Port 666 is an IANA System Port assigned to mdqs and doom over TCP and UDP.
- Port: 666
- Service mdqs: TCP, UDP
- Service doom: TCP, UDP — doom Id Software
- Range: System Ports (0–1023)
Document v1 · published by Koskamo · updated 2026-10-04
Port 666 is an IANA System Port assigned to mdqs and doom over TCP and UDP.