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 1–24 of 686 documents

Document	Version
Port 1 (tcpmux) Port 1 is an IANA System Port assigned to tcpmux (TCP Port Service Multiplexer) over TCP and UDP.	v1
Port 1000 (cadlock2) Port 1000 is an IANA System Port assigned to cadlock2 over TCP and UDP.	v1
Port 1001 (webpush) Port 1001 is an IANA System Port assigned to webpush (HTTP Web Push) over TCP.	v1
Port 101 (hostname) Port 101 is an IANA System Port assigned to hostname (NIC Host Name Server) over TCP and UDP.	v1
Port 1010 (surf) Port 1010 is an IANA System Port assigned to surf (surf) over TCP and UDP.	v1
Port 102 (iso-tsap) Port 102 is an IANA System Port assigned to iso-tsap (ISO-TSAP Class 0) over TCP and UDP.	v1
Port 1021 (exp1) Port 1021 is an IANA System Port assigned to exp1 (RFC3692-style Experiment 1) over TCP, UDP, SCTP, and DCCP.	v1
Port 1022 (exp2) Port 1022 is an IANA System Port assigned to exp2 (RFC3692-style Experiment 2) over TCP, UDP, SCTP, and DCCP.	v1
Port 103 (gppitnp) Port 103 is an IANA System Port assigned to gppitnp (Genesis Point-to-Point Trans Net) over TCP and UDP.	v1
Port 104 (acr-nema) Port 104 is an IANA System Port assigned to acr-nema (ACR-NEMA Digital Imag. & Comm. 300) over TCP and UDP.	v1
Port 105 (cso, csnet-ns) Port 105 is an IANA System Port assigned to cso and csnet-ns over TCP and UDP.	v1
Port 106 (3com-tsmux) Port 106 is an IANA System Port assigned to 3com-tsmux (3COM-TSMUX) over TCP and UDP.	v1
Port 107 (rtelnet) Port 107 is an IANA System Port assigned to rtelnet (Remote Telnet Service) over TCP and UDP.	v1
Port 108 (snagas) Port 108 is an IANA System Port assigned to snagas (SNA Gateway Access Server) over TCP and UDP.	v1
Port 109 (pop2) Port 109 is an IANA System Port assigned to pop2 (Post Office Protocol - Version 2) over TCP and UDP.	v1
Port 11 (systat) Port 11 is an IANA System Port assigned to systat (Active Users) over TCP and UDP.	v1
Port 110 (pop3) Port 110 is an IANA System Port assigned to pop3 (Post Office Protocol - Version 3) over TCP and UDP.	v1
Port 111 (sunrpc) Port 111 is an IANA System Port assigned to sunrpc (SUN Remote Procedure Call) over TCP and UDP.	v1
Port 112 (mcidas) Port 112 is an IANA System Port assigned to mcidas (McIDAS Data Transmission Protocol) over TCP and UDP.	v1
Port 113 (ident, auth) Port 113 is an IANA System Port assigned to ident and auth over TCP and UDP.	v1
Port 115 (sftp) Port 115 is an IANA System Port assigned to sftp (Simple File Transfer Protocol) over TCP and UDP.	v1
Port 116 (ansanotify) Port 116 is an IANA System Port assigned to ansanotify (ANSA REX Notify) over TCP and UDP.	v1
Port 117 (uucp-path) Port 117 is an IANA System Port assigned to uucp-path (UUCP Path Service) over TCP and UDP.	v1
Port 118 (sqlserv) Port 118 is an IANA System Port assigned to sqlserv (SQL Services) 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