Service Name and Transport Protocol Port Number Registry
- Last Updated
- 2024-04-30
- 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]
- Available Formats
-
CSV
XML
HTML
Plain text
Service Name | Port Number | Transport Protocol | Description | Assignee | Contact | Registration Date | Modification Date | Reference | Service Code | Unauthorized Use Reported | Assignment Notes |
---|---|---|---|---|---|---|---|---|---|---|---|
6 | tcp | Unassigned | |||||||||
6 | udp | Unassigned | |||||||||
discard | 9 | sctp | Discard | [Randall_Stewart] | [Randall_Stewart] | 2022-02-07 | [RFC9260] | ||||
discard | 9 | dccp | Discard | [Eddie_Kohler] | [Eddie_Kohler] | [RFC4340] | 1145656131 | ||||
daytime | 13 | tcp | Daytime | [Jon_Postel] | [Jon_Postel] | [RFC867] | |||||
daytime | 13 | udp | Daytime | [Jon_Postel] | [Jon_Postel] | [RFC867] | |||||
16 | tcp | Unassigned | |||||||||
16 | udp | Unassigned | |||||||||
ftp-data | 20 | sctp | FTP | [Randall_Stewart] | [Randall_Stewart] | 2022-02-07 | [RFC9260] | ||||
ftp | 21 | sctp | FTP | [Randall_Stewart] | [Randall_Stewart] | 2022-02-07 | [RFC9260] | Defined TXT keys: u=<username> p=<password> path=<path> | |||
ssh | 22 | sctp | SSH | [Randall_Stewart] | [Randall_Stewart] | 2022-02-07 | [RFC9260] | Defined TXT keys: u=<username> p=<password> | |||
26 | tcp | Unassigned | |||||||||
26 | udp | Unassigned | |||||||||
36 | tcp | Unassigned | |||||||||
36 | udp | Unassigned | |||||||||
mpm-snd | 46 | tcp | MPM [default send] | [Jon_Postel] | [Jon_Postel] | ||||||
mpm-snd | 46 | udp | MPM [default send] | [Jon_Postel] | [Jon_Postel] | ||||||
xns-auth | 56 | tcp | XNS Authentication | [Susie_Armstrong] | [Susie_Armstrong] | ||||||
xns-auth | 56 | udp | XNS Authentication | [Susie_Armstrong] | [Susie_Armstrong] | ||||||
60 | tcp | Unassigned | |||||||||
60 | udp | Unassigned | |||||||||
61 | tcp | Reserved | 2017-05-18 | This entry has been removed on 2017-05-18. | |||||||
61 | udp | Reserved | 2017-05-18 | This entry has been removed on 2017-05-18. | |||||||
acas | 62 | tcp | ACA Services | [E_Wald] | [E_Wald] | ||||||
acas | 62 | udp | ACA Services | [E_Wald] | [E_Wald] | ||||||
whoispp | 63 | tcp | whois++ IANA assigned this well-formed service name as a replacement for "whois++". |
[Rickard_Schoultz] | [Rickard_Schoultz] | ||||||
whois++ | 63 | tcp | whois++ | [Rickard_Schoultz] | [Rickard_Schoultz] | This entry is an alias to "whoispp". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
whoispp | 63 | udp | whois++ IANA assigned this well-formed service name as a replacement for "whois++". |
[Rickard_Schoultz] | [Rickard_Schoultz] | ||||||
whois++ | 63 | udp | whois++ | [Rickard_Schoultz] | [Rickard_Schoultz] | This entry is an alias to "whoispp". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
covia | 64 | tcp | Communications Integrator (CI) | [Dan_Smith] | [Dan_Smith] | ||||||
covia | 64 | udp | Communications Integrator (CI) | [Dan_Smith] | [Dan_Smith] | ||||||
tacacs-ds | 65 | tcp | TACACS-Database Service | [Kathy_Huber] | [Kathy_Huber] | ||||||
tacacs-ds | 65 | udp | TACACS-Database Service | [Kathy_Huber] | [Kathy_Huber] | ||||||
sql-net | 66 | tcp | Oracle SQL*NET IANA assigned this well-formed service name as a replacement for "sql*net". |
[Jack_Haverty] | [Jack_Haverty] | ||||||
sql*net | 66 | tcp | Oracle SQL*NET | [Jack_Haverty] | [Jack_Haverty] | This entry is an alias to "sql-net". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
sql-net | 66 | udp | Oracle SQL*NET IANA assigned this well-formed service name as a replacement for "sql*net". |
[Jack_Haverty] | [Jack_Haverty] | ||||||
sql*net | 66 | udp | Oracle SQL*NET | [Jack_Haverty] | [Jack_Haverty] | This entry is an alias to "sql-net". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
bootps | 67 | tcp | Bootstrap Protocol Server | [Bill_Croft] | [Bill_Croft] | [RFC951] | Defined TXT keys: None | ||||
bootps | 67 | udp | Bootstrap Protocol Server | ||||||||
bootpc | 68 | tcp | Bootstrap Protocol Client | [Bill_Croft] | [Bill_Croft] | ||||||
bootpc | 68 | udp | Bootstrap Protocol Client | [Bill_Croft] | [Bill_Croft] | ||||||
tftp | 69 | tcp | Trivial File Transfer | [David_Clark] | [David_Clark] | ||||||
tftp | 69 | udp | Trivial File Transfer | [David_Clark] | [David_Clark] | ||||||
deos | 76 | tcp | Distributed External Object Store | [Robert_Ullmann] | [Robert_Ullmann] | ||||||
deos | 76 | udp | Distributed External Object Store | [Robert_Ullmann] | [Robert_Ullmann] | ||||||
finger | 79 | tcp | Finger | [David_Zimmerman] | [David_Zimmerman] | Unauthorized use by some mail users (see [RFC4146] for details) | |||||
finger | 79 | udp | Finger | [David_Zimmerman] | [David_Zimmerman] | Unauthorized use by some mail users (see [RFC4146] for details) | |||||
http | 80 | sctp | HTTP | [Randall_Stewart] | [Randall_Stewart] | 2022-02-07 | [RFC9260] | Defined TXT keys: u=<username> p=<password> path=<path to document> | |||
mfcobol | 86 | tcp | Micro Focus Cobol | [Simon_Edwards] | [Simon_Edwards] | ||||||
mfcobol | 86 | udp | Micro Focus Cobol | [Simon_Edwards] | [Simon_Edwards] | ||||||
dixie | 96 | tcp | DIXIE Protocol Specification | [Tim_Howes] | [Tim_Howes] | ||||||
dixie | 96 | udp | DIXIE Protocol Specification | [Tim_Howes] | [Tim_Howes] | ||||||
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 | |||||
ansanotify | 116 | tcp | ANSA REX Notify | [Nicola_J_Howarth] | [Nicola_J_Howarth] | ||||||
ansanotify | 116 | udp | ANSA REX Notify | [Nicola_J_Howarth] | [Nicola_J_Howarth] | ||||||
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 | |||||
profile | 136 | tcp | PROFILE Naming System | [Larry_Peterson] | [Larry_Peterson] | ||||||
profile | 136 | udp | PROFILE Naming System | [Larry_Peterson] | [Larry_Peterson] | ||||||
iso-tp0 | 146 | tcp | ISO-IP0 | ||||||||
iso-tp0 | 146 | udp | ISO-IP0 | ||||||||
sqlsrv | 156 | tcp | SQL Service | [Craig_Rogers] | [Craig_Rogers] | ||||||
sqlsrv | 156 | udp | SQL Service | [Craig_Rogers] | [Craig_Rogers] | ||||||
sgmp-traps | 160 | tcp | SGMP-TRAPS | [Marty_Schoffstahl] | [Marty_Schoffstahl] | ||||||
sgmp-traps | 160 | udp | SGMP-TRAPS | [Marty_Schoffstahl] | [Marty_Schoffstahl] | ||||||
snmp | 161 | tcp | SNMP | ||||||||
snmp | 161 | udp | SNMP | ||||||||
snmptrap | 162 | tcp | SNMPTRAP | [Marshall_Rose] | [Marshall_Rose] | ||||||
snmptrap | 162 | udp | SNMPTRAP | [Marshall_Rose] | [Marshall_Rose] | ||||||
cmip-man | 163 | tcp | CMIP/TCP Manager | ||||||||
cmip-man | 163 | udp | CMIP/TCP Manager | ||||||||
cmip-agent | 164 | tcp | CMIP/TCP Agent | [Amatzia_Ben_Artzi] | [Amatzia_Ben_Artzi] | ||||||
cmip-agent | 164 | udp | CMIP/TCP Agent | [Amatzia_Ben_Artzi] | [Amatzia_Ben_Artzi] | ||||||
xns-courier | 165 | tcp | Xerox | [Susie_Armstrong_2] | [Susie_Armstrong_2] | ||||||
xns-courier | 165 | udp | Xerox | [Susie_Armstrong_2] | [Susie_Armstrong_2] | ||||||
s-net | 166 | tcp | Sirius Systems | [Brian_Lloyd] | [Brian_Lloyd] | ||||||
s-net | 166 | udp | Sirius Systems | [Brian_Lloyd] | [Brian_Lloyd] | ||||||
namp | 167 | tcp | NAMP | [Marty_Schoffstahl] | [Marty_Schoffstahl] | ||||||
namp | 167 | udp | NAMP | [Marty_Schoffstahl] | [Marty_Schoffstahl] | ||||||
rsvd | 168 | tcp | RSVD | [Alan_Sandell] | [Alan_Sandell] | 2008-05-01 | |||||
rsvd | 168 | udp | RSVD | [Alan_Sandell] | [Alan_Sandell] | 2008-05-01 | |||||
send | 169 | tcp | SEND | [William_Oldwin] | [William_Oldwin] | 2019-04-22 | |||||
send | 169 | udp | SEND | [William_Oldwin] | [William_Oldwin] | 2019-04-22 | |||||
genrad-mux | 176 | tcp | GENRAD-MUX | [Ron_Thornton] | [Ron_Thornton] | ||||||
genrad-mux | 176 | udp | GENRAD-MUX | [Ron_Thornton] | [Ron_Thornton] | ||||||
bgp | 179 | sctp | BGP | [Randall_Stewart] | [Randall_Stewart] | 2022-02-07 | [RFC9260] | ||||
kis | 186 | tcp | KIS Protocol | [Ralph_Droms] | [Ralph_Droms] | ||||||
kis | 186 | udp | KIS Protocol | [Ralph_Droms] | [Ralph_Droms] | ||||||
dn6-nlm-aud | 195 | tcp | DNSIX Network Level Module Audit | ||||||||
dn6-nlm-aud | 195 | udp | DNSIX Network Level Module Audit | ||||||||
dn6-smm-red | 196 | tcp | DNSIX Session Mgt Module Audit Redir | [Lawrence_Lebahn] | [Lawrence_Lebahn] | ||||||
dn6-smm-red | 196 | udp | DNSIX Session Mgt Module Audit Redir | [Lawrence_Lebahn] | [Lawrence_Lebahn] | ||||||
at-zis | 206 | tcp | AppleTalk Zone Information | ||||||||
at-zis | 206 | udp | AppleTalk Zone Information | ||||||||
CAIlic | 216 | tcp | Computer Associates Int'l License Server | [Chuck_Spitz] | [Chuck_Spitz] | ||||||
CAIlic | 216 | udp | Computer Associates Int'l License Server | [Chuck_Spitz] | [Chuck_Spitz] | ||||||
dsp3270 | 246 | tcp | Display Systems Protocol | [Weldon_J_Showalter] | [Weldon_J_Showalter] | ||||||
dsp3270 | 246 | udp | Display Systems Protocol | [Weldon_J_Showalter] | [Weldon_J_Showalter] | ||||||
rap | 256 | tcp | RAP | [J_S_Greenfield] | [J_S_Greenfield] |