Port 209 — qmtp

Well-known port 209 (tcp/udp): The Quick Mail Transfer Protocol. Service name: qmtp.

port kind port status standard verification verified tier A iana-registry-row@1

registry record

value: 209

Service Name	qmtp
Port Number	209
Transport Protocol	tcp
Description	The Quick Mail Transfer Protocol
Assignee	[D_J_Bernstein]
Contact	[D_J_Bernstein]
Registration Date
Modification Date	2018-04-05
Reference
Service Code
Unauthorized Use Reported
Assignment Notes

source: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
version: IANA registry, Last-Modified: Fri, 29 May 2026 01:11:28 GMT
retrieved: 2026-05-29 · updated: 2026-05-29

agent: curl -H 'accept: application/json' wire.phall.io/port/209 or /port/209.json