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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| serverwsd2 | 5362 | udp | Microsoft Windows Server WSD2 Service | Erhan Soyer-Osman | Erhan Soyer-Osman | 2008-03-26 | |||||
| net-projection | 5363 | tcp | Windows Network Projection | Rob Williams | Rob Williams | 2009-02-17 | |||||
| net-projection | 5363 | udp | Windows Network Projection | Rob Williams | Rob Williams | 2009-02-17 | |||||
| kdnet | 5364 | udp | Microsoft Kernel Debugger | Microsoft Corporation | Joe Ballantyne | 2013-06-16 | |||||
| 5364 | tcp | Reserved | |||||||||
| 5365-5396 | Unassigned | ||||||||||
| systemics-sox | 5406 | tcp | Systemics Sox | Gary Howland | Gary Howland | ||||||
| systemics-sox | 5406 | udp | Systemics Sox | Gary Howland | Gary Howland | ||||||
| sns-gateway | 5416 | tcp | SNS Gateway | Mary Holstage | Mary Holstage | ||||||
| sns-gateway | 5416 | udp | SNS Gateway | Mary Holstage | Mary Holstage | ||||||
| devbasic | 5426 | tcp | DEVBASIC | Curtis Smith | Curtis Smith | ||||||
| devbasic | 5426 | udp | DEVBASIC | Curtis Smith | Curtis Smith | ||||||
| 5436 | tcp | Reserved | |||||||||
| pmip6-cntl | 5436 | udp | pmip6-cntl | RFC 5844 | |||||||
| pmip6-data | 5437 | udp | pmip6-data | RFC 5844 | |||||||
| 5446-5449 | Unassigned | ||||||||||
| apc-5456 | 5456 | tcp | APC 5456 | American Power Conversion | American Power Conversion | ||||||
| apc-5456 | 5456 | udp | APC 5456 | American Power Conversion | American Power Conversion | ||||||
| 5457-5460 | Unassigned | ||||||||||
| silkmeter | 5461 | tcp | SILKMETER | Klaus Fellner | Klaus Fellner | ||||||
| silkmeter | 5461 | udp | SILKMETER | Klaus Fellner | Klaus Fellner | ||||||
| ttl-publisher | 5462 | tcp | TTL Publisher | Peter Jacobs | Peter Jacobs | ||||||
| ttl-publisher | 5462 | udp | TTL Publisher | Peter Jacobs | Peter Jacobs | ||||||
| ttlpriceproxy | 5463 | tcp | TTL Price Proxy | Peter Jacobs | Peter Jacobs | ||||||
| ttlpriceproxy | 5463 | udp | TTL Price Proxy | Peter Jacobs | Peter Jacobs | ||||||
| quailnet | 5464 | tcp | Quail Networks Object Broker | Craig N. Bissell | Craig N. Bissell | 2006-04 | |||||
| quailnet | 5464 | udp | Quail Networks Object Broker | Craig N. Bissell | Craig N. Bissell | 2006-04 | |||||
| netops-broker | 5465 | tcp | NETOPS-BROKER | John R. Deuel | John R. Deuel | ||||||
| netops-broker | 5465 | udp | NETOPS-BROKER | John R. Deuel | John R. Deuel | ||||||
| 5466-5469 | Unassigned | ||||||||||
| 5476-5499 | Unassigned | ||||||||||
| amc | 5506 | tcp | Amcom Mobile Connect | Aaron Fracht-Monroe | Aaron Fracht-Monroe | 2010-06-03 | |||||
| amc | 5506 | udp | Amcom Mobile Connect | Aaron Fracht-Monroe | Aaron Fracht-Monroe | 2010-06-03 | |||||
| freeciv | 5556 | tcp | Freeciv gameplay | Reinier Post and Paul Zastoupil | Reinier Post and Paul Zastoupil | 2006-01 | Known Unauthorized Use on port 5556 | ||||
| freeciv | 5556 | udp | Freeciv gameplay | Reinier Post and Paul Zastoupil | Reinier Post and Paul Zastoupil | 2006-01 | Known Unauthorized Use on port 5556 | ||||
| 5558-5564 | Unassigned | ||||||||||
| dp-bura | 5565 | tcp | Data Protector BURA | Micro Focus | Shishir Misra | 2016-01-13 | 2019-10-04 | ||||
| 5565 | udp | Reserved | |||||||||
| westec-connect | 5566 | tcp | Westec Connect | Jon Bolen | Jon Bolen | 2009-03-18 | |||||
| 5566 | udp | Reserved | |||||||||
| dof-dps-mc-sec | 5567 | tcp | DOF Protocol Stack Multicast/Secure Transport | OpenDOF | Bryant Eastham | 2004-11 | 2015-04-23 | ||||
| dof-dps-mc-sec | 5567 | udp | DOF Protocol Stack Multicast/Secure Transport | OpenDOF | Bryant Eastham | 2004-11 | 2015-04-23 | ||||
| sdt | 5568 | tcp | Session Data Transport Multicast | Daniel W. Antonuk | Daniel W. Antonuk | 2006-05 | |||||
| sdt | 5568 | udp | Session Data Transport Multicast | Daniel W. Antonuk | Daniel W. Antonuk | 2006-05 | |||||
| rdmnet-ctrl | 5569 | tcp | PLASA E1.33, Remote Device Management (RDM) controller status notifications | PLASA | Simon Newton | 2012-06-01 | |||||
| rdmnet-device | 5569 | udp | PLASA E1.33, Remote Device Management (RDM) messages | PLASA | Simon Newton | 2012-06-01 | |||||
| 5576-5578 | Unassigned | ||||||||||
| att-mt-sms | 5586 | tcp | Planning to send mobile terminated SMS to the specific port so that the SMS is not visible to the client | AT&T | Dhillesh Sigilipelli | 2014-08-21 | |||||
| 5586 | udp | Reserved | |||||||||
| 5587-5596 | Unassigned | ||||||||||
| esmmanager | 5600 | tcp | Enterprise Security Manager | Kimberly Gibbs | Kimberly Gibbs | ||||||
| esmmanager | 5600 | udp | Enterprise Security Manager | Kimberly Gibbs | Kimberly Gibbs | ||||||
| esmagent | 5601 | tcp | Enterprise Security Agent | Kimberly Gibbs | Kimberly Gibbs | ||||||
| esmagent | 5601 | udp | Enterprise Security Agent | Kimberly Gibbs | Kimberly Gibbs | ||||||
| a1-msc | 5602 | tcp | A1-MSC | Mike Dolan | Mike Dolan | ||||||
| a1-msc | 5602 | udp | A1-MSC | Mike Dolan | Mike Dolan | ||||||
| a1-bs | 5603 | tcp | A1-BS | Mike Dolan | Mike Dolan | ||||||
| a1-bs | 5603 | udp | A1-BS | Mike Dolan | Mike Dolan | ||||||
| a3-sdunode | 5604 | tcp | A3-SDUNode | Mike Dolan | Mike Dolan | ||||||
| a3-sdunode | 5604 | udp | A3-SDUNode | Mike Dolan | Mike Dolan | ||||||
| a4-sdunode | 5605 | tcp | A4-SDUNode | Mike Dolan | Mike Dolan | ||||||
| a4-sdunode | 5605 | udp | A4-SDUNode | Mike Dolan | Mike Dolan | ||||||
| 5606-5617 | Unassigned | ||||||||||
| efr | 5618 | tcp | Fiscal Registering Protocol | efsta IT Services GmbH | Ernst Bewersdorff | 2013-08-13 | 2022-02-02 | ||||
| 5618 | udp | Reserved | |||||||||
| 5619-5626 | Unassigned | ||||||||||
| ninaf | 5627 | tcp | Node Initiated Network Association Forma | Thomas Scholl | Thomas Scholl | 2006-03 | |||||
| ninaf | 5627 | udp | Node Initiated Network Association Forma | Thomas Scholl | Thomas Scholl | 2006-03 | |||||
| htrust | 5628 | tcp | HTrust API | Karl Olafsson | Karl Olafsson | 2008-10-24 | |||||
| htrust | 5628 | udp | HTrust API | Karl Olafsson | Karl Olafsson | 2008-10-24 | |||||
| symantec-sfdb | 5629 | tcp | Symantec Storage Foundation for Database | Quang Thoi | Quang Thoi | 2006-11 | |||||
| symantec-sfdb | 5629 | udp | Symantec Storage Foundation for Database | Quang Thoi | Quang Thoi | 2006-11 | |||||
| precise-comm | 5630 | tcp | PreciseCommunication | Alon Tamir | Alon Tamir | 2006-04 | |||||
| precise-comm | 5630 | udp | PreciseCommunication | Alon Tamir | Alon Tamir | 2006-04 | |||||
| pcanywheredata | 5631 | tcp | pcANYWHEREdata | Jon Rosarky | Jon Rosarky | ||||||
| pcanywheredata | 5631 | udp | pcANYWHEREdata | Jon Rosarky | Jon Rosarky | ||||||
| pcanywherestat | 5632 | tcp | pcANYWHEREstat | Jon Rosarky | Jon Rosarky | ||||||
| pcanywherestat | 5632 | udp | pcANYWHEREstat | Jon Rosarky | Jon Rosarky | ||||||
| beorl | 5633 | tcp | BE Operations Request Listener | Chirag Desai | Chirag Desai | 2006-02 | |||||
| beorl | 5633 | udp | BE Operations Request Listener | Chirag Desai | Chirag Desai | 2006-02 | |||||
| xprtld | 5634 | tcp | SF Message Service | VR Satish | VR Satish | 2007-08-16 | |||||
| xprtld | 5634 | udp | SF Message Service | VR Satish | VR Satish | 2007-08-16 | |||||
| sfmsso | 5635 | tcp | SFM Authentication Subsystem | De-Chih Chien | De-Chih Chien | 2008-09-15 | |||||
| 5635 | udp | Reserved | |||||||||
| sfm-db-server | 5636 | tcp | SFMdb - SFM DB server | De-Chih Chien | De-Chih Chien | 2008-10-06 | |||||
| 5636 | udp | Reserved | |||||||||
| cssc | 5637 | tcp | Symantec CSSC | Amol P Tambe | Amol P Tambe | 2011-02-02 | |||||
| 5637 | udp | Reserved | |||||||||
| flcrs | 5638 | tcp | Symantec Fingerprint Lookup and Container Reference Service | Symantec Corp | Neel A. Bhatt | 2012-01-03 | |||||
| 5638 | udp | Reserved | |||||||||
| ics | 5639 | tcp | Symantec Integrity Checking Service | Symantec | Danzhou Liu | 2012-05-07 | |||||
| 5639 | udp | Reserved | |||||||||
| 5640-5645 | Unassigned | ||||||||||
| vfmobile | 5646 | tcp | Ventureforth Mobile | Ventureforth Inc. | Blakely Snyder | 2011-11-03 | |||||
| 5646 | udp | Reserved | |||||||||
| 5647-5665 | Unassigned | ||||||||||
| nrpe | 5666 | tcp | Nagios Remote Plugin Executor | Nagios Enterprises, LLC | Bryan Heden | 2017-09-06 | |||||
| 5666 | udp | Reserved | |||||||||
| 5667-5669 | Unassigned | ||||||||||
| filemq | 5670 | tcp | ZeroMQ file publish-subscribe protocol | Pieter Hintjens | Pieter Hintjens | 2012-11-01 | 2013-02-25 | ||||
| zre-disc | 5670 | udp | Local area discovery and messaging over ZeroMQ | Pieter Hintjens | Pieter Hintjens | 2012-12-17 |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Aaron Fracht-Monroe | afracht-monroe&amcomsoft.com | 2010-06-03 | |
| Alon Tamir | alon_tamir&symantec.com | 2006-04 | |
| American Power Conversion | ports&apcc.com | 2002-02 | |
| Amol P Tambe | amol_tambe&symantec.com | 2011-02-02 | |
| AT&T | ds978v&att.com | 2014-08-21 | |
| Blakely Snyder | Ventureforth Inc. | bsnyder&ventureforth.com | 2011-11-03 |
| Bryan Heden | bheden&nagios.com | 2017-09-06 | |
| Bryant Eastham | OenDOF | protocol&opendof.org | 2015-04-23 |
| Chirag Desai | Chirag_Desai&symantec.com | 2006-02 | |
| Craig N. Bissell | craig&quailnetworks.com | 2006-04 | |
| Curtis Smith | curtis.smith&vsin.com | ||
| Daniel W. Antonuk | dantonuk&etcconnect.com | 2006-05 | |
| Danzhou Liu | Symantec | Danzhou_Liu&symantec.com | 2012-05-07 |
| De-Chih Chien | de-chih_chien&symantec.com | 2008-10-06 | |
| Dhillesh Sigilipelli | AT&T | ds978v&att.com | 2014-08-21 |
| efsta IT Services GmbH | admin&efsta.eu | 2022-02-02 | |
| Erhan Soyer-Osman | erhansoµsoft.com | 2008-03-26 | |
| Ernst Bewersdorff | efsta IT Services GmbH | e.bewersdorff&efsta.eu | 2022-02-02 |
| Gary Howland | gary&systemics.com | ||
| Joe Ballantyne | Microsoft Corporation | joeballµsoft.com | 2013-06-16 |
| John R. Deuel | kink&netops.com | ||
| Jon Bolen | jon.bolen&westec.net | 2009-03-18 | |
| Jon Rosarky | JRosarky&symantec.com | ||
| Karl Olafsson | Karl.Olafsson&covariant-systems.com | 2008-10-24 | |
| Kimberly Gibbs | kimgib&ccgate-ut.axent.com | ||
| Klaus Fellner | webmaster&segue.com
kfellner&segue.com |
||
| Mary Holstage | holstege&firstfloor.com | ||
| Micro Focus | swpdl.dp.rdµfocus.com | 2019-09-30 | |
| Microsoft Corporation | joeballµsoft.com | 2013-06-16 | |
| Mike Dolan | MDolan&ihcmail.ih.lucent.com | ||
| Nagios Enterprises, LLC | techteam&nagios.com | 2017-09-06 | |
| Neel A. Bhatt | Symantec Corp | neel_bhatt&symantec.com | 2012-01-03 |
| OpenDOF | protocol&opendof.org | 2015-04-23 | |
| Peter Jacobs | pjacobs&tullib.com | ||
| Pieter Hintjens | ph&imatix.com | 2012-11-01 | |
| Pieter Hintjens | ph&imatix.com | 2012-12-17 | |
| PLASA | standards.na&plasa.org | 2012-06-01 | |
| Quang Thoi | quang_thoi&symantec.com | 2006-11 | |
| Reinier Post and Paul Zastoupil | freeciv&freeciv.org | 2006-01 | |
| Rob Williams | rob.williamsµsoft.com | 2009-02-17 | |
| Shishir Misra | shishir.misraµfocus.com | 2019-09-30 | |
| Simon Newton | simon&nomis52.net | 2012-06-01 | |
| Symantec Corp | neel_bhatt&symantec.com | 2012-01-03 | |
| Symantec | info&symantec.com | 2012-05-07 | |
| Thomas Scholl | tscholl&spf.is-is.ca | 2006-03 | |
| VR Satish | vr_satish&symantec.com | 2007-08-16 | |
| Ventureforth Inc. | support&ventureforth.com | 2011-11-03 |