Service Name and Transport Protocol Port Number Registry
Last Updated
- 2026-10-22
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| lmp | 701 | tcp | Link Management Protocol (LMP) | RFC 4204 | |||||||
| lmp | 701 | udp | Link Management Protocol (LMP) | RFC 4204 | |||||||
| l2f | 1701 | tcp | l2f | ||||||||
| l2f | 1701 | udp | l2f | ||||||||
| l2tp | 1701 | tcp | l2tp | Andy Valencia | Andy Valencia | ||||||
| l2tp | 1701 | udp | l2tp | Andy Valencia | Andy Valencia | ||||||
| sms-rcinfo | 2701 | tcp | SMS RCINFO | ||||||||
| sms-rcinfo | 2701 | udp | SMS RCINFO | ||||||||
| netcelera | 3701 | tcp | NetCelera | Tarek Nabhan | Tarek Nabhan | 2003-02 | |||||
| netcelera | 3701 | udp | NetCelera | Tarek Nabhan | Tarek Nabhan | 2003-02 | |||||
| netxms-mgmt | 4701 | tcp | NetXMS Management | ||||||||
| netxms-mgmt | 4701 | udp | NetXMS Management | ||||||||
| 5701-5704 | Unassigned | ||||||||||
| ieee11073-20701 | 6464 | tcp | Port assignment for medical device communication in accordance to IEEE 11073-20701 | David Gregorczyk | David Gregorczyk | 2017-03-02 | |||||
| ieee11073-20701 | 6464 | udp | Port assignment for medical device communication in accordance to IEEE 11073-20701 | David Gregorczyk | David Gregorczyk | 2017-03-02 | |||||
| kti-icad-srvr | 6701 | tcp | KTI/ICAD Nameserver | Stanley Knutson | Stanley Knutson | ||||||
| kti-icad-srvr | 6701 | udp | KTI/ICAD Nameserver | Stanley Knutson | Stanley Knutson | ||||||
| 6701 | sctp | Unassigned | 2010-01-26 | ||||||||
| ups-onlinet | 7010 | tcp | onlinet uninterruptable power supplies | Jim Thompson | Jim Thompson | ||||||
| ups-onlinet | 7010 | udp | onlinet uninterruptable power supplies | Jim Thompson | Jim Thompson | ||||||
| talon-disc | 7011 | tcp | Talon Discovery Port | Jim Thompson | Jim Thompson | Known Unauthorized Use on 7011 | |||||
| talon-disc | 7011 | udp | Talon Discovery Port | Jim Thompson | Jim Thompson | Known Unauthorized Use on 7011 | |||||
| talon-engine | 7012 | tcp | Talon Engine | Jim Thompson | Jim Thompson | Known Unauthorized Use on 7011 | |||||
| talon-engine | 7012 | udp | Talon Engine | Jim Thompson | Jim Thompson | Known Unauthorized Use on 7011 | |||||
| microtalon-dis | 7013 | tcp | Microtalon Discovery | Jim Thompson | Jim Thompson | ||||||
| microtalon-dis | 7013 | udp | Microtalon Discovery | Jim Thompson | Jim Thompson | ||||||
| microtalon-com | 7014 | tcp | Microtalon Communications | Jim Thompson | Jim Thompson | ||||||
| microtalon-com | 7014 | udp | Microtalon Communications | Jim Thompson | Jim Thompson | ||||||
| talon-webserver | 7015 | tcp | Talon Webserver | Jim Thompson | Jim Thompson | ||||||
| talon-webserver | 7015 | udp | Talon Webserver | Jim Thompson | Jim Thompson | ||||||
| spg | 7016 | tcp | SPG Controls Carrier | SPG Controls Ltd | Steve Barton | 2017-03-27 | |||||
| spg | 7016 | udp | SPG Controls Carrier | SPG Controls Ltd | Steve Barton | 2017-03-27 | |||||
| grasp | 7017 | tcp | GeneRic Autonomic Signaling Protocol | IESG | IETF Chair | 2017-04-28 | 2017-07-20 | RFC 8990 | |||
| grasp | 7017 | udp | GeneRic Autonomic Signaling Protocol | IESG | IETF Chair | 2017-04-28 | 2017-07-20 | RFC 8990 | |||
| fisa-svc | 7018 | tcp | FISA Service | FAUCONNET Ingénierie SA | FAUCONNET Ingénierie SA | 2011-05-19 | |||||
| 7018 | udp | Reserved | |||||||||
| doceri-ctl | 7019 | tcp | doceri drawing service control | Paul Brown | Paul Brown | 2011-04-27 | |||||
| doceri-view | 7019 | udp | doceri drawing service screen view | Paul Brown | Paul Brown | 2011-04-27 | |||||
| 7701 | tcp | Reserved | |||||||||
| 7701 | udp | Reserved | |||||||||
| nfapi | 7701 | sctp | SCF nFAPI defining MAC/PHY split | Small Cell Forum | Richard Kennedy | 2017-01-24 | |||||
| 9701-9746 | Unassigned | ||||||||||
| ncpu | 17010 | tcp | Plan 9 cpu port | Ronald G. Minnich | Ronald G. Minnich | 2022-05-13 | Defined TXT keys: u=username; k=keypattern; f=fstabFILE; n=namespace; h=hostkey; r=root | ||||
| 17010 | udp | Reserved | |||||||||
| 17011-17183 | Unassigned | ||||||||||
| flex-lmadmin | 27010 | tcp | A protocol for managing license services | Flexera | Paul Bland | 2018-08-22 | |||||
| 27010 | udp | Reserved | |||||||||
| 27011-27015 | Unassigned | ||||||||||
| chlenix | 27016 | tcp | Cloud hosting environment network | Vlad Bondarenko | Vlad Bondarenko | 2024-09-23 | |||||
| 27016 | udp | Reserved | |||||||||
| mongodb | 27017 | tcp | Mongo database system | MongoDB, Inc. | Akshay Kumar | 2019-02-21 | |||||
| 27017 | udp | Reserved | |||||||||
| 27018-27344 | Unassigned | Unauthorized Use Known on ports 27018 and 27019 | |||||||||
| 36701-36864 | Unassigned |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Akshay Kumar | MongoDB, Inc. | akshay&mongodb.com | 2019-02-21 |
| Andy Valencia | vandys&vandys-lap.cisco.com | ||
| David Gregorczyk | david.gregorczyk&draeger.com | 2017-03-02 | |
| FAUCONNET Ingénierie SA | dev&fisa.fr | 2011-05-19 | |
| Flexera | pbland&flexera.com | 2018-08-22 | |
| IESG | iesg&ietf.org | ||
| IETF Chair | IETF | chair&ietf.org | |
| Jim Thompson | jim.thompson&powerware.com | ||
| MongoDB, Inc. | akshay&mongodb.com | 2019-02-21 | |
| Paul Bland | pbland&flexera.com | 2018-08-22 | |
| Paul Brown | pbrown&spcontrols.com | 2011-04-27 | |
| Richard Kennedy | Richard&smallcellforum.org | 2017-01-24 | |
| Ronald G. Minnich | rminnich&gmail.com | 2022-05-13 | |
| Small Cell Forum | Richard&smallcellforum.org | 2017-01-24 | |
| SPG Controls Ltd | steveb&spgcontrols.com | 2017-03-27 | |
| Stanley Knutson | Stanley.Knutson&ktiworld.com | ||
| Steve Barton | SPG Controls Ltd | steveb&spgcontrols.com | 2017-03-27 |
| Tarek Nabhan | standards&itworx.com | 2003-02 | |
| Vlad Bondarenko | bondarenko.vlad.univ&gmail.com | 2024-09-23 |