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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 301-307 | Unassigned | ||||||||||
| 1301 | tcp | Reserved | 2019-10-30 | De-Assigned on 2019-10-30 | |||||||
| 1301 | udp | Reserved | 2019-10-30 | De-Assigned on 2019-10-30 | |||||||
| cpq-wbem | 2301 | tcp | Compaq HTTP | Scott Shaffer | Scott Shaffer | ||||||
| cpq-wbem | 2301 | udp | Compaq HTTP | Scott Shaffer | Scott Shaffer | ||||||
| gw | 3010 | tcp | Telerate Workstation | ||||||||
| ping-pong | 3010 | udp | Telerate Workstation | Timo Sivonen | Timo Sivonen | ||||||
| trusted-web | 3011 | tcp | Trusted Web | ||||||||
| trusted-web | 3011 | udp | Trusted Web | ||||||||
| twsdss | 3012 | tcp | Trusted Web Client | Alex Duncan | Alex Duncan | ||||||
| twsdss | 3012 | udp | Trusted Web Client | Alex Duncan | Alex Duncan | ||||||
| gilatskysurfer | 3013 | tcp | Gilat Sky Surfer | Yossi Gal | Yossi Gal | ||||||
| gilatskysurfer | 3013 | udp | Gilat Sky Surfer | Yossi Gal | Yossi Gal | ||||||
| broker-service | 3014 | tcp | Broker Service IANA assigned this well-formed service name as a replacement for "broker_service". |
Dale Bethers | Dale Bethers | ||||||
| broker_service | 3014 | tcp | Broker Service | Dale Bethers | Dale Bethers | This entry is an alias to "broker-service". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| broker-service | 3014 | udp | Broker Service IANA assigned this well-formed service name as a replacement for "broker_service". |
Dale Bethers | Dale Bethers | ||||||
| broker_service | 3014 | udp | Broker Service | Dale Bethers | Dale Bethers | This entry is an alias to "broker-service". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| nati-dstp | 3015 | tcp | NATI DSTP | Paul Austin | Paul Austin | ||||||
| nati-dstp | 3015 | udp | NATI DSTP | Paul Austin | Paul Austin | ||||||
| notify-srvr | 3016 | tcp | Notify Server IANA assigned this well-formed service name as a replacement for "notify_srvr". |
Hugo Parra | Hugo Parra | ||||||
| notify_srvr | 3016 | tcp | Notify Server | Hugo Parra | Hugo Parra | This entry is an alias to "notify-srvr". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| notify-srvr | 3016 | udp | Notify Server IANA assigned this well-formed service name as a replacement for "notify_srvr". |
Hugo Parra | Hugo Parra | ||||||
| notify_srvr | 3016 | udp | Notify Server | Hugo Parra | Hugo Parra | This entry is an alias to "notify-srvr". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| event-listener | 3017 | tcp | Event Listener IANA assigned this well-formed service name as a replacement for "event_listener". |
Ted Tronson | Ted Tronson | ||||||
| event_listener | 3017 | tcp | Event Listener | Ted Tronson | Ted Tronson | This entry is an alias to "event-listener". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| event-listener | 3017 | udp | Event Listener IANA assigned this well-formed service name as a replacement for "event_listener". |
Ted Tronson | Ted Tronson | ||||||
| event_listener | 3017 | udp | Event Listener | Ted Tronson | Ted Tronson | This entry is an alias to "event-listener". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| srvc-registry | 3018 | tcp | Service Registry IANA assigned this well-formed service name as a replacement for "srvc_registry". |
Mark Killgore | Mark Killgore | ||||||
| srvc_registry | 3018 | tcp | Service Registry | Mark Killgore | Mark Killgore | This entry is an alias to "srvc-registry". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| srvc-registry | 3018 | udp | Service Registry IANA assigned this well-formed service name as a replacement for "srvc_registry". |
Mark Killgore | Mark Killgore | ||||||
| srvc_registry | 3018 | udp | Service Registry | Mark Killgore | Mark Killgore | This entry is an alias to "srvc-registry". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| resource-mgr | 3019 | tcp | Resource Manager IANA assigned this well-formed service name as a replacement for "resource_mgr". |
Gary Glover | Gary Glover | ||||||
| resource_mgr | 3019 | tcp | Resource Manager | Gary Glover | Gary Glover | This entry is an alias to "resource-mgr". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| resource-mgr | 3019 | udp | Resource Manager IANA assigned this well-formed service name as a replacement for "resource_mgr". |
Gary Glover | Gary Glover | ||||||
| resource_mgr | 3019 | udp | Resource Manager | Gary Glover | Gary Glover | This entry is an alias to "resource-mgr". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| tarantool | 3301 | tcp | Tarantool in-memory computing platform | Tarantool | Alexander Turenko | 2022-06-10 | Known Unauthorized Use on port 3301 | ||||
| tarantool | 3301 | udp | Tarantool in-memory computing platform | Tarantool | Alexander Turenko | 2022-06-10 | Known Unauthorized Use on port 3301 | ||||
| d-data | 4301 | tcp | Diagnostic Data | ||||||||
| d-data | 4301 | udp | Diagnostic Data | ||||||||
| lisp-control | 4342 | udp | LISP Control Packets | IETF | IESG | 2007-05 | 2021-02-25 | RFC 9301 | |||
| hacl-gs | 5301 | tcp | HA cluster general services | Eric Soderberg; Edward Yim | Eric Soderberg; Edward Yim | ||||||
| hacl-gs | 5301 | udp | HA cluster general services | Eric Soderberg; Edward Yim | Eric Soderberg; Edward Yim | ||||||
| coaps | 5684 | tcp | Constrained Application Protocol (CoAP) | IESG | IETF Chair | 2017-12-22 | RFC 7301; RFC 8323 | ||||
| bmc-ctd-ldap | 6301 | tcp | BMC CONTROL-D LDAP SERVER IANA assigned this well-formed service name as a replacement for "bmc_ctd_ldap". |
Portnoy Boxman | Portnoy Boxman | 2006-09 | |||||
| bmc_ctd_ldap | 6301 | tcp | BMC CONTROL-D LDAP SERVER | Portnoy Boxman | Portnoy Boxman | 2006-09 | This entry is an alias to "bmc-ctd-ldap". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| bmc-ctd-ldap | 6301 | udp | BMC CONTROL-D LDAP SERVER IANA assigned this well-formed service name as a replacement for "bmc_ctd_ldap". |
Portnoy Boxman | Portnoy Boxman | 2006-09 | |||||
| bmc_ctd_ldap | 6301 | udp | BMC CONTROL-D LDAP SERVER | Portnoy Boxman | Portnoy Boxman | 2006-09 | This entry is an alias to "bmc-ctd-ldap". This entry is now historic, not usable for use with many common service discovery mechanisms. | ||||
| amberon | 8301 | tcp | Amberon PPC/PPS | Ronald Snyder | Ronald Snyder | 2006-03 | |||||
| amberon | 8301 | udp | Amberon PPC/PPS | Ronald Snyder | Ronald Snyder | 2006-03 | |||||
| 9301-9305 | Unassigned | ||||||||||
| 12301 | Unassigned | ||||||||||
| rwp | 30100 | tcp | Remote Window Protocol | Maxim Baklanovsky | Maxim Baklanovsky | 2015-05-20 | |||||
| 30100 | udp | Reserved | |||||||||
| rwp | 30100 | sctp | Remote Window Protocol | Maxim Baklanovsky | Maxim Baklanovsky | 2015-05-20 | |||||
| 30101-30259 | Unassigned |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Alex Duncan | alex.duncan&sse.ie | ||
| Alexander Turenko | Tarantool | alexander.turenko&tarantool.org | 2022-06-10 |
| Dale Bethers | dbethers&novell.com | ||
| Edward Yim | eyim&hpmfas4.cup.hp.com | ||
| Eric Soderberg | seric&hposl102.cup.hp | ||
| Gary Glover | gglover&novell.com | ||
| Hugo Parra | hparra&novell.com | ||
| IESG | iesg&ietf.org | ||
| IETF | iesg&ietf.org | ||
| IETF Chair | IETF | chair&ietf.org | |
| Mark Killgore | MKillgore&novell.com | ||
| Maxim Baklanovsky | m.baklanovsky&spbu.ru | 2015-05-20 | |
| Paul Austin | paul.austin&natinst.com | ||
| Portnoy Boxman | Portnoy_Boxman&bmc.com | 2006-09 | |
| Ronald Snyder | pugaroni&sssnet.com | 2006-03 | |
| Scott Shaffer | scott.shaffer&hp.com | ||
| Tarantool | admin&tarantool.org | 2022-06-10 | |
| Ted Tronson | ttronson&novell.com | ||
| Timo Sivonen | timo.sivonen&ccmail.dowjones.com | ||
| Yossi Gal | yossi&gilat.com |