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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| toad | 2669 | tcp | TOAD | Michael Marking | Michael Marking | ||||||
| toad | 2669 | udp | TOAD | Michael Marking | Michael Marking | ||||||
| hp-nnm-data | 2690 | tcp | HP NNM Embedded Database | Chris Das | Chris Das | ||||||
| hp-nnm-data | 2690 | udp | HP NNM Embedded Database | Chris Das | Chris Das | ||||||
| itinternet | 2691 | tcp | ITInternet ISM Server | Ron Ehli | Ron Ehli | ||||||
| itinternet | 2691 | udp | ITInternet ISM Server | Ron Ehli | Ron Ehli | ||||||
| admins-lms | 2692 | tcp | Admins LMS | Dagfinn Saether | Dagfinn Saether | ||||||
| admins-lms | 2692 | udp | Admins LMS | Dagfinn Saether | Dagfinn Saether | ||||||
| 2693 | tcp | Unassigned | (Removed 2004-2-6) | ||||||||
| 2693 | udp | Unassigned | (Removed 2004-2-6) | ||||||||
| pwrsevent | 2694 | tcp | pwrsevent | Yoshinobu Nakamura | Yoshinobu Nakamura | ||||||
| pwrsevent | 2694 | udp | pwrsevent | Yoshinobu Nakamura | Yoshinobu Nakamura | ||||||
| vspread | 2695 | tcp | VSPREAD | Sumitake kobayashi | Sumitake kobayashi | ||||||
| vspread | 2695 | udp | VSPREAD | Sumitake kobayashi | Sumitake kobayashi | ||||||
| unifyadmin | 2696 | tcp | Unify Admin | Daegis, Inc. | Chris Anderson | 2012-07-31 | |||||
| unifyadmin | 2696 | udp | Unify Admin | Daegis, Inc. | Chris Anderson | 2012-07-31 | |||||
| oce-snmp-trap | 2697 | tcp | Oce SNMP Trap Port | Peter Teeuwen | Peter Teeuwen | ||||||
| oce-snmp-trap | 2697 | udp | Oce SNMP Trap Port | Peter Teeuwen | Peter Teeuwen | ||||||
| mck-ivpip | 2698 | tcp | MCK-IVPIP | Robert Vincent | Robert Vincent | ||||||
| mck-ivpip | 2698 | udp | MCK-IVPIP | Robert Vincent | Robert Vincent | ||||||
| csoft-plusclnt | 2699 | tcp | Csoft Plus Client | Nedelcho Stanev | Nedelcho Stanev | ||||||
| csoft-plusclnt | 2699 | udp | Csoft Plus Client | Nedelcho Stanev | Nedelcho Stanev | ||||||
| exce | 2769 | tcp | eXcE | Norm Freedman | Norm Freedman | ||||||
| exce | 2769 | udp | eXcE | Norm Freedman | Norm Freedman | ||||||
| icslap | 2869 | tcp | ICSLAP | Richard Lamb | Richard Lamb | ||||||
| icslap | 2869 | udp | ICSLAP | Richard Lamb | Richard Lamb | ||||||
| essp | 2969 | tcp | ESSP | Hitoshi Ishida | Hitoshi Ishida | ||||||
| essp | 2969 | udp | ESSP | Hitoshi Ishida | Hitoshi Ishida | ||||||
| ls3 | 3069 | tcp | ls3 | Jim Thompson | Jim Thompson | ||||||
| ls3 | 3069 | udp | ls3 | Jim Thompson | Jim Thompson | ||||||
| serverview-as | 3169 | tcp | SERVERVIEW-AS | ||||||||
| serverview-as | 3169 | udp | SERVERVIEW-AS | ||||||||
| msft-gc-ssl | 3269 | tcp | Microsoft Global Catalog with LDAP/SSL | Asaf Kashi | Asaf Kashi | ||||||
| msft-gc-ssl | 3269 | udp | Microsoft Global Catalog with LDAP/SSL | Asaf Kashi | Asaf Kashi | ||||||
| pluribus | 3469 | tcp | Pluribus | Mark Miller | Mark Miller | ||||||
| pluribus | 3469 | udp | Pluribus | Mark Miller | Mark Miller | ||||||
| mbg-ctrl | 3569 | tcp | Meinberg Control Service | Meinberg Funkuhren GmbH & Co. KG | Meinberg IANA Registrations | 2002-08 | 2019-04-23 | ||||
| mbg-ctrl | 3569 | udp | Meinberg Control Service | Meinberg Funkuhren GmbH & Co. KG | Meinberg IANA Registrations | 2002-08 | 2019-04-23 | ||||
| casanswmgmt | 3669 | tcp | CA SAN Switch Management | Emre Tunar | Emre Tunar | 2003-01 | |||||
| casanswmgmt | 3669 | udp | CA SAN Switch Management | Emre Tunar | Emre Tunar | 2003-01 | |||||
| svn | 3690 | tcp | Subversion | Greg Hudson | Greg Hudson | 2003-01 | |||||
| svn | 3690 | udp | Subversion | Greg Hudson | Greg Hudson | 2003-01 | |||||
| magaya-network | 3691 | tcp | Magaya Network Port | Jesus David Rodriguez | Jesus David Rodriguez | 2003-02 | |||||
| magaya-network | 3691 | udp | Magaya Network Port | Jesus David Rodriguez | Jesus David Rodriguez | 2003-02 | |||||
| intelsync | 3692 | tcp | Brimstone IntelSync | Davey Taylor | Davey Taylor | 2003-02 | |||||
| intelsync | 3692 | udp | Brimstone IntelSync | Davey Taylor | Davey Taylor | 2003-02 | |||||
| easl | 3693 | tcp | Emergency Automatic Structure Lockdown System | Mele Associates | Greg Hansen; Randy Yates | 2014-11-26 | This port was previously removed on 2007-04-05. | ||||
| 3693 | udp | Reserved | 2014-11-26 | This port was previously removed on 2007-04-05. | |||||||
| 3694 | Unassigned | 2007-04-05 | |||||||||
| bmc-data-coll | 3695 | tcp | BMC Data Collection | Portnoy Boxman | Portnoy Boxman | 2003-02 | |||||
| bmc-data-coll | 3695 | udp | BMC Data Collection | Portnoy Boxman | Portnoy Boxman | 2003-02 | |||||
| telnetcpcd | 3696 | tcp | Telnet Com Port Control | Thomas J. Pinkl | Thomas J. Pinkl | 2003-02 | |||||
| telnetcpcd | 3696 | udp | Telnet Com Port Control | Thomas J. Pinkl | Thomas J. Pinkl | 2003-02 | |||||
| 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 | |||||
| sagectlpanel | 3698 | tcp | SAGECTLPANEL | Mark Gamble | Mark Gamble | 2003-02 | |||||
| sagectlpanel | 3698 | udp | SAGECTLPANEL | Mark Gamble | Mark Gamble | 2003-02 | |||||
| kpn-icw | 3699 | tcp | Internet Call Waiting | B. J. Kortekaas | B. J. Kortekaas | 2003-02 | |||||
| kpn-icw | 3699 | udp | Internet Call Waiting | B. J. Kortekaas | B. J. Kortekaas | 2003-02 | |||||
| haipe-otnk | 3769 | tcp | HAIPE Network Keying | Mike Irani | Mike Irani | 2003-06 | |||||
| haipe-otnk | 3769 | udp | HAIPE Network Keying | Mike Irani | Mike Irani | 2003-06 | |||||
| ovsam-mgmt | 3869 | tcp | hp OVSAM MgmtServer Disco | Mike Pontillo | Mike Pontillo | 2003-08 | |||||
| ovsam-mgmt | 3869 | udp | hp OVSAM MgmtServer Disco | Mike Pontillo | Mike Pontillo | 2003-08 | |||||
| landmarks | 3969 | tcp | Landmark Messages | Petri Rauhala | Petri Rauhala | 2005-08 | |||||
| landmarks | 3969 | udp | Landmark Messages | Petri Rauhala | Petri Rauhala | 2005-08 | |||||
| minger | 4069 | tcp | Minger Email Address Validation Service | Arvel Hathcock | Arvel Hathcock | 2007-03 | |||||
| minger | 4069 | udp | Minger Email Address Validation Service | Arvel Hathcock | Arvel Hathcock | 2007-03 | |||||
| iadt | 4169 | tcp | Automation Drive Interface Transport | Paul Suhler | Paul Suhler | 2008-02-15 | |||||
| iadt-disc | 4169 | udp | Internet ADT Discovery Protocol | Paul A. Suhler | Paul A. Suhler | 2009-02-06 | |||||
| epmd | 4369 | tcp | Erlang Port Mapper Daemon | Erlang/OTP support | Erlang/OTP support | ||||||
| epmd | 4369 | udp | Erlang Port Mapper Daemon | Erlang/OTP support | Erlang/OTP support | ||||||
| iax | 4569 | tcp | Inter-Asterisk eXchange | Benjamin Kowarsch | Benjamin Kowarsch | RFC 5456 | Defined TXT keys: auth plaintext | md5 | rsakeys userid alphanumeric, additionally '_', '+', '-' secret any printable ASCII characters domain any DNS domain name or IP address extension alphanumeric, additionally '*', '#', '_', '+', '-' context alphanumeric, additionally '_', '+', '-' trunk yes | no | 0 | 1 welcome alphanumeric, additionally '*', '#', '_', '+', '-' voicemail alphanumeric, additionally '*', '#', '_', '+', '-' reception alphanumeric, additionally '*', '#', '_', '+', '-' echotest alphanumeric, additionally '*', '#', '_', '+', '-' ivrtest alphanumeric, additionally '*', '#', '_', '+', '-' All of these TXT record keys are optional, they may be omitted. Further keys may be added in the future. |
||||
| iax | 4569 | udp | Inter-Asterisk eXchange | Benjamin Kowarsch | Benjamin Kowarsch | RFC 5456 | Defined TXT keys: auth plaintext | md5 | rsakeys userid alphanumeric, additionally '_', '+', '-' secret any printable ASCII characters domain any DNS domain name or IP address extension alphanumeric, additionally '*', '#', '_', '+', '-' context alphanumeric, additionally '_', '+', '-' trunk yes | no | 0 | 1 welcome alphanumeric, additionally '*', '#', '_', '+', '-' voicemail alphanumeric, additionally '*', '#', '_', '+', '-' reception alphanumeric, additionally '*', '#', '_', '+', '-' echotest alphanumeric, additionally '*', '#', '_', '+', '-' ivrtest alphanumeric, additionally '*', '#', '_', '+', '-' All of these TXT record keys are optional, they may be omitted. Further keys may be added in the future. |
||||
| eportcommdata | 4669 | tcp | E-Port Data Service | Robert Shaffer | Robert Shaffer | 2006-02 | |||||
| eportcommdata | 4669 | udp | E-Port Data Service | Robert Shaffer | Robert Shaffer | 2006-02 | |||||
| prelude | 4690 | tcp | Prelude IDS message proto | Yoann Vandoorselaere | Yoann Vandoorselaere | 2005-08 | |||||
| prelude | 4690 | udp | Prelude IDS message proto | Yoann Vandoorselaere | Yoann Vandoorselaere | 2005-08 | |||||
| mtn | 4691 | tcp | monotone Netsync Protocol | Thomas Keller | Thomas Keller | 2010-12-22 | |||||
| mtn | 4691 | udp | monotone Netsync Protocol | Thomas Keller | Thomas Keller | 2010-12-22 | |||||
| conspiracy | 4692 | tcp | Conspiracy messaging | Jens Edlund | Jens Edlund | 2005-08 | |||||
| conspiracy | 4692 | udp | Conspiracy messaging | Jens Edlund | Jens Edlund | 2005-08 | |||||
| 4693-4699 | Unassigned | ||||||||||
| phrelaydbg | 4869 | tcp | Photon Relay Debug | Michael Hunter | Michael Hunter | ||||||
| phrelaydbg | 4869 | udp | Photon Relay Debug | Michael Hunter | Michael Hunter | ||||||
| ccss-qmm | 4969 | tcp | CCSS QMessageMonitor | ||||||||
| ccss-qmm | 4969 | udp | CCSS QMessageMonitor | ||||||||
| i-net-2000-npr | 5069 | tcp | I/Net 2000-NPR | Chris Megede | Chris Megede | ||||||
| i-net-2000-npr | 5069 | udp | I/Net 2000-NPR | Chris Megede | Chris Megede | ||||||
| 5169-5171 | Unassigned | ||||||||||
| xmpp-server | 5269 | tcp | XMPP Server Connection | RFC 6120 | |||||||
| 5269 | udp | Reserved | |||||||||
| 5466-5469 | Unassigned | ||||||||||
| 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 | |||||
| 5667-5669 | Unassigned | ||||||||||
| 5690-5692 | Unassigned | ||||||||||
| rbsystem | 5693 | tcp | Robert Bosch Data Transfer | Syntegon Technology GmbH | Klaus Warth | 2011-08-01 | 2020-02-04 | ||||
| 5693 | udp | Reserved | |||||||||
| 5694-5695 | Unassigned | ||||||||||
| kmip | 5696 | tcp | Key Management Interoperability Protocol | OASIS KMIP Technical Committee | Robin Cover | 2011-07-25 | |||||
| 5696 | udp | Reserved |
Contact Information
| Name | Organization | Contact URI | Last Updated |
|---|---|---|---|
| Arvel Hathcock | arvel&altn.com | 2007-03 | |
| Asaf Kashi | asafkµsoft.com | ||
| B. J. Kortekaas | b.j.kortekaas&kpn.com | 2003-02 | |
| Benjamin Kowarsch | benjamin&sunrise-tel.com | 2004-11 | |
| Chris Anderson | Daegis, Inc. | ianaportmaster&daegis.com | 2012-07-31 |
| Chris Das | cdas&cnd.hp.com | ||
| Chris Megede | chris.megede&tac.com | ||
| Daegis, Inc. | ianaportmaster&daegis.com | 2012-07-31 | |
| Dagfinn Saether | Dagfinn&admins.com | ||
| Davey Taylor | davey.taylor&brimstone.net | 2003-02 | |
| Emre Tunar | emre.tunar&ca.com | 2004-11 | |
| Erlang/OTP support | epmd&erix.ericsson.se | 2004-12 | |
| Greg Hansen | Mele Associates | greg.hansen&meleassociates.com | 2014-11-26 |
| Greg Hudson | ghudson&mit.edu | 2023-11-17 | |
| Hitoshi Ishida | ishida.hitoshi&exc.epson.co.jp | ||
| Jens Edlund | edlund&speech.kth.se | 2005-08 | |
| Jesus David Rodriguez | jesusdavid&magaya.com | 2003-02 | |
| Jim Thompson | jim.thompson&powerware.com | ||
| Klaus Warth | Syntegon Technology GmbH | Klaus.Warth&Syntegon.com | 2020-02-04 |
| Mark Gamble | mark.gamble&sage.com | 2003-02 | |
| Mark Miller | markm&caplet.com | ||
| Meinberg Funkuhren GmbH & Co. KG | martin.burnicki&meinberg.de | 2019-04-23 | |
| Meinberg IANA Registrations | iana-admin&meinberg.de | 2019-04-23 | |
| Mele Associates | easl&meleassociates.com | 2014-11-26 | |
| Michael Hunter | mphunter&qnx.com | ||
| Michael Marking | marking&tatanka.com | ||
| Mike Irani | irani&spawar.navy.mil | 2003-06 | |
| Mike Pontillo | pontillo&hp.com | 2003-08 | |
| Nedelcho Stanev | nstanev&csoft.bg | ||
| Norm Freedman | normfree&san.rr.com | 2003-08 | |
| OASIS KMIP Technical Committee | robin&oasis-open.org | 2011-07-25 | |
| Paul A. Suhler | paul.suhler&quantum.com | 2009-02-06 | |
| Paul Suhler | paul.suhler&quantum.com | 2008-02-15 | |
| Peter Teeuwen | ptee&oce.nl | ||
| Petri Rauhala | petri.rauhala&nokia.com | 2005-08 | |
| PLASA | standards.na&plasa.org | 2012-06-01 | |
| Portnoy Boxman | portnoy_boxman&bmc.com | 2005-01 | |
| Randy Yates | Digital Signal Labs | yates&digitalsignallabs.com | 2014-11-26 |
| Richard Lamb | rlambµsoft.com | ||
| Robert Shaffer | bob.shaffer&micmod.com | 2006-02 | |
| Robert Vincent | bert&mck.com | ||
| Robin Cover | OASIS KMIP Technical Committee | robin&oasis-open.org | 2011-07-25 |
| Ron Ehli | ron&itinternet.net | ||
| Simon Newton | simon&nomis52.net | 2012-06-01 | |
| Sumitake kobayashi | kobayashi&np.lps.cs.fujitsu.co.jp | ||
| Syntegon Technology GmbH | Klaus.Warth&syntegon.com | 2020-02-04 | |
| Thomas J. Pinkl | tom&pinkl.com | 2003-02 | |
| Thomas Keller | me&thomaskeller.biz | 2010-12-22 | |
| Tim Wiegand | tim.wiegand&navisworks.com | 2003-02 | |
| Yoann Vandoorselaere | yoann&prelude-ids.org | 2005-08 | |
| Yoshinobu Nakamura | nakamura&np.lps.cs.fujitsu.co.jp |