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 |
---|---|---|---|---|---|---|---|---|---|---|---|
at-7 | 207 | udp | AppleTalk Unused | ||||||||
at-8 | 208 | tcp | AppleTalk Unused | [Rob_Chandhok] | [Rob_Chandhok] | ||||||
at-8 | 208 | udp | AppleTalk Unused | [Rob_Chandhok] | [Rob_Chandhok] | ||||||
qmtp | 209 | tcp | The Quick Mail Transfer Protocol | [D_J_Bernstein] | [D_J_Bernstein] | 2018-04-05 | |||||
qmtp | 209 | udp | The Quick Mail Transfer Protocol | [D_J_Bernstein] | [D_J_Bernstein] | 2018-04-05 | |||||
z39-50 | 210 | tcp | ANSI Z39.50 IANA assigned this well-formed service name as a replacement for "z39.50". |
[Mark_H_Needleman] | [Mark_H_Needleman] | ||||||
z39.50 | 210 | tcp | ANSI Z39.50 | [Mark_H_Needleman] | [Mark_H_Needleman] | This entry is an alias to "z39-50". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
z39-50 | 210 | udp | ANSI Z39.50 IANA assigned this well-formed service name as a replacement for "z39.50". |
[Mark_H_Needleman] | [Mark_H_Needleman] | ||||||
z39.50 | 210 | udp | ANSI Z39.50 | [Mark_H_Needleman] | [Mark_H_Needleman] | This entry is an alias to "z39-50". This entry is now historic, not usable for use with many common service discovery mechanisms. | |||||
imap3 | 220 | tcp | Interactive Mail Access Protocol v3 | [James_Rice] | [James_Rice] | ||||||
imap3 | 220 | udp | Interactive Mail Access Protocol v3 | [James_Rice] | [James_Rice] | ||||||
225-241 | Reserved | 2024-12-20 | [RFC1060] | ||||||||
dsp3270 | 246 | tcp | Display Systems Protocol | [Weldon_J_Showalter] | [Weldon_J_Showalter] | ||||||
dsp3270 | 246 | udp | Display Systems Protocol | [Weldon_J_Showalter] | [Weldon_J_Showalter] | ||||||
249-255 | Reserved | 2024-12-20 | [RFC1060] | ||||||||
openport | 260 | tcp | Openport | [John_Marland] | [John_Marland] | ||||||
openport | 260 | udp | Openport | [John_Marland] | [John_Marland] | ||||||
270 | tcp | Reserved | |||||||||
gist | 270 | udp | Q-mode encapsulation for GIST messages | [RFC5971] | |||||||
http-mgmt | 280 | tcp | http-mgmt | [Adrian_Pell] | [Adrian_Pell] | ||||||
http-mgmt | 280 | udp | http-mgmt | [Adrian_Pell] | [Adrian_Pell] | ||||||
288-307 | Unassigned | ||||||||||
novastorbakcup | 308 | tcp | Novastor Backup | [Brian_Dickman] | [Brian_Dickman] | ||||||
novastorbakcup | 308 | udp | Novastor Backup | [Brian_Dickman] | [Brian_Dickman] | ||||||
entrusttime | 309 | tcp | EntrustTime | [Peter_Whittaker] | [Peter_Whittaker] | ||||||
entrusttime | 309 | udp | EntrustTime | [Peter_Whittaker] | [Peter_Whittaker] | ||||||
bhmds | 310 | tcp | bhmds | [John_Kelly] | [John_Kelly] | ||||||
bhmds | 310 | udp | bhmds | [John_Kelly] | [John_Kelly] | ||||||
ptp-general | 320 | tcp | PTP General | [Kang_Lee] | [Kang_Lee] | 2010-07-27 | |||||
ptp-general | 320 | udp | PTP General | [Kang_Lee] | [Kang_Lee] | 2010-07-27 | |||||
rpki-rtr | 323 | tcp | Resource PKI to Router Protocol | [IESG] | [IETF_Chair] | [RFC6810] | |||||
rpki-rtr-tls | 324 | tcp | Resource PKI to Router Protocol over TLS | [IESG] | [IETF_Chair] | [RFC6810] | |||||
matip-type-a | 350 | tcp | MATIP Type A | [Alain_Robert] | [Alain_Robert] | [RFC2351] | |||||
matip-type-a | 350 | udp | MATIP Type A | [Alain_Robert] | [Alain_Robert] | [RFC2351] | |||||
359 | tcp | Reserved | 2023-11-16 | De-Assigned on 2023-11-16. | |||||||
359 | udp | Reserved | 2023-11-16 | De-Assigned on 2023-11-16. | |||||||
scoi2odialog | 360 | tcp | scoi2odialog | [Keith_Petley] | [Keith_Petley] | ||||||
scoi2odialog | 360 | udp | scoi2odialog | [Keith_Petley] | [Keith_Petley] | ||||||
codaauth2 | 370 | tcp | codaauth2 | [Robert_Watson] | [Robert_Watson] | ||||||
codaauth2 | 370 | udp | codaauth2 | [Robert_Watson] | [Robert_Watson] | ||||||
is99s | 380 | tcp | TIA/EIA/IS-99 modem server | [Frank_Quick] | [Frank_Quick] | ||||||
is99s | 380 | udp | TIA/EIA/IS-99 modem server | [Frank_Quick] | [Frank_Quick] | ||||||
uis | 390 | tcp | UIS | [Ed_Barron] | [Ed_Barron] | ||||||
uis | 390 | udp | UIS | [Ed_Barron] | [Ed_Barron] | ||||||
osb-sd | 400 | tcp | Oracle Secure Backup | [Steven_Wertheimer] | [Steven_Wertheimer] | 2008-06-06 | 2023-12-27 | Formerly was Workstation Solutions | |||
osb-sd | 400 | udp | Oracle Secure Backup | [Steven_Wertheimer] | [Steven_Wertheimer] | 2008-06-06 | 2023-12-27 | Formerly was Workstation Solutions | |||
ups | 401 | tcp | Uninterruptible Power Supply | [Charles_Bennett] | [Charles_Bennett] | 2008-08-29 | |||||
ups | 401 | udp | Uninterruptible Power Supply | [Charles_Bennett] | [Charles_Bennett] | 2008-08-29 | |||||
genie | 402 | tcp | Genie Protocol | [Mark_Hankin] | [Mark_Hankin] | ||||||
genie | 402 | udp | Genie Protocol | [Mark_Hankin] | [Mark_Hankin] | ||||||
decap | 403 | tcp | decap | ||||||||
decap | 403 | udp | decap | ||||||||
nced | 404 | tcp | nced | ||||||||
nced | 404 | udp | nced | ||||||||
ncld | 405 | tcp | ncld | [Richard_Jones] | [Richard_Jones] | ||||||
ncld | 405 | udp | ncld | [Richard_Jones] | [Richard_Jones] | ||||||
imsp | 406 | tcp | Interactive Mail Support Protocol | [John_Myers] | [John_Myers] | ||||||
imsp | 406 | udp | Interactive Mail Support Protocol | [John_Myers] | [John_Myers] | ||||||
timbuktu | 407 | tcp | Timbuktu | [Marc_Epard] | [Marc_Epard] | ||||||
timbuktu | 407 | udp | Timbuktu | [Marc_Epard] | [Marc_Epard] | ||||||
prm-sm | 408 | tcp | Prospero Resource Manager Sys. Man. | ||||||||
prm-sm | 408 | udp | Prospero Resource Manager Sys. Man. | ||||||||
prm-nm | 409 | tcp | Prospero Resource Manager Node Man. | [B_Clifford_Neuman] | [B_Clifford_Neuman] | ||||||
prm-nm | 409 | udp | Prospero Resource Manager Node Man. | [B_Clifford_Neuman] | [B_Clifford_Neuman] | ||||||
decladebug | 410 | tcp | DECLadebug Remote Debug Protocol | [Hewlett_Packard] | [Hewlett_Packard] | ||||||
decladebug | 410 | udp | DECLadebug Remote Debug Protocol | [Hewlett_Packard] | [Hewlett_Packard] | ||||||
smpte | 420 | tcp | SMPTE | [Si_Becker] | [Si_Becker] | ||||||
smpte | 420 | udp | SMPTE | [Si_Becker] | [Si_Becker] | ||||||
utmpsd | 430 | tcp | UTMPSD | ||||||||
utmpsd | 430 | udp | UTMPSD | ||||||||
sgcp | 440 | tcp | sgcp | [Marshall_Rose] | [Marshall_Rose] | ||||||
sgcp | 440 | udp | sgcp | [Marshall_Rose] | [Marshall_Rose] | ||||||
https | 443 | tcp | http protocol over TLS/SSL | [IESG] | [IETF_Chair] | 2021-10-01 | [RFC9110] | ||||
https | 443 | udp | http protocol over TLS/SSL | [IESG] | [IETF_Chair] | 2021-10-01 | [RFC9110] | ||||
https | 443 | sctp | HTTPS | [Randall_Stewart] | [Randall_Stewart] | 2022-02-07 | [RFC9260] | ||||
tserver | 450 | tcp | Computer Supported Telecomunication Applications | [Harvey_S_Schultz] | [Harvey_S_Schultz] | ||||||
tserver | 450 | udp | Computer Supported Telecomunication Applications | [Harvey_S_Schultz] | [Harvey_S_Schultz] | ||||||
skronk | 460 | tcp | skronk | [Henry_Strickland] | [Henry_Strickland] | ||||||
skronk | 460 | udp | skronk | [Henry_Strickland] | [Henry_Strickland] | ||||||
scx-proxy | 470 | tcp | scx-proxy | [Scott_Narveson] | [Scott_Narveson] | ||||||
scx-proxy | 470 | udp | scx-proxy | [Scott_Narveson] | [Scott_Narveson] | ||||||
iafdbase | 480 | tcp | iafdbase | [Rick_Yazwinski] | [Rick_Yazwinski] | ||||||
iafdbase | 480 | udp | iafdbase | [Rick_Yazwinski] | [Rick_Yazwinski] | ||||||
micom-pfs | 490 | tcp | micom-pfs | [David_Misunas] | [David_Misunas] | ||||||
micom-pfs | 490 | udp | micom-pfs | [David_Misunas] | [David_Misunas] | ||||||
isakmp | 500 | tcp | isakmp | [Mark_Schertler] | [Mark_Schertler] | ||||||
isakmp | 500 | udp | isakmp | [Mark_Schertler] | [Mark_Schertler] | ||||||
stmf | 501 | tcp | STMF | [Alan_Ungar] | [Alan_Ungar] | ||||||
stmf | 501 | udp | STMF | [Alan_Ungar] | [Alan_Ungar] | ||||||
mbap | 502 | tcp | Modbus Application Protocol | [modbus.org] | [Dennis_Dube] | 2014-06-10 | |||||
mbap | 502 | udp | Modbus Application Protocol | [modbus.org] | [Dennis_Dube] | 2014-06-10 | |||||
intrinsa | 503 | tcp | Intrinsa | [Robert_Ford] | [Robert_Ford] | ||||||
intrinsa | 503 | udp | Intrinsa | [Robert_Ford] | [Robert_Ford] | ||||||
citadel | 504 | tcp | citadel | [Art_Cancro] | [Art_Cancro] | ||||||
citadel | 504 | udp | citadel | [Art_Cancro] | [Art_Cancro] | ||||||
mailbox-lm | 505 | tcp | mailbox-lm | [Beverly_Moody] | [Beverly_Moody] | ||||||
mailbox-lm | 505 | udp | mailbox-lm | [Beverly_Moody] | [Beverly_Moody] | ||||||
ohimsrv | 506 | tcp | ohimsrv | [Scott_Powell] | [Scott_Powell] | ||||||
ohimsrv | 506 | udp | ohimsrv | [Scott_Powell] | [Scott_Powell] | ||||||
crs | 507 | tcp | crs | [Brad_Wright] | [Brad_Wright] | ||||||
crs | 507 | udp | crs | [Brad_Wright] | [Brad_Wright] |