Service Name and Transport Protocol Port Number Registry
Last Updated
- 2026-10-13
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| remote-as | 1053 | tcp | Remote Assistant (RA) | Roman Kriis | Roman Kriis | Unauthorized Use Known on port 1053 | |||||
| remote-as | 1053 | udp | Remote Assistant (RA) | Roman Kriis | Roman Kriis | ||||||
| brvread | 1054 | tcp | BRVREAD | A. Boninn | A. Boninn | ||||||
| brvread | 1054 | udp | BRVREAD | A. Boninn | A. Boninn | ||||||
| ansyslmd | 1055 | tcp | ANSYS - License Manager | Suzanne Lorrin | Suzanne Lorrin | ||||||
| ansyslmd | 1055 | udp | ANSYS - License Manager | Suzanne Lorrin | Suzanne Lorrin | ||||||
| vfo | 1056 | tcp | VFO | Anthony Gonzalez | Anthony Gonzalez | ||||||
| vfo | 1056 | udp | VFO | Anthony Gonzalez | Anthony Gonzalez | ||||||
| startron | 1057 | tcp | STARTRON | Markus Sabadello | Markus Sabadello | ||||||
| startron | 1057 | udp | STARTRON | Markus Sabadello | Markus Sabadello | ||||||
| nim | 1058 | tcp | nim | ||||||||
| nim | 1058 | udp | nim | ||||||||
| nimreg | 1059 | tcp | nimreg | Robert Gordon | Robert Gordon | ||||||
| nimreg | 1059 | udp | nimreg | Robert Gordon | Robert Gordon | ||||||
| polestar | 1060 | tcp | POLESTAR | Masakuni Okada | Masakuni Okada | ||||||
| polestar | 1060 | udp | POLESTAR | Masakuni Okada | Masakuni Okada | ||||||
| kiosk | 1061 | tcp | KIOSK | Ken Ksiazek | Ken Ksiazek | ||||||
| kiosk | 1061 | udp | KIOSK | Ken Ksiazek | Ken Ksiazek | ||||||
| veracity | 1062 | tcp | Veracity | Ross Williams | Ross Williams | ||||||
| veracity | 1062 | udp | Veracity | Ross Williams | Ross Williams | ||||||
| kyoceranetdev | 1063 | tcp | KyoceraNetDev | Shigenaka Kanemitsu | Shigenaka Kanemitsu | ||||||
| kyoceranetdev | 1063 | udp | KyoceraNetDev | Shigenaka Kanemitsu | Shigenaka Kanemitsu | ||||||
| jstel | 1064 | tcp | JSTEL | Duane Kiser | Duane Kiser | ||||||
| jstel | 1064 | udp | JSTEL | Duane Kiser | Duane Kiser | ||||||
| syscomlan | 1065 | tcp | SYSCOMLAN | Alexandre Lechenne | Alexandre Lechenne | 2008-12-10 | |||||
| syscomlan | 1065 | udp | SYSCOMLAN | Alexandre Lechenne | Alexandre Lechenne | 2008-12-10 | |||||
| fpo-fns | 1066 | tcp | FPO-FNS | Jens Klose | Jens Klose | ||||||
| fpo-fns | 1066 | udp | FPO-FNS | Jens Klose | Jens Klose | ||||||
| instl-boots | 1067 | tcp | Installation Bootstrap Proto. Serv. IANA assigned this well-formed service name as a replacement for "instl_boots". |
||||||||
| instl_boots | 1067 | tcp | Installation Bootstrap Proto. Serv. | This entry is an alias to "instl-boots". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||||
| instl-boots | 1067 | udp | Installation Bootstrap Proto. Serv. IANA assigned this well-formed service name as a replacement for "instl_boots". |
||||||||
| instl_boots | 1067 | udp | Installation Bootstrap Proto. Serv. | This entry is an alias to "instl-boots". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||||
| instl-bootc | 1068 | tcp | Installation Bootstrap Proto. Cli. IANA assigned this well-formed service name as a replacement for "instl_bootc". |
David Arko | David Arko | ||||||
| instl_bootc | 1068 | tcp | Installation Bootstrap Proto. Cli. | David Arko | David Arko | This entry is an alias to "instl-bootc". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| instl-bootc | 1068 | udp | Installation Bootstrap Proto. Cli. IANA assigned this well-formed service name as a replacement for "instl_bootc". |
David Arko | David Arko | ||||||
| instl_bootc | 1068 | udp | Installation Bootstrap Proto. Cli. | David Arko | David Arko | This entry is an alias to "instl-bootc". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
| cognex-insight | 1069 | tcp | COGNEX-INSIGHT | Steve Olson | Steve Olson | ||||||
| cognex-insight | 1069 | udp | COGNEX-INSIGHT | Steve Olson | Steve Olson | ||||||
| gmrupdateserv | 1070 | tcp | GMRUpdateSERV | Steve Kellogg | Steve Kellogg | ||||||
| gmrupdateserv | 1070 | udp | GMRUpdateSERV | Steve Kellogg | Steve Kellogg | ||||||
| bsquare-voip | 1071 | tcp | BSQUARE-VOIP | Yen Lee | Yen Lee | ||||||
| bsquare-voip | 1071 | udp | BSQUARE-VOIP | Yen Lee | Yen Lee | ||||||
| cardax | 1072 | tcp | CARDAX | Charles Oram | Charles Oram | ||||||
| cardax | 1072 | udp | CARDAX | Charles Oram | Charles Oram | ||||||
| bridgecontrol | 1073 | tcp | Bridge Control | Andy Heron | Andy Heron | ||||||
| bridgecontrol | 1073 | udp | Bridge Control | Andy Heron | Andy Heron | ||||||
| warmspotMgmt | 1074 | tcp | Warmspot Management Protocol | Robert C. Henningsgard | Robert C. Henningsgard | ||||||
| warmspotMgmt | 1074 | udp | Warmspot Management Protocol | Robert C. Henningsgard | Robert C. Henningsgard | ||||||
| rdrmshc | 1075 | tcp | RDRMSHC | Ericko Shimada | Ericko Shimada | ||||||
| rdrmshc | 1075 | udp | RDRMSHC | Ericko Shimada | Ericko Shimada | ||||||
| dab-sti-c | 1076 | tcp | DAB STI-C | World DAB | World DAB | ||||||
| dab-sti-c | 1076 | udp | DAB STI-C | World DAB | World DAB | ||||||
| imgames | 1077 | tcp | IMGames | Jean A. Ames | Jean A. Ames | ||||||
| imgames | 1077 | udp | IMGames | Jean A. Ames | Jean A. Ames | ||||||
| avocent-proxy | 1078 | tcp | Avocent Proxy Protocol | Steven W. Clark | Steven W. Clark | ||||||
| avocent-proxy | 1078 | udp | Avocent Proxy Protocol | Steven W. Clark | Steven W. Clark | ||||||
| asprovatalk | 1079 | tcp | ASPROVATalk | Chiew Farn Chung | Chiew Farn Chung | ||||||
| asprovatalk | 1079 | udp | ASPROVATalk | Chiew Farn Chung | Chiew Farn Chung | ||||||
| socks | 1080 | tcp | Socks | Ying-Da Lee | Ying-Da Lee | ||||||
| socks | 1080 | udp | Socks | Ying-Da Lee | Ying-Da Lee | ||||||
| pvuniwien | 1081 | tcp | PVUNIWIEN | Peter Lipp | Peter Lipp | ||||||
| pvuniwien | 1081 | udp | PVUNIWIEN | Peter Lipp | Peter Lipp | ||||||
| amt-esd-prot | 1082 | tcp | AMT-ESD-PROT | AMTEC S.p.A | AMTEC S.p.A | ||||||
| amt-esd-prot | 1082 | udp | AMT-ESD-PROT | AMTEC S.p.A | AMTEC S.p.A | ||||||
| ansoft-lm-1 | 1083 | tcp | Anasoft License Manager | ||||||||
| ansoft-lm-1 | 1083 | udp | Anasoft License Manager | ||||||||
| ansoft-lm-2 | 1084 | tcp | Anasoft License Manager | ||||||||
| ansoft-lm-2 | 1084 | udp | Anasoft License Manager | ||||||||
| webobjects | 1085 | tcp | Web Objects | Andy Belk | Andy Belk | ||||||
| webobjects | 1085 | udp | Web Objects | Andy Belk | Andy Belk | ||||||
| cplscrambler-lg | 1086 | tcp | CPL Scrambler Logging | ||||||||
| cplscrambler-lg | 1086 | udp | CPL Scrambler Logging | ||||||||
| cplscrambler-in | 1087 | tcp | CPL Scrambler Internal | ||||||||
| cplscrambler-in | 1087 | udp | CPL Scrambler Internal | ||||||||
| cplscrambler-al | 1088 | tcp | CPL Scrambler Alarm Log | Richard Corn | Richard Corn | ||||||
| cplscrambler-al | 1088 | udp | CPL Scrambler Alarm Log | Richard Corn | Richard Corn | ||||||
| ff-annunc | 1089 | tcp | FF Annunciation | ||||||||
| ff-annunc | 1089 | udp | FF Annunciation | ||||||||
| ff-fms | 1090 | tcp | FF Fieldbus Message Specification | ||||||||
| ff-fms | 1090 | udp | FF Fieldbus Message Specification | ||||||||
| ff-sm | 1091 | tcp | FF System Management | Fieldbus Foundation | Fieldbus Foundation | ||||||
| ff-sm | 1091 | udp | FF System Management | Fieldbus Foundation | Fieldbus Foundation | ||||||
| obrpd | 1092 | tcp | Open Business Reporting Protocol | William Randolph Royere III | William Randolph Royere III | ||||||
| obrpd | 1092 | udp | Open Business Reporting Protocol | William Randolph Royere III | William Randolph Royere III | ||||||
| proofd | 1093 | tcp | PROOFD | ||||||||
| proofd | 1093 | udp | PROOFD | ||||||||
| rootd | 1094 | tcp | ROOTD | Fons Rademakers | Fons Rademakers | ||||||
| rootd | 1094 | udp | ROOTD | Fons Rademakers | Fons Rademakers | ||||||
| nicelink | 1095 | tcp | NICELink | Jordi Lisbona | Jordi Lisbona | ||||||
| nicelink | 1095 | udp | NICELink | Jordi Lisbona | Jordi Lisbona | ||||||
| cnrprotocol | 1096 | tcp | Common Name Resolution Protocol | Michael Mealling | Michael Mealling | ||||||
| cnrprotocol | 1096 | udp | Common Name Resolution Protocol | Michael Mealling | Michael Mealling | ||||||
| sunclustermgr | 1097 | tcp | Sun Cluster Manager | Ashit Patel | Ashit Patel | ||||||
| sunclustermgr | 1097 | udp | Sun Cluster Manager | Ashit Patel | Ashit Patel | ||||||
| rmiactivation | 1098 | tcp | RMI Activation | ||||||||
| rmiactivation | 1098 | udp | RMI Activation | ||||||||
| rmiregistry | 1099 | tcp | RMI Registry | Mark Hodapp | Mark Hodapp | ||||||
| rmiregistry | 1099 | udp | RMI Registry | Mark Hodapp | Mark Hodapp | ||||||
| mctp | 1100 | tcp | MCTP | Vitaly Revsin | Vitaly Revsin | ||||||
| mctp | 1100 | udp | MCTP | Vitaly Revsin | Vitaly Revsin | ||||||
| pt2-discover | 1101 | tcp | PT2-DISCOVER | Ralph Kammerlander | Ralph Kammerlander |