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 169–192 of 686 documents

Document	Version
Port 287 (k-block) Port 287 is an IANA System Port assigned to k-block (K-BLOCK) over TCP and UDP.	v1
Port 29 (msg-icp) Port 29 is an IANA System Port assigned to msg-icp (MSG ICP) over TCP and UDP.	v1
Port 300 (tacacss) Port 300 is an IANA System Port assigned to tacacss (TLS Secure Login Host Protocol (TACACSS)) over TCP.	v1
Port 308 (novastorbakcup) Port 308 is an IANA System Port assigned to novastorbakcup (Novastor Backup) over TCP and UDP.	v1
Port 309 (entrusttime) Port 309 is an IANA System Port assigned to entrusttime (EntrustTime) over TCP and UDP.	v1
Port 31 (msg-auth) Port 31 is an IANA System Port assigned to msg-auth (MSG Authentication) over TCP and UDP.	v1
Port 310 (bhmds) Port 310 is an IANA System Port assigned to bhmds (bhmds) over TCP and UDP.	v1
Port 311 (asip-webadmin) Port 311 is an IANA System Port assigned to asip-webadmin (AppleShare IP WebAdmin) over TCP and UDP.	v1
Port 312 (vslmp) Port 312 is an IANA System Port assigned to vslmp (VSLMP) over TCP and UDP.	v1
Port 313 (magenta-logic) Port 313 is an IANA System Port assigned to magenta-logic (Magenta Logic) over TCP and UDP.	v1
Port 314 (opalis-robot) Port 314 is an IANA System Port assigned to opalis-robot (Opalis Robot) over TCP and UDP.	v1
Port 315 (dpsi) Port 315 is an IANA System Port assigned to dpsi (DPSI) over TCP and UDP.	v1
Port 316 (decauth) Port 316 is an IANA System Port assigned to decauth (decAuth) over TCP and UDP.	v1
Port 317 (zannet) Port 317 is an IANA System Port assigned to zannet (Zannet) over TCP and UDP.	v1
Port 318 (pkix-timestamp) Port 318 is an IANA System Port assigned to pkix-timestamp (PKIX TimeStamp) over TCP and UDP.	v1
Port 319 (ptp-event) Port 319 is an IANA System Port assigned to ptp-event (PTP Event) over TCP and UDP.	v1
Port 320 (ptp-general) Port 320 is an IANA System Port assigned to ptp-general (PTP General) over TCP and UDP.	v1
Port 321 (pip) Port 321 is an IANA System Port assigned to pip (PIP) over TCP and UDP.	v1
Port 322 (rtsps) Port 322 is an IANA System Port assigned to rtsps (RTSPS) over TCP and UDP.	v1
Port 323 (rpki-rtr) Port 323 is an IANA System Port assigned to rpki-rtr (Resource PKI to Router Protocol) over TCP.	v1
Port 324 (rpki-rtr-tls) Port 324 is an IANA System Port assigned to rpki-rtr-tls (Resource PKI to Router Protocol over TLS) over TCP.	v1
Port 33 (dsp) Port 33 is an IANA System Port assigned to dsp (Display Support Protocol) over TCP and UDP.	v1
Port 333 (texar) Port 333 is an IANA System Port assigned to texar (Texar Security Port) over TCP and UDP.	v1
Port 344 (pdap) Port 344 is an IANA System Port assigned to pdap (Prospero Data Access Protocol) 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