Internet Assigned Numbers Authority

Service Name and Transport Protocol Port Number Registry

Last Updated
2024-12-20
Expert(s)
TCP/UDP: Joe Touch; Eliot Lear, Kumiko Ono, Wes Eddy, Brian Trammell, 
Jana Iyengar, and Michael Scharf
SCTP: 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 different uses of these ranges are 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.                                                   *
************************************************************************

Request an Assignment
  [https://www.iana.org/protocols/apply]

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Service Name Port Number Transport Protocol Description Assignee Contact Registration Date Modification Date Reference Service Code Unauthorized Use Reported Assignment Notes
cert-initiator 1639 tcp cert-initiator
cert-initiator 1639 udp cert-initiator
cert-responder 1640 tcp cert-responder [Tom_Markson] [Tom_Markson]
cert-responder 1640 udp cert-responder [Tom_Markson] [Tom_Markson]
invision 1641 tcp InVision [Christopher_Davey] [Christopher_Davey]
invision 1641 udp InVision [Christopher_Davey] [Christopher_Davey]
isis-am 1642 tcp isis-am
isis-am 1642 udp isis-am
isis-ambc 1643 tcp isis-ambc [Ken_Chapman] [Ken_Chapman]
isis-ambc 1643 udp isis-ambc [Ken_Chapman] [Ken_Chapman]
saiseh 1644 tcp Satellite-data Acquisition System 4 [Bill_Taylor] [Bill_Taylor]
saiseh 1644 udp Satellite-data Acquisition System 4 [Bill_Taylor] [Bill_Taylor]
sightline 1645 tcp SightLine [admin] [admin]
sightline 1645 udp SightLine [admin] [admin]
sa-msg-port 1646 tcp sa-msg-port [Eric_Whitehill] [Eric_Whitehill]
sa-msg-port 1646 udp sa-msg-port [Eric_Whitehill] [Eric_Whitehill]
rsap 1647 tcp rsap [Holger_Reif] [Holger_Reif]
rsap 1647 udp rsap [Holger_Reif] [Holger_Reif]
concurrent-lm 1648 tcp concurrent-lm [Maggie_Brinsford] [Maggie_Brinsford]
concurrent-lm 1648 udp concurrent-lm [Maggie_Brinsford] [Maggie_Brinsford]
kermit 1649 tcp kermit [Frank_da_Cruz] [Frank_da_Cruz]
kermit 1649 udp kermit [Frank_da_Cruz] [Frank_da_Cruz]
nkd 1650 tcp nkdn
nkd 1650 udp nkd
shiva-confsrvr 1651 tcp shiva_confsrvr

IANA assigned this well-formed service name as a replacement for "shiva_confsrvr".
[Mike_Horowitz] [Mike_Horowitz]
shiva_confsrvr 1651 tcp shiva_confsrvr [Mike_Horowitz] [Mike_Horowitz] This entry is an alias to "shiva-confsrvr". This entry is now historic, not usable for use with many common service discovery mechanisms.
shiva-confsrvr 1651 udp shiva_confsrvr

IANA assigned this well-formed service name as a replacement for "shiva_confsrvr".
[Mike_Horowitz] [Mike_Horowitz]
shiva_confsrvr 1651 udp shiva_confsrvr [Mike_Horowitz] [Mike_Horowitz] This entry is an alias to "shiva-confsrvr". This entry is now historic, not usable for use with many common service discovery mechanisms.
xnmp 1652 tcp xnmp [Ali_Saleh] [Ali_Saleh]
xnmp 1652 udp xnmp [Ali_Saleh] [Ali_Saleh]
alphatech-lm 1653 tcp alphatech-lm [Joseph_Hauk] [Joseph_Hauk]
alphatech-lm 1653 udp alphatech-lm [Joseph_Hauk] [Joseph_Hauk]
stargatealerts 1654 tcp stargatealerts [Tim_Coppernoll] [Tim_Coppernoll]
stargatealerts 1654 udp stargatealerts [Tim_Coppernoll] [Tim_Coppernoll]
dec-mbadmin 1655 tcp dec-mbadmin
dec-mbadmin 1655 udp dec-mbadmin
dec-mbadmin-h 1656 tcp dec-mbadmin-h [Nick_Shipman] [Nick_Shipman]
dec-mbadmin-h 1656 udp dec-mbadmin-h [Nick_Shipman] [Nick_Shipman]
fujitsu-mmpdc 1657 tcp fujitsu-mmpdc [Katsumi_Oomuro] [Katsumi_Oomuro]
fujitsu-mmpdc 1657 udp fujitsu-mmpdc [Katsumi_Oomuro] [Katsumi_Oomuro]
sixnetudr 1658 tcp sixnetudr [Red_Lion_Controls] [Denis_Aull] 2014-05-21
sixnetudr 1658 udp sixnetudr [Red_Lion_Controls] [Denis_Aull] 2014-05-21
sg-lm 1659 tcp Silicon Grail License Manager [William_R_Bishop] [William_R_Bishop]
sg-lm 1659 udp Silicon Grail License Manager [William_R_Bishop] [William_R_Bishop]
skip-mc-gikreq 1660 tcp skip-mc-gikreq [Tom_Markson] [Tom_Markson]
skip-mc-gikreq 1660 udp skip-mc-gikreq [Tom_Markson] [Tom_Markson]
netview-aix-1 1661 tcp netview-aix-1
netview-aix-1 1661 udp netview-aix-1
netview-aix-2 1662 tcp netview-aix-2
netview-aix-2 1662 udp netview-aix-2
netview-aix-3 1663 tcp netview-aix-3
netview-aix-3 1663 udp netview-aix-3
netview-aix-4 1664 tcp netview-aix-4
netview-aix-4 1664 udp netview-aix-4
netview-aix-5 1665 tcp netview-aix-5
netview-aix-5 1665 udp netview-aix-5
netview-aix-6 1666 tcp netview-aix-6
netview-aix-6 1666 udp netview-aix-6
netview-aix-7 1667 tcp netview-aix-7
netview-aix-7 1667 udp netview-aix-7
netview-aix-8 1668 tcp netview-aix-8
netview-aix-8 1668 udp netview-aix-8
netview-aix-9 1669 tcp netview-aix-9
netview-aix-9 1669 udp netview-aix-9
netview-aix-10 1670 tcp netview-aix-10
netview-aix-10 1670 udp netview-aix-10
netview-aix-11 1671 tcp netview-aix-11
netview-aix-11 1671 udp netview-aix-11
netview-aix-12 1672 tcp netview-aix-12 [Martha_Crisson] [Martha_Crisson]
netview-aix-12 1672 udp netview-aix-12 [Martha_Crisson] [Martha_Crisson]
proshare-mc-1 1673 tcp Intel Proshare Multicast
proshare-mc-1 1673 udp Intel Proshare Multicast
proshare-mc-2 1674 tcp Intel Proshare Multicast [Mark_Lewis] [Mark_Lewis]
proshare-mc-2 1674 udp Intel Proshare Multicast [Mark_Lewis] [Mark_Lewis]
pdp 1675 tcp Pacific Data Products [Gary_Morton] [Gary_Morton]
pdp 1675 udp Pacific Data Products [Gary_Morton] [Gary_Morton]
netcomm1 1676 tcp netcomm1
netcomm2 1676 udp netcomm2 [Bulent_Kasman] [Bulent_Kasman]
groupwise 1677 tcp groupwise [Brent_Bradshaw] [Brent_Bradshaw]
groupwise 1677 udp groupwise [Brent_Bradshaw] [Brent_Bradshaw]
prolink 1678 tcp prolink [Brian_Abramson] [Brian_Abramson]
prolink 1678 udp prolink [Brian_Abramson] [Brian_Abramson]
darcorp-lm 1679 tcp darcorp-lm [DARcorp] [DARcorp]
darcorp-lm 1679 udp darcorp-lm [DARcorp] [DARcorp]
microcom-sbp 1680 tcp microcom-sbp [Boris_B_Maiden] [Boris_B_Maiden]
microcom-sbp 1680 udp microcom-sbp [Boris_B_Maiden] [Boris_B_Maiden]
sd-elmd 1681 tcp sd-elmd [Bryan_Otey] [Bryan_Otey]
sd-elmd 1681 udp sd-elmd [Bryan_Otey] [Bryan_Otey]
lanyon-lantern 1682 tcp lanyon-lantern [Robin_Lewis] [Robin_Lewis]
lanyon-lantern 1682 udp lanyon-lantern [Robin_Lewis] [Robin_Lewis]
ncpm-hip 1683 tcp ncpm-hip [Ken_Hearn] [Ken_Hearn]
ncpm-hip 1683 udp ncpm-hip [Ken_Hearn] [Ken_Hearn]
snaresecure 1684 tcp SnareSecure [Marty_Batchelder] [Marty_Batchelder]
snaresecure 1684 udp SnareSecure [Marty_Batchelder] [Marty_Batchelder]
n2nremote 1685 tcp n2nremote [Kin_Chan_2] [Kin_Chan_2]
n2nremote 1685 udp n2nremote [Kin_Chan_2] [Kin_Chan_2]
cvmon 1686 tcp cvmon [Carol_Ann_Krug] [Carol_Ann_Krug]
cvmon 1686 udp cvmon [Carol_Ann_Krug] [Carol_Ann_Krug]
nsjtp-ctrl 1687 tcp nsjtp-ctrl
nsjtp-ctrl 1687 udp nsjtp-ctrl
nsjtp-data 1688 tcp nsjtp-data [Orazio_Granato] [Orazio_Granato]

Contact Information

ID Name Organization Contact URI Last Updated
[Ali_Saleh] Ali Saleh mailto:scomm&cerf.net
[Bill_Taylor] Bill Taylor mailto:sais&ssec.wisc.edu
[Boris_B_Maiden] Boris B. Maiden mailto:Boris_Maiden&smtp.microcom.com
[Brent_Bradshaw] Brent Bradshaw mailto:bbradshaw&novell.com
[Brian_Abramson] Brian Abramson mailto:brianab&soul.tv.tek.com
[Bryan_Otey] Bryan Otey mailto:bwo&softdesk.com
[Bulent_Kasman] Bulent Kasman mailto:BKasman&symantec.com
[Carol_Ann_Krug] Carol Ann Krug mailto:carolann&hpmfas3.cup.hp.com
[Christopher_Davey] Christopher Davey mailto:niallocl&quay.ie
[DARcorp] mailto:DARcorp&aol.com
[Denis_Aull] Denis Aull Red Lion Controls mailto:Engineering&RedLion.net 2014-05-21
[Eric_Whitehill] Eric Whitehill mailto:Eric.Whitehill&itt.com
[Frank_da_Cruz] Frank da Cruz mailto:fdc&watsun.cc.columbia.edu
[Gary_Morton] Gary Morton mailto:mortong&pacdata.com
[Holger_Reif] Holger Reif mailto:Holger.Reif&prakinf.tu-ilmenau.de
[Joseph_Hauk] Joseph Hauk mailto:joseph.hauk&alphatech.com
[Katsumi_Oomuro] Katsumi Oomuro mailto:NAE01421&niftyserve.or.jp
[Ken_Chapman] Ken Chapman mailto:kchapman&isis.com
[Ken_Hearn] Ken Hearn mailto:hearn&hpindacx.cup.hp.com
[Kin_Chan_2] Kin Chan mailto:kchan&net2net.com
[Maggie_Brinsford] Maggie Brinsford mailto:mjb&concurrent.co.uk
[Mark_Lewis] Mark Lewis mailto:Mark_Lewis&ccm.jf.intel.com
[Martha_Crisson] Martha Crisson mailto:CRISSON&ralvm12.vnet.ibm.com
[Marty_Batchelder] Marty Batchelder mailto:marty&capres.com
[Mike_Horowitz] Mike Horowitz mailto:mah&shiva.com
[Nick_Shipman] Nick Shipman mailto:Nick.Shipman&mrmog.reo.dec.com
[Orazio_Granato] Orazio Granato mailto:og&wsbgrd01.italy.hp.com
[Red_Lion_Controls] Red Lion Controls mailto:Engineering&RedLion.net 2014-05-21
[Robin_Lewis] Robin Lewis mailto:robin.lewis&lanyon.com
[Tim_Coppernoll] Tim Coppernoll mailto:Tim_Coppernoll&ccm.jf.intel.com
[Tom_Markson] Tom Markson mailto:markson&osmosys.incog.com
[William_R_Bishop] William R Bishop mailto:wrb&world.std.com
[admin] admin mailto:iana&sightlinesystems.com