Port 646 is an IANA System Port assigned to ldp (LDP) over TCP and UDP.
- Port: 646
- Service ldp: TCP, UDP — LDP
- Range: System Ports (0–1023)
Document v1 · published by Koskamo · updated 2026-10-04
Port 646 is an IANA System Port assigned to ldp (LDP) over TCP and UDP.