Service Name and Transport Protocol Port Number Registry
Last Updated
- 2026-10-27
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| netxms-sync | 4702 | udp | NetXMS Server Synchronization | Victor Kirhenshtein | Victor Kirhenshtein | 2006-07 | |||||
| npqes-test | 4703 | tcp | Network Performance Quality Evaluation System Test Service | Zhengli | Zhengli | 2010-06-28 | |||||
| 4703 | udp | Reserved | |||||||||
| assuria-ins | 4704 | tcp | Assuria Insider | Nick Connor | Nick Connor | 2010-06-30 | |||||
| 4704 | udp | Reserved | |||||||||
| 4705-4710 | Unassigned | ||||||||||
| trinity-dist | 4711 | tcp | Trinity Trust Network Node Communication | P3KI GmbH | Gregor Jehle | 2017-01-12 | |||||
| trinity-dist | 4711 | udp | Trinity Trust Network Node Communication | P3KI GmbH | Gregor Jehle | 2017-01-12 | |||||
| trinity-dist | 4711 | sctp | Trinity Trust Network Node Communication | P3KI GmbH | Gregor Jehle | 2017-01-12 | |||||
| 4712-4724 | Unassigned | ||||||||||
| truckstar | 4725 | tcp | TruckStar Service | Brian Toothill | Brian Toothill | 2010-10-15 | |||||
| truckstar | 4725 | udp | TruckStar Service | Brian Toothill | Brian Toothill | 2010-10-15 | |||||
| 4726 | tcp | Reserved | |||||||||
| a26-fap-fgw | 4726 | udp | A26 (FAP-FGW) | David Ott | David Ott | 2010-10-15 | |||||
| fcis | 4727 | tcp | F-Link Client Information Service | ||||||||
| fcis-disc | 4727 | udp | F-Link Client Information Service Discovery | Makoto Zukawa | Makoto Zukawa | 2010-10-15 | |||||
| capmux | 4728 | tcp | CA Port Multiplexer | Nigel Groves | Nigel Groves | 2006-06 | |||||
| capmux | 4728 | udp | CA Port Multiplexer | Nigel Groves | Nigel Groves | 2006-06 | |||||
| 4729 | tcp | Reserved | |||||||||
| gsmtap | 4729 | udp | GSM Interface Tap | Harald Welte | Harald Welte | 2009-01-16 | |||||
| gearman | 4730 | tcp | Gearman Job Queue System | Eric Day | Eric Day | 2009-01-16 | |||||
| gearman | 4730 | udp | Gearman Job Queue System | Eric Day | Eric Day | 2009-01-16 | |||||
| remcap | 4731 | tcp | Remote Capture Protocol | Marc Donner | Marc Donner | 2009-01-16 | |||||
| 4731 | udp | Reserved | |||||||||
| 4732 | tcp | Reserved | |||||||||
| ohmtrigger | 4732 | udp | OHM server trigger | Franck Lefevre | Franck Lefevre | 2009-11-18 | |||||
| resorcs | 4733 | tcp | RES Orchestration Catalog Services | Bob Janssen | Bob Janssen | 2009-11-18 | |||||
| 4733 | udp | Reserved | |||||||||
| 4734-4736 | Unassigned | ||||||||||
| ipdr-sp | 4737 | tcp | IPDR/SP | Ken Sarno | Ken Sarno | 2005-08 | |||||
| ipdr-sp | 4737 | udp | IPDR/SP | Ken Sarno | Ken Sarno | 2005-08 | |||||
| solera-lpn | 4738 | tcp | SoleraTec Locator | Mark Armstrong | Mark Armstrong | 2005-12 | |||||
| solera-lpn | 4738 | udp | SoleraTec Locator | Mark Armstrong | Mark Armstrong | 2005-12 | |||||
| ipfix | 4739 | tcp | IP Flow Info Export | Nevil Brownlee | Nevil Brownlee | 2005-08 | |||||
| ipfix | 4739 | udp | IP Flow Info Export | Nevil Brownlee | Nevil Brownlee | 2005-08 | |||||
| ipfix | 4739 | sctp | IP Flow Info Export | Nevil Brownlee | Nevil Brownlee | 2006-01 | |||||
| ipfixs | 4740 | tcp | ipfix protocol over TLS | Nevil Brownlee | Nevil Brownlee | 2006-10 | |||||
| ipfixs | 4740 | sctp | ipfix protocol over DTLS | Nevil Brownlee | Nevil Brownlee | 2006-10 | |||||
| ipfixs | 4740 | udp | ipfix protocol over DTLS | Nevil Brownlee | Nevil Brownlee | 2006-10 | |||||
| lumimgrd | 4741 | tcp | Luminizer Manager | George Hwa | George Hwa | 2007-03 | |||||
| lumimgrd | 4741 | udp | Luminizer Manager | George Hwa | George Hwa | 2007-03 | |||||
| sicct | 4742 | tcp | SICCT | ||||||||
| sicct-sdp | 4742 | udp | SICCT Service Discovery Protocol | TeleTrusT Deutschland e.V. | TeleTrusT Deutschland e.V. | 2006-04 | |||||
| openhpid | 4743 | tcp | openhpi HPI service | Thomas Kanngieser | Thomas Kanngieser | 2006-01 | |||||
| openhpid | 4743 | udp | openhpi HPI service | Thomas Kanngieser | Thomas Kanngieser | 2006-01 | |||||
| ifsp | 4744 | tcp | Internet File Synchronization Protocol | Alex White | Alex White | 2007-09-12 | |||||
| ifsp | 4744 | udp | Internet File Synchronization Protocol | Alex White | Alex White | 2007-09-12 | |||||
| fmp | 4745 | tcp | Funambol Mobile Push | Andrea Gazzaniga | Andrea Gazzaniga | 2007-01 | |||||
| fmp | 4745 | udp | Funambol Mobile Push | Andrea Gazzaniga | Andrea Gazzaniga | 2007-01 | |||||
| 4746 | tcp | Reserved | |||||||||
| intelliadm-disc | 4746 | udp | IntelliAdmin Discovery | IntelliAdmin, LLC | Steve Wiseman | 2016-11-18 | |||||
| buschtrommel | 4747 | udp | peer-to-peer file exchange protocol | Tobias Sturm | Tobias Sturm | 2013-01-14 | |||||
| 4747 | tcp | Reserved | |||||||||
| 4748-4748 | Unassigned | ||||||||||
| profilemac | 4749 | tcp | Profile for Mac | David Sinclair | David Sinclair | 2006-05 | |||||
| profilemac | 4749 | udp | Profile for Mac | David Sinclair | David Sinclair | 2006-05 | |||||
| ssad | 4750 | tcp | Simple Service Auto Discovery | Dr Horst Herb | Dr Horst Herb | 2005-12 | |||||
| ssad | 4750 | udp | Simple Service Auto Discovery | Dr Horst Herb | Dr Horst Herb | 2005-12 | |||||
| spocp | 4751 | tcp | Simple Policy Control Protocol | Roland Hedberg | Roland Hedberg | 2005-08 | |||||
| spocp | 4751 | udp | Simple Policy Control Protocol | Roland Hedberg | Roland Hedberg | 2005-08 | |||||
| snap | 4752 | tcp | Simple Network Audio Protocol | Dameon Wagner | Dameon Wagner | 2002-02 | |||||
| snap | 4752 | udp | Simple Network Audio Protocol | Dameon Wagner | Dameon Wagner | 2002-02 | |||||
| simon | 4753 | tcp | Simple Invocation of Methods Over Network (SIMON) | Alexander Christian | Alexander Christian | 2012-04-19 | |||||
| simon-disc | 4753 | udp | Simple Invocation of Methods Over Network (SIMON) Discovery | Alexander Christian | Alexander Christian | 2012-04-19 | |||||
| 4754 | tcp | Reserved | |||||||||
| gre-in-udp | 4754 | udp | GRE-in-UDP Encapsulation | IESG | IETF Chair | 2016-10-05 | RFC 8086 | ||||
| 4755 | tcp | Reserved | |||||||||
| gre-udp-dtls | 4755 | udp | GRE-in-UDP Encapsulation with DTLS | IESG | IETF Chair | 2016-10-05 | RFC 8086 | ||||
| RDCenter | 4756 | tcp | Reticle Decision Center | KLA Tencor/RAPID | George Hwa | 2016-10-17 | |||||
| 4756 | udp | Reserved | |||||||||
| 4757-4773 | Unassigned | ||||||||||
| converge | 4774 | tcp | Converge RPC | Asteris, LLC | Steven Borrelli | 2016-09-16 | |||||
| 4774 | udp | Reserved | |||||||||
| 4775-4783 | Unassigned | ||||||||||
| bfd-multi-ctl | 4784 | tcp | BFD Multihop Control | Dave Katz; Dave Ward | Dave Katz; Dave Ward | 2006-02 | |||||
| bfd-multi-ctl | 4784 | udp | BFD Multihop Control | Dave Katz; Dave Ward | Dave Katz; Dave Ward | 2006-02 | |||||
| 4785 | tcp | Reserved | |||||||||
| cncp | 4785 | udp | Cisco Nexus Control Protocol | Joseph Swaminathan | Joseph Swaminathan | 2009-04-01 | |||||
| smart-install | 4786 | tcp | Smart Install Service | Amit Nigam | Amit Nigam | 2009-08-24 | |||||
| 4786 | udp | Reserved | |||||||||
| sia-ctrl-plane | 4787 | tcp | Service Insertion Architecture (SIA) Control-Plane | Shree Murthy | Shree Murthy | 2009-10-29 | |||||
| 4787 | udp | Reserved | |||||||||
| xmcp | 4788 | tcp | eXtensible Messaging Client Protocol | Cisco | Glenn Matthews | 2011-05-23 | 2011-10-25 | Defined TXT keys: txtvers=1 (as described in the draft) protovers=<comma-separated list of major/minor versions supported> (examples: "protovers=1.0" "protovers=1.1,2.0" | |||
| 4788 | udp | Reserved | |||||||||
| vxlan | 4789 | udp | Virtual eXtensible Local Area Network (VXLAN) | Lawrence Kreeger | Lawrence Kreeger | 2013-04-19 | 2014-06-17 | RFC 7348 | |||
| 4789 | tcp | Reserved | |||||||||
| vxlan-gpe | 4790 | udp | Generic Protocol Extension for Virtual eXtensible Local Area Network (VXLAN) | Lawrence Kreeger | Lawrence Kreeger | 2014-08-26 | |||||
| 4790 | tcp | Reserved | |||||||||
| roce | 4791 | udp | IP Routable RocE | InfiniBand Trade Association (IBTA) | Diego Crupnicoff (IBTA TWG Chair) | 2014-10-17 | |||||
| 4791 | tcp | Reserved | |||||||||
| unified-bus | 4792 | tcp | IP Routable Unified Bus | Huawei | Wei Pan | 2022-07-08 | 2023-04-10 | ||||
| unified-bus | 4792 | udp | IP Routable Unified Bus | Huawei | Wei Pan | 2022-07-08 | 2023-04-10 | ||||
| 4793 | tcp | Reserved | |||||||||
| uet | 4793 | udp | Ultra Ethernet Transport | Ultra Ethernet Consortium | Vivek Kashyap | 2025-06-16 | |||||
| 4794 | tcp | Reserved | |||||||||
| veroce | 4794 | udp | veRoCE Transport Protocol | ByteDance | Dai Huichen | 2026-03-06 | |||||
| 4795-4799 | Unassigned | ||||||||||
| wfc | 4847 | tcp | Web Fresh Communication | Jonathan Bastnagel | Jonathan Bastnagel | 2007-09-17 | |||||
| wfc | 4847 | udp | Web Fresh Communication | Jonathan Bastnagel | Jonathan Bastnagel | 2007-09-17 | |||||
| 5047 | tcp | Reserved | |||||||||
| iscape | 5047 | udp | iSCAPE Data Broadcasting | Roland van der Veen | Roland van der Veen | 2010-06-17 |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Alex White | alex&intralan.co.uk | 2007-09-12 | |
| Alexander Christian | alexander.christian&root1.de | 2012-04-19 | |
| Amit Nigam | amnigam&cisco.com | 2009-08-24 | |
| Andrea Gazzaniga | gazzaniga&funambol.com | 2007-01 | |
| Asteris, LLC | info&aster.is | 2016-09-16 | |
| Bob Janssen | b.janssen&ressoftware.com | 2009-11-18 | |
| Brian Toothill | brian.toothill&touchstar.co.uk | 2010-10-15 | |
| ByteDance | daihuichen&bytedance.com | 2026-03-06 | |
| Cisco | glenn.matthews&cisco.com | 2011-10-25 | |
| Dai Huichen | daihuichen&bytedance.com | 2026-03-06 | |
| Dameon Wagner | d.wagner&freemail.absa.co.za | 2002-02 | |
| Dave Katz | dkatz&juniper.net | 2006-02 | |
| Dave Ward | dward&cisco.com | 2006-02 | |
| David Ott | dott&qualcomm.com | 2010-10-15 | |
| David Sinclair | dev&profilemac.com | 2006-05 | |
| Diego Crupnicoff (IBTA TWG Chair) | diego&mellanox.com | 2014-10-17 | |
| Dr Horst Herb | horst&dorrigomedical.com | 2005-12 | |
| Eric Day | eday&oddments.org | 2009-01-16 | |
| Franck Lefevre | franck.lefevre&digitalairways.com | 2009-11-18 | |
| George Hwa | george.hwa&kla-tencor.com | 2016-10-17 | |
| Glenn Matthews | glenn.matthews&cisco.com | 2011-05-23 | |
| Gregor Jehle | hadez&p3ki.com | 2017-01-12 | |
| Harald Welte | laforge&gnumonks.org | 2009-01-16 | |
| Huawei | tarzan.pan&huawei.com | 2023-04-10 | |
| IESG | iesg&ietf.org | ||
| IETF Chair | IETF | chair&ietf.org | |
| InfiniBand Trade Association (IBTA) | administration&infinibandta.org | 2014-10-17 | |
| IntelliAdmin, LLC | support&intelliadmin.com | 2016-11-18 | |
| Jonathan Bastnagel | jonthebagel&gmail.com | 2007-09-17 | |
| Joseph Swaminathan | jswamina&cisco.com | 2009-04-01 | |
| Ken Sarno | kensarno&insightbb.com | 2005-08 | |
| KLA Tencor/RAPID | george.hwa&kla-tencor.com | 2016-10-17 | |
| Lawrence Kreeger | kreeger&cisco.com | 2013-04-19 | |
| Makoto Zukawa | zukawa&jp.fujitsu.com | 2010-10-15 | |
| Marc Donner | mail&poweraudio.de | 2009-01-16 | |
| Mark Armstrong | Mark.Armstrong&soleratec.com | 2005-12 | |
| Nevil Brownlee | n.brownlee&auckland.ac.nz | 2006-10 | |
| Nick Connor | nickc&assuria.com | 2010-06-30 | |
| Nigel Groves | nigel.groves&ca.com | 2006-06 | |
| P3KI GmbH | iana&p3ki.com | 2017-01-12 | |
| Roland Hedberg | roland&catalogix.se | 2005-08 | |
| Roland van der Veen | rvdveen&aqualectra.nl | 2010-06-17 | |
| Shree Murthy | shree&cisco.com | 2009-10-29 | |
| Steve Wiseman | steve.wiseman&intelliadmin.com | 2016-11-18 | |
| Steven Borrelli | steve&aster.is | 2016-09-16 | |
| TeleTrusT Deutschland e.V. | info&teletrust.de | 2006-04 | |
| Thomas Kanngieser | thomas.kanngieser&arcor.de | 2006-01 | |
| Tobias Sturm | tobias.sturm&student.kit.edu | 2013-01-14 | |
| Ultra Ethernet Consortium | vivek.kashyap&intel.com | 2025-06-16 | |
| Victor Kirhenshtein | victor&opticom.lv | 2006-07 | |
| Vivek Kashyap | vivek.kashyap&intel.com | 2025-06-16 | |
| Wei Pan | Huawei | tarzan.pan&huawei.com | 2023-04-10 |
| Zhengli | std&iwncomm.com | 2010-06-28 |