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 337–360 of 686 documents

Document	Version
Port 480 (iafdbase) Port 480 is an IANA System Port assigned to iafdbase (iafdbase) over TCP and UDP.	v1
Port 481 (ph) Port 481 is an IANA System Port assigned to ph (Ph service) over TCP and UDP.	v1
Port 482 (bgs-nsi) Port 482 is an IANA System Port assigned to bgs-nsi (bgs-nsi) over TCP and UDP.	v1
Port 483 (ulpnet) Port 483 is an IANA System Port assigned to ulpnet (ulpnet) over TCP and UDP.	v1
Port 484 (integra-sme) Port 484 is an IANA System Port assigned to integra-sme (Integra Software Management Environment) over TCP and UDP.	v1
Port 485 (powerburst) Port 485 is an IANA System Port assigned to powerburst (Air Soft Power Burst) over TCP and UDP.	v1
Port 486 (avian) Port 486 is an IANA System Port assigned to avian (avian) over TCP and UDP.	v1
Port 487 (saft) Port 487 is an IANA System Port assigned to saft (saft Simple Asynchronous File Transfer) over TCP and UDP.	v1
Port 488 (gss-http) Port 488 is an IANA System Port assigned to gss-http (gss-http) over TCP and UDP.	v1
Port 489 (nest-protocol) Port 489 is an IANA System Port assigned to nest-protocol (nest-protocol) over TCP and UDP.	v1
Port 49 (tacacs) Port 49 is an IANA System Port assigned to tacacs (Login Host Protocol (TACACS)) over TCP and UDP.	v1
Port 490 (micom-pfs) Port 490 is an IANA System Port assigned to micom-pfs (micom-pfs) over TCP and UDP.	v1
Port 491 (go-login) Port 491 is an IANA System Port assigned to go-login (go-login) over TCP and UDP.	v1
Port 492 (ticf-1) Port 492 is an IANA System Port assigned to ticf-1 (Transport Independent Convergence for FNA) over TCP and UDP.	v1
Port 493 (ticf-2) Port 493 is an IANA System Port assigned to ticf-2 (Transport Independent Convergence for FNA) over TCP and UDP.	v1
Port 494 (pov-ray) Port 494 is an IANA System Port assigned to pov-ray (POV-Ray) over TCP and UDP.	v1
Port 495 (intecourier) Port 495 is an IANA System Port assigned to intecourier (intecourier) over TCP and UDP.	v1
Port 496 (pim-rp-disc) Port 496 is an IANA System Port assigned to pim-rp-disc (PIM-RP-DISC) over TCP and UDP.	v1
Port 497 (retrospect) Port 497 is an IANA System Port assigned to retrospect (Retrospect backup and restore service) over TCP and UDP.	v1
Port 498 (siam) Port 498 is an IANA System Port assigned to siam (siam) over TCP and UDP.	v1
Port 499 (iso-ill) Port 499 is an IANA System Port assigned to iso-ill (ISO ILL Protocol) over TCP and UDP.	v1
Port 5 (rje) Port 5 is an IANA System Port assigned to rje (Remote Job Entry) over TCP and UDP.	v1
Port 50 (re-mail-ck) Port 50 is an IANA System Port assigned to re-mail-ck (Remote Mail Checking Protocol) over TCP and UDP.	v1
Port 500 (isakmp) Port 500 is an IANA System Port assigned to isakmp (isakmp) 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