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 505–528 of 686 documents

Document	Version
Port 638 (mcns-sec) Port 638 is an IANA System Port assigned to mcns-sec (mcns-sec) over TCP and UDP.	v1
Port 639 (msdp) Port 639 is an IANA System Port assigned to msdp (MSDP) over TCP and UDP.	v1
Port 64 (covia) Port 64 is an IANA System Port assigned to covia (Communications Integrator (CI)) over TCP and UDP.	v1
Port 640 (entrust-sps) Port 640 is an IANA System Port assigned to entrust-sps (entrust-sps) over TCP and UDP.	v1
Port 641 (repcmd) Port 641 is an IANA System Port assigned to repcmd (repcmd) over TCP and UDP.	v1
Port 642 (esro-emsdp) Port 642 is an IANA System Port assigned to esro-emsdp (ESRO-EMSDP V1.3) over TCP and UDP.	v1
Port 643 (sanity) Port 643 is an IANA System Port assigned to sanity (SANity) over TCP and UDP.	v1
Port 644 (dwr) Port 644 is an IANA System Port assigned to dwr (dwr) over TCP and UDP.	v1
Port 645 (pssc) Port 645 is an IANA System Port assigned to pssc (PSSC) over TCP and UDP.	v1
Port 646 (ldp) Port 646 is an IANA System Port assigned to ldp (LDP) over TCP and UDP.	v1
Port 647 (dhcp-failover) Port 647 is an IANA System Port assigned to dhcp-failover (DHCP Failover) over TCP and UDP.	v1
Port 648 (rrp) Port 648 is an IANA System Port assigned to rrp (Registry Registrar Protocol (RRP)) over TCP and UDP.	v1
Port 649 (cadview-3d) Port 649 is an IANA System Port assigned to cadview-3d (Cadview-3d - streaming 3d models over the internet) over TCP and UDP.	v1
Port 65 (tacacs-ds) Port 65 is an IANA System Port assigned to tacacs-ds (TACACS-Database Service) over TCP and UDP.	v1
Port 650 (obex) Port 650 is an IANA System Port assigned to obex (OBEX) over TCP and UDP.	v1
Port 651 (ieee-mms) Port 651 is an IANA System Port assigned to ieee-mms (IEEE MMS) over TCP and UDP.	v1
Port 652 (hello-port) Port 652 is an IANA System Port assigned to hello-port (HELLO_PORT) over TCP and UDP.	v1
Port 653 (repscmd) Port 653 is an IANA System Port assigned to repscmd (RepCmd) over TCP and UDP.	v1
Port 654 (aodv) Port 654 is an IANA System Port assigned to aodv (AODV) over TCP and UDP.	v1
Port 655 (tinc) Port 655 is an IANA System Port assigned to tinc (TINC) over TCP and UDP.	v1
Port 656 (spmp) Port 656 is an IANA System Port assigned to spmp (SPMP) over TCP and UDP.	v1
Port 657 (rmc) Port 657 is an IANA System Port assigned to rmc (RMC) over TCP and UDP.	v1
Port 658 (tenfold) Port 658 is an IANA System Port assigned to tenfold (TenFold) over TCP and UDP.	v1
Port 66 (sql-net, sqlnet) Port 66 is an IANA System Port assigned to sql-net and sqlnet 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