% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014 # NAME docker-port - List port mappings for the CONTAINER, or lookup the public-facing port that is NAT-ed to the PRIVATE_PORT # SYNOPSIS **docker port** [**--help**] CONTAINER [PRIVATE_PORT[/PROTO]] # DESCRIPTION List port mappings for the CONTAINER, or lookup the public-facing port that is NAT-ed to the PRIVATE_PORT # OPTIONS **--help** Print usage statement # EXAMPLES # docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES b650456536c7 busybox:latest top 54 minutes ago Up 54 minutes 0.0.0.0:1234->9876/tcp, 0.0.0.0:4321->7890/tcp test ## Find out all the ports mapped # docker port test 7890/tcp -> 0.0.0.0:4321 9876/tcp -> 0.0.0.0:1234 ## Find out a specific mapping # docker port test 7890/tcp 0.0.0.0:4321 # docker port test 7890 0.0.0.0:4321 ## An example showing error for non-existent mapping # docker port test 7890/udp 2014/06/24 11:53:36 Error: No public port '7890/udp' published for test # HISTORY April 2014, Originally compiled by William Henry (whenry at redhat dot com) June 2014, updated by Sven Dowideit November 2014, updated by Sven Dowideit