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 673–686 of 686 documents

Document	Version
Port 96 (dixie) Port 96 is an IANA System Port assigned to dixie (DIXIE Protocol Specification) over TCP and UDP.	v1
Port 97 (swift-rvf) Port 97 is an IANA System Port assigned to swift-rvf (Swift Remote Virtural File Protocol) over TCP and UDP.	v1
Port 98 (tacnews) Port 98 is an IANA System Port assigned to tacnews (TAC News) over TCP and UDP.	v1
Port 989 (ftps-data) Port 989 is an IANA System Port assigned to ftps-data (ftp protocol, data, over TLS/SSL) over TCP and UDP.	v1
Port 99 (metagram) Port 99 is an IANA System Port assigned to metagram (Metagram Relay) over TCP and UDP.	v1
Port 990 (ftps) Port 990 is an IANA System Port assigned to ftps (ftp protocol, control, over TLS/SSL) over TCP and UDP.	v1
Port 991 (nas) Port 991 is an IANA System Port assigned to nas (Netnews Administration System) over TCP and UDP.	v1
Port 992 (telnets) Port 992 is an IANA System Port assigned to telnets (telnet protocol over TLS/SSL) over TCP and UDP.	v1
Port 993 (imaps) Port 993 is an IANA System Port assigned to imaps (IMAP over TLS protocol) over TCP.	v1
Port 995 (pop3s) Port 995 is an IANA System Port assigned to pop3s over TCP and UDP.	v1
Port 996 (vsinet) Port 996 is an IANA System Port assigned to vsinet (vsinet) over TCP and UDP.	v1
Port 997 (maitrd) Port 997 is an IANA System Port assigned to maitrd over TCP and UDP.	v1
Port 998 (busboy, puparp) Port 998 is an IANA System Port assigned to busboy and puparp over TCP and UDP.	v1
Port 999 (garcon, applix, puprouter) Port 999 is an IANA System Port assigned to garcon, applix, and puprouter over TCP and UDP.	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