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 217–240 of 686 documents

Document	Version
Port 37 (time) Port 37 is an IANA System Port assigned to time (Time) over TCP and UDP.	v1
Port 370 (codaauth2) Port 370 is an IANA System Port assigned to codaauth2 (codaauth2) over TCP and UDP.	v1
Port 371 (clearcase) Port 371 is an IANA System Port assigned to clearcase (Clearcase) over TCP and UDP.	v1
Port 372 (ulistproc) Port 372 is an IANA System Port assigned to ulistproc (ListProcessor) over TCP and UDP.	v1
Port 373 (legent-1) Port 373 is an IANA System Port assigned to legent-1 (Legent Corporation) over TCP and UDP.	v1
Port 374 (legent-2) Port 374 is an IANA System Port assigned to legent-2 (Legent Corporation) over TCP and UDP.	v1
Port 375 (hassle) Port 375 is an IANA System Port assigned to hassle (Hassle) over TCP and UDP.	v1
Port 376 (nip) Port 376 is an IANA System Port assigned to nip (Amiga Envoy Network Inquiry Protocol) over TCP and UDP.	v1
Port 377 (tnETOS) Port 377 is an IANA System Port assigned to tnETOS (NEC Corporation) over TCP and UDP.	v1
Port 378 (dsETOS) Port 378 is an IANA System Port assigned to dsETOS (NEC Corporation) over TCP and UDP.	v1
Port 379 (is99c) Port 379 is an IANA System Port assigned to is99c (TIA/EIA/IS-99 modem client) over TCP and UDP.	v1
Port 38 (rap) Port 38 is an IANA System Port assigned to rap (Route Access Protocol) over TCP and UDP.	v1
Port 380 (is99s) Port 380 is an IANA System Port assigned to is99s (TIA/EIA/IS-99 modem server) over TCP and UDP.	v1
Port 381 (hp-collector) Port 381 is an IANA System Port assigned to hp-collector (hp performance data collector) over TCP and UDP.	v1
Port 382 (hp-managed-node) Port 382 is an IANA System Port assigned to hp-managed-node (hp performance data managed node) over TCP and UDP.	v1
Port 383 (hp-alarm-mgr) Port 383 is an IANA System Port assigned to hp-alarm-mgr (hp performance data alarm manager) over TCP and UDP.	v1
Port 384 (arns) Port 384 is an IANA System Port assigned to arns (A Remote Network Server System) over TCP and UDP.	v1
Port 385 (ibm-app) Port 385 is an IANA System Port assigned to ibm-app (IBM Application) over TCP and UDP.	v1
Port 386 (asa) Port 386 is an IANA System Port assigned to asa (ASA Message Router Object Def.) over TCP and UDP.	v1
Port 387 (aurp) Port 387 is an IANA System Port assigned to aurp (Appletalk Update-Based Routing Pro.) over TCP and UDP.	v1
Port 388 (unidata-ldm) Port 388 is an IANA System Port assigned to unidata-ldm (Unidata LDM) over TCP and UDP.	v1
Port 389 (ldap) Port 389 is an IANA System Port assigned to ldap (Lightweight Directory Access Protocol) over TCP and UDP.	v1
Port 39 (rlp) Port 39 is an IANA System Port assigned to rlp (Resource Location Protocol) over TCP and UDP.	v1
Port 390 (uis) Port 390 is an IANA System Port assigned to uis (UIS) 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