Well-known ports (IANA registry)

IANA System Ports (0–1023) from the IANA Service Name and Transport Protocol Port Number Registry, one document per port with an assigned service name. Each lists the registered service names, transport protocols, descriptions, and references as IANA records them.

Browse 686 documents Use with your agent

Documents

Showing 649–672 of 686 documents

Document	Version
Port 873 (rsync) Port 873 is an IANA System Port assigned to rsync (rsync) over TCP and UDP.	v1
Port 88 (kerberos) Port 88 is an IANA System Port assigned to kerberos (Kerberos) over TCP and UDP.	v1
Port 886 (iclcnet-locate) Port 886 is an IANA System Port assigned to iclcnet-locate (ICL coNETion locate server) over TCP and UDP.	v1
Port 887 (iclcnet-svinfo, iclcnet_svinfo) Port 887 is an IANA System Port assigned to iclcnet-svinfo and iclcnet_svinfo over TCP and UDP.	v1
Port 888 (accessbuilder, cddbp) Port 888 is an IANA System Port assigned to accessbuilder and cddbp over TCP and UDP.	v1
Port 89 (su-mit-tg) Port 89 is an IANA System Port assigned to su-mit-tg (SU/MIT Telnet Gateway) over TCP and UDP.	v1
Port 9 (discard) Port 9 is an IANA System Port assigned to discard (Discard) over TCP, UDP, SCTP, and DCCP.	v1
Port 90 (dnsix) Port 90 is an IANA System Port assigned to dnsix (DNSIX Securit Attribute Token Map) over TCP and UDP.	v1
Port 900 (omginitialrefs) Port 900 is an IANA System Port assigned to omginitialrefs (OMG Initial Refs) over TCP and UDP.	v1
Port 901 (smpnameres) Port 901 is an IANA System Port assigned to smpnameres (SMPNAMERES) over TCP and UDP.	v1
Port 902 (ideafarm-door) Port 902 is an IANA System Port assigned to ideafarm-door over TCP and UDP.	v1
Port 903 (ideafarm-panic) Port 903 is an IANA System Port assigned to ideafarm-panic over TCP and UDP.	v1
Port 91 (mit-dov) Port 91 is an IANA System Port assigned to mit-dov (MIT Dover Spooler) over TCP and UDP.	v1
Port 910 (kink) Port 910 is an IANA System Port assigned to kink (Kerberized Internet Negotiation of Keys (KINK)) over TCP and UDP.	v1
Port 911 (xact-backup) Port 911 is an IANA System Port assigned to xact-backup (xact-backup) over TCP and UDP.	v1
Port 912 (apex-mesh) Port 912 is an IANA System Port assigned to apex-mesh (APEX relay-relay service) over TCP and UDP.	v1
Port 913 (apex-edge) Port 913 is an IANA System Port assigned to apex-edge (APEX endpoint-relay service) over TCP and UDP.	v1
Port 914 (rift-lies) Port 914 is an IANA System Port assigned to rift-lies (Routing in Fat Trees Link Information Element) over UDP.	v1
Port 915 (rift-ties) Port 915 is an IANA System Port assigned to rift-ties (Routing in Fat Trees Topology Information Element) over UDP.	v1
Port 92 (npp) Port 92 is an IANA System Port assigned to npp (Network Printing Protocol) over TCP and UDP.	v1
Port 93 (dcp) Port 93 is an IANA System Port assigned to dcp (Device Control Protocol) over TCP and UDP.	v1
Port 94 (objcall) Port 94 is an IANA System Port assigned to objcall (Tivoli Object Dispatcher) over TCP and UDP.	v1
Port 95 (supdup) Port 95 is an IANA System Port assigned to supdup (SUPDUP) over TCP and UDP.	v1
Port 953 (rndc) Port 953 is an IANA System Port assigned to rndc (BIND9 remote name daemon controller) over TCP.	v1

Source, review, and usage

Published on Koskamo by: Koskamo
Version: 687
Documents: 686 documents
Reviewed: 2026-10-04
Last approved change: 2026-10-04
Agent lookups: 2 in the last 90 days
Reuse: IANA Service Name and Transport Protocol Port Number Registry (iana.org/assignments/service-names-port-numbers), system ports 0-1023; registry data reproduced verbatim with references
Review status: Published by Koskamo; proposed revisions require Koskamo approval

Original sources are linked on each document. Owner approval records a publishing decision; it does not imply independent fact checking.

Use this dataset from an agent

Agents can query it without an account. POST to /api/v1/retrieve, or connect an MCP client and call koskamo_retrieve with dataset: "well-known-ports".

Set up your agent Read documents as JSON

The JSON endpoint returns document text and source links in pages. Use limit and offset to retrieve more records; total gives the dataset size.

retrieve request

curl --fail-with-body 'https://koskamo.com/api/v1/retrieve' -H 'Content-Type: application/json' --data-raw '{"query":"well-known-ports","dataset":"well-known-ports","top_k":3}'

Change history

Every change that reached this dataset. Proposals from contributors land only after Koskamo approves them.

Published by Koskamo2026-10-04
Port 1022 (exp2) · v1
Published by Koskamo2026-10-04
Port 1021 (exp1) · v1
Published by Koskamo2026-10-04
Port 1010 (surf) · v1
Published by Koskamo2026-10-04
Port 1001 (webpush) · v1
Published by Koskamo2026-10-04
Port 1000 (cadlock2) · v1
Published by Koskamo2026-10-04
Port 999 (garcon, applix, puprouter) · v1
Published by Koskamo2026-10-04
Port 998 (busboy, puparp) · v1
Published by Koskamo2026-10-04
Port 997 (maitrd) · v1
Published by Koskamo2026-10-04
Port 996 (vsinet) · v1
Published by Koskamo2026-10-04
Port 995 (pop3s) · v1