gribi | 9340 | tcp | gRPC Routing Information Base Interface | Google Networking | Rob Shakir | 2022-03-29 | |||||
| 9340 | udp | Reserved | |||||||||
| doip-data | 13400 | tcp | DoIP Data | Joerg Schneider | Joerg Schneider | 2011-01-26 | |||||
| doip-disc | 13400 | udp | DoIP Discovery | Joerg Schneider | Joerg Schneider | 2011-01-26 | |||||
| 13401-13719 | Unassigned | ||||||||||
| novar-dbase | 23400 | tcp | Novar Data | Keith Kilroy | Keith Kilroy | 2006-02 | |||||
| novar-dbase | 23400 | udp | Novar Data | Keith Kilroy | Keith Kilroy | 2006-02 | |||||
| novar-alarm | 23401 | tcp | Novar Alarm | Keith Kilroy | Keith Kilroy | 2006-02 | |||||
| novar-alarm | 23401 | udp | Novar Alarm | Keith Kilroy | Keith Kilroy | 2006-02 | |||||
| novar-global | 23402 | tcp | Novar Global | Keith Kilroy | Keith Kilroy | 2006-02 | |||||
| novar-global | 23402 | udp | Novar Global | Keith Kilroy | Keith Kilroy | 2006-02 | |||||
| 23403-23455 | Unassigned |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Christophe Cleraux | chrisc&wrs.com | ||
| Colin Griffiths | colin.griffiths&interlinksoftware.com | 2002-02 | |
| Eddie Kohler | IETF dccp WG | kohler&cs.ucla.edu | |
| Eden Sherry | eden&pair.com | ||
| Google Networking | gribi-maintainers&google.com | 2022-03-29 | |
| Henry Haverinen | henry.haverinen&nokia.com | ||
| Joerg Schneider | joerg.s.schneider&daimler.com | 2011-01-26 | |
| Keith Kilroy | Keith.Kilroy&novarcontrols.com | 2006-02 | |
| Lucas Alonso | luke&demiurgestudios.com | 2002-02 | |
| Markus Michels | mmi&cedros.com | ||
| Morteza Kalhour | Morteza.Kalhour&nokia.com | 2002-02 | |
| Philippe Detournay | philippe.detournay&acrosoft.be | 2007-11-12 | |
| Rob Shakir | Google Networking | robjs&google.com | 2022-03-29 |
| Stephen Tsun | stsun&calient.net | 2002-02 |