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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| hp-managed-node | 382 | tcp | hp performance data managed node | ||||||||
| hp-managed-node | 382 | udp | hp performance data managed node | ||||||||
| udt-os | 1382 | tcp | udt_os IANA assigned this well-formed service name as a replacement for "udt_os". |
||||||||
| udt_os | 1382 | tcp | udt_os | This entry is an alias to "udt-os". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||||
| udt-os | 1382 | udp | udt_os IANA assigned this well-formed service name as a replacement for "udt_os". |
||||||||
| udt_os | 1382 | udp | udt_os | This entry is an alias to "udt-os". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||||
| ms-olap3 | 2382 | tcp | Microsoft OLAP | ||||||||
| ms-olap3 | 2382 | udp | Microsoft OLAP | ||||||||
| fcip-port | 3225 | tcp | FCIP | RFC 3821 | |||||||
| fcip-port | 3225 | udp | FCIP | RFC 3821 | |||||||
| fujitsu-neat | 3382 | tcp | Fujitsu Network Enhanced Antitheft function | Markku Viima | Markku Viima | ||||||
| fujitsu-neat | 3382 | udp | Fujitsu Network Enhanced Antitheft function | Markku Viima | Markku Viima | ||||||
| scp | 3820 | tcp | Siemens AuD SCP | Johann Arnold | Johann Arnold | 2004-10 | |||||
| scp | 3820 | udp | Siemens AuD SCP | Johann Arnold | Johann Arnold | 2004-10 | |||||
| pmcp | 3821 | tcp | ATSC PMCP Standard | Graham Jones | Graham Jones | 2004-11 | |||||
| pmcp | 3821 | udp | ATSC PMCP Standard | Graham Jones | Graham Jones | 2004-11 | |||||
| acp-discovery | 3822 | tcp | Compute Pool Discovery | ||||||||
| acp-discovery | 3822 | udp | Compute Pool Discovery | ||||||||
| acp-conduit | 3823 | tcp | Compute Pool Conduit | ||||||||
| acp-conduit | 3823 | udp | Compute Pool Conduit | ||||||||
| acp-policy | 3824 | tcp | Compute Pool Policy | Andy Belk | Andy Belk | 2005-02 | |||||
| acp-policy | 3824 | udp | Compute Pool Policy | Andy Belk | Andy Belk | 2005-02 | |||||
| ffserver | 3825 | tcp | Antera FlowFusion Process Simulation | Armin Liebchen | Armin Liebchen | 2007-06 | |||||
| ffserver | 3825 | udp | Antera FlowFusion Process Simulation | Armin Liebchen | Armin Liebchen | 2007-06 | |||||
| warmux | 3826 | tcp | WarMUX game server | Christophe Gisquet | Christophe Gisquet | 2011-05-26 | |||||
| warmux | 3826 | udp | WarMUX game server | Christophe Gisquet | Christophe Gisquet | 2011-05-26 | |||||
| netmpi | 3827 | tcp | Netadmin Systems MPI service | Göran Runfeldt | Göran Runfeldt | 2007-07-10 | |||||
| netmpi | 3827 | udp | Netadmin Systems MPI service | Göran Runfeldt | Göran Runfeldt | 2007-07-10 | |||||
| neteh | 3828 | tcp | Netadmin Systems Event Handler | ||||||||
| neteh | 3828 | udp | Netadmin Systems Event Handler | ||||||||
| neteh-ext | 3829 | tcp | Netadmin Systems Event Handler External | Jonas Krogell | Jonas Krogell | 2007-07-10 | |||||
| neteh-ext | 3829 | udp | Netadmin Systems Event Handler External | Jonas Krogell | Jonas Krogell | 2007-07-10 | |||||
| metatude-mds | 6382 | tcp | Metatude Dialogue Server | Menno Zweistra | Menno Zweistra | ||||||
| metatude-mds | 6382 | udp | Metatude Dialogue Server | Menno Zweistra | Menno Zweistra | ||||||
| 8381-8382 | Unassigned | ||||||||||
| dsmcc-passthru | 13820 | tcp | DSMCC Pass-Thru Messages | Tim Addington | Tim Addington | ISO/IEC 13818-6 MPEG-2 DSM-CC | |||||
| dsmcc-passthru | 13820 | udp | DSMCC Pass-Thru Messages | Tim Addington | Tim Addington | ISO/IEC 13818-6 MPEG-2 DSM-CC | |||||
| dsmcc-download | 13821 | tcp | DSMCC Download Protocol | Tim Addington | Tim Addington | ISO/IEC 13818-6 MPEG-2 DSM-CC | |||||
| dsmcc-download | 13821 | udp | DSMCC Download Protocol | Tim Addington | Tim Addington | ISO/IEC 13818-6 MPEG-2 DSM-CC | |||||
| dsmcc-ccp | 13822 | tcp | DSMCC Channel Change Protocol | Tim Addington | Tim Addington | ISO/IEC 13818-6 MPEG-2 DSM-CC | |||||
| dsmcc-ccp | 13822 | udp | DSMCC Channel Change Protocol | Tim Addington | Tim Addington | ISO/IEC 13818-6 MPEG-2 DSM-CC | |||||
| bmdss | 13823 | tcp | Blackmagic Design Streaming Server | Sam Vaughan | Sam Vaughan | 2011-03-01 | |||||
| 13823 | udp | Reserved | |||||||||
| 13824-13831 | Unassigned | ||||||||||
| 38003-38200 | Unassigned | ||||||||||
| galaxy7-data | 38201 | tcp | Galaxy7 Data Tunnel | Tatham Oddie | Tatham Oddie | 2002-09 | |||||
| galaxy7-data | 38201 | udp | Galaxy7 Data Tunnel | Tatham Oddie | Tatham Oddie | 2002-09 | |||||
| fairview | 38202 | tcp | Fairview Message Service | Jim Lyle | Jim Lyle | 2005-11 | Defined TXT keys: DevID=<device id>, DevType=<device type>, DevStat=<device status> | ||||
| fairview | 38202 | udp | Fairview Message Service | Jim Lyle | Jim Lyle | 2005-11 | Defined TXT keys: DevID=<device id>, DevType=<device type>, DevStat=<device status> | ||||
| agpolicy | 38203 | tcp | AppGate Policy Server | Martin Forssen | Martin Forssen | 2004-11 | |||||
| agpolicy | 38203 | udp | AppGate Policy Server | Martin Forssen | Martin Forssen | 2004-11 | |||||
| 38204-38411 | Unassigned |
Contact Information
| Name | Contact URI | Last Updated |
|---|---|---|
| Andy Belk | register1&azulsystems.com | 2005-02 |
| Armin Liebchen | armin&anteradesign.com | 2007-06 |
| Christophe Gisquet | christophe.gisquet&gmail.com | 2011-05-26 |
| Göran Runfeldt | goran&netadmin.se | 2007-07-10 |
| Graham Jones | gjones&nab.org | 2004-11 |
| Jim Lyle | jim.lyle&siliconimage.com | 2005-11 |
| Johann Arnold | johann.arnold&siemens.com | 2004-10 |
| Jonas Krogell | jonas.krogell&netadmin.se | 2007-07-10 |
| Markku Viima | markku.viima&team.icl.se | |
| Martin Forssen | maf&appgate.com | 2004-11 |
| Menno Zweistra | m.zweistra&metatude.com | |
| Sam Vaughan | samv&blackmagic-design.com | 2011-03-01 |
| Tatham Oddie | tatham&e-oddie.com | 2002-09 |
| Tim Addington | Tim.Addington&sciatl.com |