Service Name and Transport Protocol Port Number Registry

Last Updated
2018-12-03
Expert(s)
TCP/UDP: Joe Touch; Eliot Lear, Allison Mankin, Markku Kojo, Kumiko Ono, Martin Stiemerling, 
Lars Eggert, Alexey Melnikov, Wes Eddy, Alexander Zimmermann, Brian Trammell, and Jana Iyengar
SCTP: Allison Mankin and Michael Tuexen
DCCP: Eddie Kohler and Yoshifumi Nishida
Reference
[RFC6335]
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 process, as
documented in [RFC6335].

Port numbers are assigned in various ways, based on three ranges: System
Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private
Ports (49152-65535); the difference uses of these ranges is described in
[RFC6335]. According to Section 8.1.2 of [RFC6335], System Ports are 
assigned by the "IETF Review" or "IESG Approval" procedures described in 
[RFC8126]. User Ports are assigned by IANA using the "IETF Review" process, 
the "IESG Approval" process, or the "Expert Review" process, as per 
[RFC6335]. Dynamic Ports are not assigned.

The registration procedures for service names and port numbers are
described in [RFC6335].

Assigned ports both System and User ports SHOULD NOT be used without
or prior to IANA registration.

************************************************************************
* PLEASE NOTE THE FOLLOWING:                                           *
*                                                                      *
* 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.                                                   *
************************************************************************
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Service Name Port Number Transport Protocol Description Assignee Contact Registration Date Modification Date Reference Service Code Known Unauthorized Uses Assignment Notes
sco-websrvrmg3 598 udp SCO Web Server Manager 3 [Simon_Baldwin] [Simon_Baldwin]
acp 599 tcp Aeolon Core Protocol [Michael_Alyn_Miller] [Michael_Alyn_Miller]
acp 599 udp Aeolon Core Protocol [Michael_Alyn_Miller] [Michael_Alyn_Miller]
ipcserver 600 tcp Sun IPC server [Bill_Schiefelbein] [Bill_Schiefelbein]
ipcserver 600 udp Sun IPC server [Bill_Schiefelbein] [Bill_Schiefelbein]
syslog-conn 601 tcp Reliable Syslog Service [RFC3195]
syslog-conn 601 udp Reliable Syslog Service [RFC3195]
xmlrpc-beep 602 tcp XML-RPC over BEEP [RFC3529]
xmlrpc-beep 602 udp XML-RPC over BEEP [RFC3529]
idxp 603 tcp IDXP [RFC4767]
idxp 603 udp IDXP [RFC4767]
tunnel 604 tcp TUNNEL [RFC3620]
tunnel 604 udp TUNNEL [RFC3620]
soap-beep 605 tcp SOAP over BEEP [RFC4227]
soap-beep 605 udp SOAP over BEEP [RFC4227]
urm 606 tcp Cray Unified Resource Manager
urm 606 udp Cray Unified Resource Manager
nqs 607 tcp nqs [Bill_Schiefelbein] [Bill_Schiefelbein]
nqs 607 udp nqs [Bill_Schiefelbein] [Bill_Schiefelbein]
sift-uft 608 tcp Sender-Initiated/Unsolicited File Transfer [Rick_Troth] [Rick_Troth]
sift-uft 608 udp Sender-Initiated/Unsolicited File Transfer [Rick_Troth] [Rick_Troth]
npmp-trap 609 tcp npmp-trap
npmp-trap 609 udp npmp-trap
npmp-local 610 tcp npmp-local
npmp-local 610 udp npmp-local
npmp-gui 611 tcp npmp-gui [John_Barnes] [John_Barnes]
npmp-gui 611 udp npmp-gui [John_Barnes] [John_Barnes]
hmmp-ind 612 tcp HMMP Indication
hmmp-ind 612 udp HMMP Indication
hmmp-op 613 tcp HMMP Operation [Andrew_Sinclair] [Andrew_Sinclair]
hmmp-op 613 udp HMMP Operation [Andrew_Sinclair] [Andrew_Sinclair]
sshell 614 tcp SSLshell [Simon_J_Gerraty] [Simon_J_Gerraty]
sshell 614 udp SSLshell [Simon_J_Gerraty] [Simon_J_Gerraty]
sco-inetmgr 615 tcp Internet Configuration Manager
sco-inetmgr 615 udp Internet Configuration Manager
sco-sysmgr 616 tcp SCO System Administration Server
sco-sysmgr 616 udp SCO System Administration Server
sco-dtmgr 617 tcp SCO Desktop Administration Server [Christopher_Durham] [Christopher_Durham]
sco-dtmgr 617 udp SCO Desktop Administration Server [Christopher_Durham] [Christopher_Durham]
dei-icda 618 tcp DEI-ICDA [David_Turner] [David_Turner]
dei-icda 618 udp DEI-ICDA [David_Turner] [David_Turner]
compaq-evm 619 tcp Compaq EVM [Jem_Treadwell] [Jem_Treadwell]
compaq-evm 619 udp Compaq EVM [Jem_Treadwell] [Jem_Treadwell]
sco-websrvrmgr 620 tcp SCO WebServer Manager [Christopher_Durham] [Christopher_Durham]
sco-websrvrmgr 620 udp SCO WebServer Manager [Christopher_Durham] [Christopher_Durham]
escp-ip 621 tcp ESCP [Lai_Zit_Seng] [Lai_Zit_Seng]
escp-ip 621 udp ESCP [Lai_Zit_Seng] [Lai_Zit_Seng]
collaborator 622 tcp Collaborator [Johnson_Davis] [Johnson_Davis]
collaborator 622 udp Collaborator [Johnson_Davis] [Johnson_Davis]
oob-ws-http 623 tcp DMTF out-of-band web services management protocol [Jim_Davis] [Jim_Davis] 2007-06
asf-rmcp 623 udp ASF Remote Management and Control Protocol [Carl_First] [Carl_First]
cryptoadmin 624 tcp Crypto Admin [Tony_Walker] [Tony_Walker]
cryptoadmin 624 udp Crypto Admin [Tony_Walker] [Tony_Walker]
dec-dlm 625 tcp DEC DLM

IANA assigned this well-formed service name as a replacement for "dec_dlm".
[Rudi_Martin_2] [Rudi_Martin_2]
dec_dlm 625 tcp DEC DLM [Rudi_Martin_2] [Rudi_Martin_2] This entry is an alias to "dec-dlm". This entry is now historic, not usable for use with many common service discovery mechanisms.
dec-dlm 625 udp DEC DLM

IANA assigned this well-formed service name as a replacement for "dec_dlm".
[Rudi_Martin_2] [Rudi_Martin_2]
dec_dlm 625 udp DEC DLM [Rudi_Martin_2] [Rudi_Martin_2] This entry is an alias to "dec-dlm". This entry is now historic, not usable for use with many common service discovery mechanisms.
asia 626 tcp ASIA [Michael_Dasenbrock] [Michael_Dasenbrock]
asia 626 udp ASIA [Michael_Dasenbrock] [Michael_Dasenbrock]
passgo-tivoli 627 tcp PassGo Tivoli [John_Rainford_2] [John_Rainford_2]
passgo-tivoli 627 udp PassGo Tivoli [John_Rainford_2] [John_Rainford_2]
qmqp 628 tcp QMQP [D_J_Bernstein] [D_J_Bernstein] 2018-04-05
qmqp 628 udp QMQP [D_J_Bernstein] [D_J_Bernstein] 2018-04-05
3com-amp3 629 tcp 3Com AMP3 [Prakash_Banthia] [Prakash_Banthia]
3com-amp3 629 udp 3Com AMP3 [Prakash_Banthia] [Prakash_Banthia]
rda 630 tcp RDA [John_Hadjioannou] [John_Hadjioannou]
rda 630 udp RDA [John_Hadjioannou] [John_Hadjioannou]
ipp 631 tcp IPP (Internet Printing Protocol) [IESG] [IETF_Chair] 2018-07-06 [RFC8011] Defined TXT keys: See BonjourPrinting.pdf.
ipp 631 udp IPP (Internet Printing Protocol) [IESG] [IETF_Chair] 2018-07-06 [RFC8011] Defined TXT keys: See BonjourPrinting.pdf.
ipps 631 tcp Internet Printing Protocol over HTTPS [IESG] [IETF_Chair] 2018-07-06 [RFC8011]
bmpp 632 tcp bmpp [Troy_Rollo] [Troy_Rollo]
bmpp 632 udp bmpp [Troy_Rollo] [Troy_Rollo]
servstat 633 tcp Service Status update (Sterling Software) [Greg_Rose] [Greg_Rose]
servstat 633 udp Service Status update (Sterling Software) [Greg_Rose] [Greg_Rose]
ginad 634 tcp ginad [Mark_Crother] [Mark_Crother]
ginad 634 udp ginad [Mark_Crother] [Mark_Crother]
rlzdbase 635 tcp RLZ DBase [Michael_Ginn] [Michael_Ginn]
rlzdbase 635 udp RLZ DBase [Michael_Ginn] [Michael_Ginn]
ldaps 636 tcp ldap protocol over TLS/SSL (was sldap) [Pat_Richard] [Pat_Richard]
ldaps 636 udp ldap protocol over TLS/SSL (was sldap) [Pat_Richard] [Pat_Richard]
lanserver 637 tcp lanserver [Chris_Larsson] [Chris_Larsson]
lanserver 637 udp lanserver [Chris_Larsson] [Chris_Larsson]
mcns-sec 638 tcp mcns-sec [Kaz_Ozawa] [Kaz_Ozawa]
mcns-sec 638 udp mcns-sec [Kaz_Ozawa] [Kaz_Ozawa]
msdp 639 tcp MSDP [Dino_Farinacci] [Dino_Farinacci]
msdp 639 udp MSDP [Dino_Farinacci] [Dino_Farinacci]
entrust-sps 640 tcp entrust-sps [Marek_Buchler] [Marek_Buchler]
entrust-sps 640 udp entrust-sps [Marek_Buchler] [Marek_Buchler]
repcmd 641 tcp repcmd [Scott_Dale] [Scott_Dale]
repcmd 641 udp repcmd [Scott_Dale] [Scott_Dale]
esro-emsdp 642 tcp ESRO-EMSDP V1.3 [Mohsen_Banan_2] [Mohsen_Banan_2]
esro-emsdp 642 udp ESRO-EMSDP V1.3 [Mohsen_Banan_2] [Mohsen_Banan_2]
sanity 643 tcp SANity [Peter_Viscarola] [Peter_Viscarola]
sanity 643 udp SANity [Peter_Viscarola] [Peter_Viscarola]
dwr 644 tcp dwr [Bill_Fenner] [Bill_Fenner]
dwr 644 udp dwr [Bill_Fenner] [Bill_Fenner]
pssc 645 tcp PSSC [Egon_Meier_Engelen] [Egon_Meier_Engelen]
pssc 645 udp PSSC [Egon_Meier_Engelen] [Egon_Meier_Engelen]
ldp 646 tcp LDP [Bob_Thomas] [Bob_Thomas]
ldp 646 udp LDP [Bob_Thomas] [Bob_Thomas]
dhcp-failover 647 tcp DHCP Failover [IESG] [IETF_Chair] 2018-05-21 [RFC8156]

People

ID Name Organization Contact URI Last Updated
[Andrew_Sinclair] Andrew Sinclair mailto:andrsin&microsoft.com
[Bill_Fenner] Bill Fenner mailto:fenner&parc.xerox.com
[Bill_Schiefelbein] Bill Schiefelbein mailto:schief&aspen.cray.com
[Bob_Thomas] Bob Thomas mailto:rhthomas&cisco.com
[Carl_First] Carl First mailto:Carl.L.First&intel.com
[Chris_Larsson] Chris Larsson mailto:clarsson&vnet.ibm.com
[Christopher_Durham] Christopher Durham mailto:chrisdu&sco.com
[D_J_Bernstein] D. J. Bernstein mailto:ports&box.cr.yp.to 2018-04-05
[David_Turner] David Turner mailto:digital&quetico.tbaytel.net
[Dino_Farinacci] Dino Farinacci mailto:dino&cisco.com 2008-08-21
[Egon_Meier_Engelen] Egon Meier-Engelen mailto:egon.meier-engelen&dlr.de
[Greg_Rose] Greg Rose mailto:Greg_Rose&sydney.sterling.com
[IESG] IESG mailto:iesg&ietf.org
[IETF_Chair] IETF Chair IETF mailto:chair&ietf.org
[Jem_Treadwell] Jem Treadwell mailto:Jem.Treadwell&compaq.com
[Jim_Davis] Jim Davis mailto:jim.davis&wbemsolutions.com 2007-06
[John_Barnes] John Barnes mailto:jbarnes&crl.com
[John_Hadjioannou] John Hadjioannou mailto:john&minster.co.uk
[John_Rainford_2] John Rainford mailto:john.rainford&passgo.com
[Johnson_Davis] Johnson Davis mailto:johnsond&opteamasoft.com
[Kaz_Ozawa] Kaz Ozawa mailto:k.ozawa&cablelabs.com
[Lai_Zit_Seng] Lai Zit Seng mailto:lzs&pobox.com
[Marek_Buchler] Marek Buchler mailto:Marek.Buchler&entrust.com
[Mark_Crother] Mark Crother mailto:mark&eis.calstate.edu
[Michael_Alyn_Miller] Michael Alyn Miller mailto:iana&aeolon.com
[Michael_Dasenbrock] Michael Dasenbrock mailto:dasenbro&apple.com
[Michael_Ginn] Michael Ginn mailto:ginn&tyxar.com
[Mohsen_Banan_2] Mohsen Banan mailto:mohsen&neda.com
[Pat_Richard] Pat Richard mailto:patr&xcert.com
[Peter_Viscarola] Peter Viscarola mailto:PeterGV&osr.com
[Prakash_Banthia] Prakash Banthia mailto:prakash_banthia&3com.com
[Rick_Troth] Rick Troth mailto:troth&rice.edu
[Rudi_Martin_2] Rudi Martin mailto:Rudi.Martin&edo.mts.dec.com
[Scott_Dale] Scott Dale mailto:scott&replicase.com
[Simon_Baldwin] Simon Baldwin mailto:simonb&sco.com
[Simon_J_Gerraty] Simon J. Gerraty mailto:sjg&quick.com.au
[Tony_Walker] Tony Walker mailto:tony&cryptocard.com
[Troy_Rollo] Troy Rollo mailto:troy&kroll.corvu.com.au