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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ttc-etap-ds | 2978 | udp | TTCs Enterprise Test Access Protocol - DS | Daniel Becker | Daniel Becker | ||||||
| h263-video | 2979 | tcp | H.263 Video Streaming | Jauvane C. de Oliveira | Jauvane C. de Oliveira | ||||||
| h263-video | 2979 | udp | H.263 Video Streaming | Jauvane C. de Oliveira | Jauvane C. de Oliveira | ||||||
| rebol | 2997 | tcp | REBOL | Holger Kruse | Holger Kruse | ||||||
| rebol | 2997 | udp | REBOL | Holger Kruse | Holger Kruse | ||||||
| 3097 | tcp | Reserved | |||||||||
| 3097 | udp | Reserved | |||||||||
| itu-bicc-stc | 3097 | sctp | ITU-T Q.1902.1/Q.2150.3 | Greg Sidebottom | Greg Sidebottom | ||||||
| embrace-dp-s | 3197 | tcp | Embrace Device Protocol Server | ||||||||
| embrace-dp-s | 3197 | udp | Embrace Device Protocol Server | ||||||||
| cytel-lm | 3297 | tcp | Cytel License Manager | Yogesh P. Gajjar | Yogesh P. Gajjar | ||||||
| cytel-lm | 3297 | udp | Cytel License Manager | Yogesh P. Gajjar | Yogesh P. Gajjar | ||||||
| cloanto-lm | 3397 | tcp | Cloanto License Manager | Takeo Sato | Takeo Sato | 2010-04-30 | |||||
| cloanto-lm | 3397 | udp | Cloanto License Manager | Takeo Sato | Takeo Sato | 2010-04-30 | |||||
| ipether232port | 3497 | tcp | ipEther232Port | Marcus Leufgen | Marcus Leufgen | 2002-05 | |||||
| ipether232port | 3497 | udp | ipEther232Port | Marcus Leufgen | Marcus Leufgen | 2002-05 | |||||
| a14 | 3597 | tcp | A14 (AN-to-SC/MM) | ||||||||
| a14 | 3597 | udp | A14 (AN-to-SC/MM) | ||||||||
| nw-license | 3697 | tcp | NavisWorks License System | Tim Wiegand | Tim Wiegand | 2003-02 | |||||
| nw-license | 3697 | udp | NavisWorks License System | Tim Wiegand | Tim Wiegand | 2003-02 | |||||
| idps | 3797 | tcp | idps | Jean-Francois Rabasse | Jean-Francois Rabasse | 2003-07 | |||||
| idps | 3797 | udp | idps | Jean-Francois Rabasse | Jean-Francois Rabasse | 2003-07 | |||||
| sdo-ssh | 3897 | tcp | Simple Distributed Objects over SSH | Alexander Philippou | Alexander Philippou | 2003-10 | |||||
| sdo-ssh | 3897 | udp | Simple Distributed Objects over SSH | Alexander Philippou | Alexander Philippou | 2003-10 | |||||
| lanrevagent | 3970 | tcp | LANrev Agent | Martin Bestmann | Martin Bestmann | Defined TXT keys: txtvers server=<main LANrev server for agent> vers=<version of LANrev Agent> build=<build number of LANrev Agent> id=<agent identifier> |
|||||
| lanrevagent | 3970 | udp | LANrev Agent | Martin Bestmann | Martin Bestmann | Defined TXT keys: txtvers server=<main LANrev server for agent> vers=<version of LANrev Agent> build=<build number of LANrev Agent> id=<agent identifier> |
|||||
| lanrevserver | 3971 | tcp | LANrev Server | Martin Bestmann | Martin Bestmann | 2005-08 | |||||
| lanrevserver | 3971 | udp | LANrev Server | Martin Bestmann | Martin Bestmann | 2005-08 | |||||
| iconp | 3972 | tcp | ict-control Protocol | Roel Harbers | Roel Harbers | 2005-08 | |||||
| iconp | 3972 | udp | ict-control Protocol | Roel Harbers | Roel Harbers | 2005-08 | |||||
| progistics | 3973 | tcp | ConnectShip Progistics | ConnectShip, Inc. | Robert Kinyon | 2005-08 | 2019-12-12 | ||||
| progistics | 3973 | udp | ConnectShip Progistics | ConnectShip, Inc. | Robert Kinyon | 2005-08 | 2019-12-12 | ||||
| xk22 | 3974 | tcp | Remote Applicant Tracking Service | Marc Castelluccio | Marc Castelluccio | 2005-08 | 2022-09-09 | ||||
| xk22 | 3974 | udp | Remote Applicant Tracking Service | Marc Castelluccio | Marc Castelluccio | 2005-08 | 2022-09-09 | ||||
| airshot | 3975 | tcp | Air Shot | Shingo Kimura | Shingo Kimura | 2005-08 | |||||
| airshot | 3975 | udp | Air Shot | Shingo Kimura | Shingo Kimura | 2005-08 | |||||
| opswagent | 3976 | tcp | Server Automation Agent | Hewlett Packard Enterprise | Cristi Fati | 2016-04-14 | |||||
| opswagent | 3976 | udp | Server Automation Agent | Hewlett Packard Enterprise | Cristi Fati | 2016-04-14 | |||||
| opswmanager | 3977 | tcp | Opsware Manager | Dave Jagoda | Dave Jagoda | 2006-06 | |||||
| opswmanager | 3977 | udp | Opsware Manager | Dave Jagoda | Dave Jagoda | 2006-06 | |||||
| secure-cfg-svr | 3978 | tcp | Secured Configuration Server | Dr. Anupam Bharali | Dr. Anupam Bharali | 2006-06 | |||||
| secure-cfg-svr | 3978 | udp | Secured Configuration Server | Dr. Anupam Bharali | Dr. Anupam Bharali | 2006-06 | |||||
| smwan | 3979 | tcp | Smith Micro Wide Area Network Service | David Sperling | David Sperling | 2006-06 | |||||
| smwan | 3979 | udp | Smith Micro Wide Area Network Service | David Sperling | David Sperling | 2006-06 | |||||
| agentsease-db | 3997 | tcp | aes_db | Colin Hughes | Colin Hughes | 2006-02 | |||||
| agentsease-db | 3997 | udp | aes_db | Colin Hughes | Colin Hughes | 2006-02 | |||||
| patrolview | 4097 | tcp | Patrol View | Portnoy Boxman | Portnoy Boxman | ||||||
| patrolview | 4097 | udp | Patrol View | Portnoy Boxman | Portnoy Boxman | ||||||
| hctl | 4197 | tcp | Harman HControl Protocol | Harman International Industries Inc. | Darin Smith | 2017-02-16 | |||||
| hctl | 4197 | udp | Harman HControl Protocol | Harman International Industries Inc. | Darin Smith | 2017-02-16 | |||||
| 4397-4399 | Unassigned | ||||||||||
| a21-an-1xbs | 4597 | tcp | A21 (AN-1xBS) | David Ott | David Ott | 2006-02 | |||||
| a21-an-1xbs | 4597 | udp | A21 (AN-1xBS) | David Ott | David Ott | 2006-02 | |||||
| dots-signal | 4646 | tcp | Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel Protocol. The service name is used to construct the SRV service names "_dots-signal._udp" and "_dots-signal._tcp" for discovering DOTS servers used to establish DOTS signal channel. | IESG | IETF Chair | 2020-01-16 | 2021-06-14 | RFC 8973; RFC 9132 | |||
| dots-signal | 4646 | udp | Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel Protocol. The service name is used to construct the SRV service names "_dots-signal._udp" and "_dots-signal._tcp" for discovering DOTS servers used to establish DOTS signal channel. | IESG | IETF Chair | 2020-01-16 | 2021-06-14 | RFC 8973; RFC 9132 | |||
| ccss-qsm | 4970 | tcp | CCSS QSystemMonitor | David Young | David Young | 2006-01 | |||||
| ccss-qsm | 4970 | udp | CCSS QSystemMonitor | David Young | David Young | 2006-01 | |||||
| burp | 4971 | tcp | BackUp and Restore Program | Marat Khalili | Marat Khalili | 2017-08-23 | |||||
| 4971 | udp | Reserved | |||||||||
| 4972-4979 | Unassigned | ||||||||||
| tunstall-lwp | 5197 | tcp | Tunstall Lone worker device interface | Tunstall Healthcare (UK) Ltd. | Robert Moore | 2014-12-10 | |||||
| 5197 | udp | Reserved | |||||||||
| 5283-5297 | Unassigned | ||||||||||
| stresstester | 5397 | tcp | StressTester(tm) Injector | Graham Parsons | Graham Parsons | 2005-08 | |||||
| stresstester | 5397 | udp | StressTester(tm) Injector | Graham Parsons | Graham Parsons | 2005-08 | |||||
| ininmessaging | 5597 | tcp | inin secure messaging | Mike Gagle | Mike Gagle | 2006-05 | |||||
| ininmessaging | 5597 | udp | inin secure messaging | Mike Gagle | Mike Gagle | 2006-05 | |||||
| 5697-5699 | Unassigned | ||||||||||
| 5795-5797 | Unassigned | ||||||||||
| 5970-5983 | Unassigned | ||||||||||
| ircs-u | 6697 | tcp | Internet Relay Chat via TLS/SSL | 2014-02-11 | RFC 7194 | ||||||
| 6697 | udp | Reserved | 2014-02-11 | ||||||||
| conductor | 6970 | tcp | Conductor test coordination protocol | George Neville-Neil | George Neville-Neil | 2014-09-18 | |||||
| 6970 | udp | Reserved | |||||||||
| conductor-mpx | 6970 | sctp | conductor for multiplex | George Neville-Neil | George Neville-Neil | 2014-07-29 | |||||
| 6971-6979 | Unassigned | ||||||||||
| MobilitySrv | 6997 | tcp | Mobility XE Protocol | Joseph T Savarese | Joseph T Savarese | 2007-06 | |||||
| MobilitySrv | 6997 | udp | Mobility XE Protocol | Joseph T Savarese | Joseph T Savarese | 2007-06 | |||||
| hexarc | 7397 | tcp | Hexarc Command Language | George Moromisato | George Moromisato | 2004-11 | |||||
| hexarc | 7397 | udp | Hexarc Command Language | George Moromisato | George Moromisato | 2004-11 | |||||
| klio | 7697 | tcp | KLIO communications | Helmut Giritzer | Helmut Giritzer | 2005-08 | |||||
| klio | 7697 | udp | KLIO communications | Helmut Giritzer | Helmut Giritzer | 2005-08 | |||||
| pnet-conn | 7797 | tcp | Propel Connector port | ||||||||
| pnet-conn | 7797 | udp | Propel Connector port | ||||||||
| 7968-7978 | Unassigned | ||||||||||
| micromuse-ncps | 7979 | tcp | Micromuse-ncps | Hing Wing To | Hing Wing To | ||||||
| micromuse-ncps | 7979 | udp | Micromuse-ncps | Hing Wing To | Hing Wing To | ||||||
| 7983-7997 | Unassigned | ||||||||||
| pushns | 7997 | tcp | PUSH Notification Service | Tristan Seifert | Tristan Seifert | 2011-01-31 | |||||
| 7997 | udp | Reserved | |||||||||
| sac | 8097 | tcp | SAC Port Id | Girish Bhat | Girish Bhat | 2006-04 | |||||
| sac | 8097 | udp | SAC Port Id | Girish Bhat | Girish Bhat | 2006-04 | |||||
| 8955-8979 | Unassigned | ||||||||||
| oracle-ms-ens | 8997 | tcp | Oracle Messaging Server Event Notification Service | Oracle Corp. | Hubert Vijay Arokiasamy | 2014-10-28 | |||||
| 8997 | udp | Reserved | |||||||||
| mpidcagt | 9397 | tcp | MpIdcAgt | Yutaka Ono | Yutaka Ono | ||||||
| mpidcagt | 9397 | udp | MpIdcAgt | Yutaka Ono | Yutaka Ono | ||||||
| pd-admin | 9597 | tcp | PD Administration | Duk Loi | Duk Loi | 2005-11 | |||||
| pd-admin | 9597 | udp | PD Administration | Duk Loi | Duk Loi | 2005-11 | |||||
| board-roar | 9700 | tcp | Board M.I.T. Service | Francesco Rosi | Francesco Rosi | 2006-01 | |||||
| board-roar | 9700 | udp | Board M.I.T. Service | Francesco Rosi | Francesco Rosi | 2006-01 |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Alexander Philippou | alex&noemax.com | 2003-10 | |
| Colin Hughes | chughes&agentsease.net | 2006-02 | |
| ConnectShip, Inc. | ConnectShipIT&connectship.com | 2019-12-12 | |
| Cristi Fati | cristi.fati&hpe.com | 2016-04-13 | |
| Daniel Becker | beckerd&ttc.com | ||
| Darin Smith | darin.smith&harman.com | 2017-02-16 | |
| Dave Jagoda | dj&opsware.com | 2006-06 | |
| David Ott | dott&qualcomm.com | 2010-10-15 | |
| David Sperling | dsperling&smithmicro.com | 2006-06 | |
| David Young | david.young&ccsseurope.co.uk | 2006-01 | |
| Dr. Anupam Bharali | paniana&gmail.com | 2006-06 | |
| Duk Loi | dloi&peerdirect.com | 2005-11 | |
| Francesco Rosi | frosi&orenburg.com | 2006-01 | |
| George Moromisato | gpm&neurohack.com | 2004-11 | |
| George Neville-Neil | gnn&neville-neil.com | 2014-07-29 | |
| Girish Bhat | gbhat&cranite.com | 2006-04 | |
| Graham Parsons | graham.parsons&reflective.com | 2005-08 | |
| Greg Sidebottom | gregside&home.com | ||
| Harman International Industries Inc. | darin.smith&harman.com | 2017-02-16 | |
| Helmut Giritzer | helmut.giritzer&o.roteskreuz.at | 2005-08 | |
| Hewlett Packard Enterprise | 2016-04-14 | ||
| Hing Wing To | wing.to&mircromuse.com | ||
| Holger Kruse | holger&rebol.net | ||
| Hubert Vijay Arokiasamy | Oracle Corp. | hubert.vijay.arokiasamy&oracle.com | 2014-10-28 |
| IESG | iesg&ietf.org | ||
| IETF Chair | IETF | chair&ietf.org | |
| Jauvane C. de Oliveira | jauvane&acm.org | ||
| Jean-Francois Rabasse | jfr&idps.org | 2003-07 | |
| Joseph T Savarese | joesa&nmwco.com | 2007-06 | |
| Marat Khalili | qm2k&yandex.ru | 2017-08-23 | |
| Marc Castelluccio | marc&xk22.com | 2022-08-16 | |
| Marcus Leufgen | leufgen&ipcas.de | 2002-05 | |
| Martin Bestmann | martin&poleposition-sw.com | 2005-08 | |
| Mike Gagle | mikeg&inin.com | 2006-05 | |
| Oracle Corp. | hubert.vijay.arokiasamy&oracle.com | 2014-10-28 | |
| Portnoy Boxman | portnoy_boxman&bmc.com | 2005-01 | |
| Robert Kinyon | rkinyon&connectship.com | 2019-12-12 | |
| Robert Moore | Tunstall Healthcare (UK) Ltd. | robert.moore&tunstall.com | 2014-12-10 |
| Roel Harbers | r.harbers&ict-control.com | 2005-08 | |
| Shingo Kimura | Shingo.Kimura&jp.sony.com | 2005-08 | |
| Takeo Sato | ts-iana&cloanto.net | 2010-04-30 | |
| Tim Wiegand | tim.wiegand&navisworks.com | 2003-02 | |
| Tristan Seifert | admin&247server.net | 2011-01-31 | |
| Tunstall Healthcare (UK) Ltd. | robert.moore&tunstall.com | 2014-12-10 | |
| Yogesh P. Gajjar | yogesh&cytel.com | ||
| Yutaka Ono | ono&saint.nm.fujitsu.co.jp |