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# port
<!---MARKER_GEN_START-->
List port mappings or a specific mapping for the container
### Aliases
`docker container port`, `docker port`
<!---MARKER_GEN_END-->
## Examples
### Show all mapped ports
You can find out all the ports mapped by not specifying a `PRIVATE_PORT`, or
just a specific mapping:
```console
$ 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
$ docker port test
7890/tcp -> 0.0.0.0:4321
9876/tcp -> 0.0.0.0:1234
$ docker port test 7890/tcp
0.0.0.0:4321
$ docker port test 7890/udp
2014/06/24 11:53:36 Error: No public port '7890/udp' published for test
$ docker port test 7890
0.0.0.0:4321
```
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