Service Name and Transport Protocol Port Number Registry

Last Updated
2014-12-18
Expert(s)
TCP/UDP: Joe Touch; Eliot Lear, Allison Mankin, Markku Kojo, Kumiko Ono, Martin Stiemerling, Lars Eggert, Alexey Melnikov and Wes Eddy; 
    DCCP: Eddie Kohler; SCTP: Allison Mankin
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]. System Ports are assigned by IETF
process for standards-track protocols, as per [RFC6335].  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
npp 92 udp Network Printing Protocol [Louis_Mamakos] [Louis_Mamakos]
dcp 93 tcp Device Control Protocol [Daniel_Tappan] [Daniel_Tappan]
dcp 93 udp Device Control Protocol [Daniel_Tappan] [Daniel_Tappan]
objcall 94 tcp Tivoli Object Dispatcher [Tom_Bereiter] [Tom_Bereiter]
objcall 94 udp Tivoli Object Dispatcher [Tom_Bereiter] [Tom_Bereiter]
supdup 95 tcp SUPDUP [Mark_Crispin] [Mark_Crispin]
supdup 95 udp SUPDUP [Mark_Crispin] [Mark_Crispin]
dixie 96 tcp DIXIE Protocol Specification [Tim_Howes] [Tim_Howes]
dixie 96 udp DIXIE Protocol Specification [Tim_Howes] [Tim_Howes]
swift-rvf 97 tcp Swift Remote Virtural File Protocol [Maurice_R_Turcotte] [Maurice_R_Turcotte]
swift-rvf 97 udp Swift Remote Virtural File Protocol [Maurice_R_Turcotte] [Maurice_R_Turcotte]
tacnews 98 tcp TAC News [Jon_Postel] [Jon_Postel]
tacnews 98 udp TAC News [Jon_Postel] [Jon_Postel]
metagram 99 tcp Metagram Relay [Geoff_Goodfellow] [Geoff_Goodfellow]
metagram 99 udp Metagram Relay [Geoff_Goodfellow] [Geoff_Goodfellow]
100 Unassigned 2012-03-21 Known Unauthorized Use on 100
hostname 101 tcp NIC Host Name Server [Jon_Postel] [Jon_Postel]
hostname 101 udp NIC Host Name Server [Jon_Postel] [Jon_Postel]
iso-tsap 102 tcp ISO-TSAP Class 0 [Marshall_Rose] [Marshall_Rose]
iso-tsap 102 udp ISO-TSAP Class 0 [Marshall_Rose] [Marshall_Rose]
gppitnp 103 tcp Genesis Point-to-Point Trans Net
gppitnp 103 udp Genesis Point-to-Point Trans Net
acr-nema 104 tcp ACR-NEMA Digital Imag. & Comm. 300 [Patrick_McNamee] [Patrick_McNamee]
acr-nema 104 udp ACR-NEMA Digital Imag. & Comm. 300 [Patrick_McNamee] [Patrick_McNamee]
cso 105 tcp CCSO name server protocol [Martin_Hamilton] [Martin_Hamilton]
cso 105 udp CCSO name server protocol [Martin_Hamilton] [Martin_Hamilton]
csnet-ns 105 tcp Mailbox Name Nameserver [Marvin_Solomon] [Marvin_Solomon]
csnet-ns 105 udp Mailbox Name Nameserver [Marvin_Solomon] [Marvin_Solomon]
3com-tsmux 106 tcp 3COM-TSMUX [Jeremy_Siegel] [Jeremy_Siegel] Known Unauthorized Use on 106
3com-tsmux 106 udp 3COM-TSMUX [Jeremy_Siegel] [Jeremy_Siegel] Known Unauthorized Use on 106
rtelnet 107 tcp Remote Telnet Service [Jon_Postel] [Jon_Postel]
rtelnet 107 udp Remote Telnet Service [Jon_Postel] [Jon_Postel]
snagas 108 tcp SNA Gateway Access Server [Kevin_Murphy] [Kevin_Murphy]
snagas 108 udp SNA Gateway Access Server [Kevin_Murphy] [Kevin_Murphy]
pop2 109 tcp Post Office Protocol - Version 2 [Joyce_K_Reynolds] [Joyce_K_Reynolds]
pop2 109 udp Post Office Protocol - Version 2 [Joyce_K_Reynolds] [Joyce_K_Reynolds]
pop3 110 tcp Post Office Protocol - Version 3 [Marshall_Rose] [Marshall_Rose]
pop3 110 udp Post Office Protocol - Version 3 [Marshall_Rose] [Marshall_Rose]
sunrpc 111 tcp SUN Remote Procedure Call [Chuck_McManis] [Chuck_McManis]
sunrpc 111 udp SUN Remote Procedure Call [Chuck_McManis] [Chuck_McManis]
mcidas 112 tcp McIDAS Data Transmission Protocol [Glenn_Davis] [Glenn_Davis]
mcidas 112 udp McIDAS Data Transmission Protocol [Glenn_Davis] [Glenn_Davis]
ident 113 tcp
auth 113 tcp Authentication Service [Mike_St_Johns] [Mike_St_Johns]
auth 113 udp Authentication Service [Mike_St_Johns] [Mike_St_Johns]
114 unassigned Deprecated June 2004
sftp 115 tcp Simple File Transfer Protocol [Mark_Lottor] [Mark_Lottor]
sftp 115 udp Simple File Transfer Protocol [Mark_Lottor] [Mark_Lottor]
ansanotify 116 tcp ANSA REX Notify [Nicola_J_Howarth] [Nicola_J_Howarth]
ansanotify 116 udp ANSA REX Notify [Nicola_J_Howarth] [Nicola_J_Howarth]
uucp-path 117 tcp UUCP Path Service
uucp-path 117 udp UUCP Path Service
sqlserv 118 tcp SQL Services [Larry_Barnes] [Larry_Barnes]
sqlserv 118 udp SQL Services [Larry_Barnes] [Larry_Barnes]
nntp 119 tcp Network News Transfer Protocol [Phil_Lapsley] [Phil_Lapsley]
nntp 119 udp Network News Transfer Protocol [Phil_Lapsley] [Phil_Lapsley]
cfdptkt 120 tcp CFDPTKT [John_Ioannidis] [John_Ioannidis]
cfdptkt 120 udp CFDPTKT [John_Ioannidis] [John_Ioannidis]
erpc 121 tcp Encore Expedited Remote Pro.Call [Jack_ONeil] [Jack_ONeil]
erpc 121 udp Encore Expedited Remote Pro.Call [Jack_ONeil] [Jack_ONeil]
smakynet 122 tcp SMAKYNET [Pierre_Arnaud] [Pierre_Arnaud]
smakynet 122 udp SMAKYNET [Pierre_Arnaud] [Pierre_Arnaud]
ntp 123 tcp Network Time Protocol [Dave_Mills] [Dave_Mills] [RFC5905]
ntp 123 udp Network Time Protocol [Dave_Mills] [Dave_Mills] [RFC5905]
ansatrader 124 tcp ANSA REX Trader [Nicola_J_Howarth] [Nicola_J_Howarth]
ansatrader 124 udp ANSA REX Trader [Nicola_J_Howarth] [Nicola_J_Howarth]
locus-map 125 tcp Locus PC-Interface Net Map Ser [Eric_Peterson] [Eric_Peterson]
locus-map 125 udp Locus PC-Interface Net Map Ser [Eric_Peterson] [Eric_Peterson]
nxedit 126 tcp NXEdit [Don_Payette] [Don_Payette] Port 126 Previously assigned to application below unitary 126/tcp Unisys Unitary Login unitary 126/udp Unisys Unitary Login <feil&kronos.nisd.cam.unisys.com> Port 126 Previously assigned to application above
nxedit 126 udp NXEdit [Don_Payette] [Don_Payette] Port 126 Previously assigned to application below unitary 126/tcp Unisys Unitary Login unitary 126/udp Unisys Unitary Login <feil&kronos.nisd.cam.unisys.com> Port 126 Previously assigned to application above
locus-con 127 tcp Locus PC-Interface Conn Server [Eric_Peterson] [Eric_Peterson]
locus-con 127 udp Locus PC-Interface Conn Server [Eric_Peterson] [Eric_Peterson]
gss-xlicen 128 tcp GSS X License Verification [John_Light] [John_Light]
gss-xlicen 128 udp GSS X License Verification [John_Light] [John_Light]
pwdgen 129 tcp Password Generator Protocol [Frank_J_Wacho] [Frank_J_Wacho]
pwdgen 129 udp Password Generator Protocol [Frank_J_Wacho] [Frank_J_Wacho]
cisco-fna 130 tcp cisco FNATIVE
cisco-fna 130 udp cisco FNATIVE
cisco-tna 131 tcp cisco TNATIVE
cisco-tna 131 udp cisco TNATIVE
cisco-sys 132 tcp cisco SYSMAINT
cisco-sys 132 udp cisco SYSMAINT
statsrv 133 tcp Statistics Service [Dave_Mills_2] [Dave_Mills_2]
statsrv 133 udp Statistics Service [Dave_Mills_2] [Dave_Mills_2]
ingres-net 134 tcp INGRES-NET Service [Mike_Berrow] [Mike_Berrow]
ingres-net 134 udp INGRES-NET Service [Mike_Berrow] [Mike_Berrow]
epmap 135 tcp DCE endpoint resolution [Joe_Pato] [Joe_Pato]
epmap 135 udp DCE endpoint resolution [Joe_Pato] [Joe_Pato]
profile 136 tcp PROFILE Naming System [Larry_Peterson] [Larry_Peterson]
profile 136 udp PROFILE Naming System [Larry_Peterson] [Larry_Peterson]
netbios-ns 137 tcp NETBIOS Name Service
netbios-ns 137 udp NETBIOS Name Service
netbios-dgm 138 tcp NETBIOS Datagram Service
netbios-dgm 138 udp NETBIOS Datagram Service
netbios-ssn 139 tcp NETBIOS Session Service [Jon_Postel] [Jon_Postel]
netbios-ssn 139 udp NETBIOS Session Service [Jon_Postel] [Jon_Postel]
emfis-data 140 tcp EMFIS Data Service
emfis-data 140 udp EMFIS Data Service
emfis-cntl 141 tcp EMFIS Control Service [Gerd_Beling] [Gerd_Beling]
emfis-cntl 141 udp EMFIS Control Service [Gerd_Beling] [Gerd_Beling]
bl-idm 142 tcp Britton-Lee IDM [Susie_Snitzer] [Susie_Snitzer]

People

ID Name Contact URI Last Updated
[Chuck_McManis] Chuck McManis mailto:cmcmanis&freegate.net
[Daniel_Tappan] Daniel Tappan mailto:Tappan&bbn.com
[Dave_Mills] Dave Mills mailto:mills&udel.edu
[Dave_Mills_2] Dave Mills mailto:Mills&huey.udel.edu
[Don_Payette] Don Payette mailto:Don.Payette&unisys.com
[Eric_Peterson] Eric Peterson mailto:lcc.eric&seas.ucla.edu
[Frank_J_Wacho] Frank J. Wacho mailto:WANCHO&wsmr-simtel20.army.mil
[Geoff_Goodfellow] Geoff Goodfellow mailto:Geoff&fernwood.mpk.ca.us
[Gerd_Beling] Gerd Beling mailto:GBELING&isi.edu
[Glenn_Davis] Glenn Davis mailto:support&unidata.ucar.edu
[Jack_ONeil] Jack O'Neil
[Jeremy_Siegel] Jeremy Siegel mailto:jzs&nsd.3com.com
[Joe_Pato] Joe Pato mailto:pato&apollo.hp.com
[John_Ioannidis] John Ioannidis mailto:ji&close.cs.columbia.ed
[John_Light] John Light mailto:johnl&gssc.gss.com
[Jon_Postel] Jon Postel mailto:postel&isi.edu
[Joyce_K_Reynolds] Joyce K. Reynolds mailto:jkrey&isi.edu
[Kevin_Murphy] Kevin Murphy mailto:murphy&sevens.lkg.dec.com
[Larry_Barnes] Larry Barnes mailto:barnes&broke.enet.dec.com
[Larry_Peterson] Larry Peterson mailto:llp&arizona.edu
[Louis_Mamakos] Louis Mamakos mailto:louie&sayshell.umd.edu
[Mark_Crispin] Mark Crispin mailto:MRC&panda.com
[Mark_Lottor] Mark Lottor mailto:MKL&nisc.sri.com
[Marshall_Rose] Marshall Rose mailto:mrose&dbc.mtview.ca.us
[Martin_Hamilton] Martin Hamilton mailto:martin&mrrl.lut.as.uk
[Marvin_Solomon] Marvin Solomon mailto:solomon&cs.wisc.edu
[Maurice_R_Turcotte] Maurice R. Turcotte mailto:mailrus!uflorida!rm1!dnmrt%25rmatl@uunet.uu.net
[Mike_Berrow] Mike Berrow
[Mike_St_Johns] Mike St. Johns mailto:stjohns&arpa.mil
[Nicola_J_Howarth] Nicola J. Howarth mailto:njh&ansa.co.uk
[Patrick_McNamee] Patrick McNamee
[Phil_Lapsley] Phil Lapsley mailto:phil&ucbarpa.berkeley.edu
[Pierre_Arnaud] Pierre Arnaud mailto:pierre.arnaud&iname.com
[Susie_Snitzer] Susie Snitzer
[Tim_Howes] Tim Howes mailto:Tim.Howes&terminator.cc.umich.edu
[Tom_Bereiter] Tom Bereiter