Which netstat command show ports?

netstat -a shows all active connections AND listening ports combined, not exclusively listening ports.

The netstat -l (--listening) option restricts output to sockets that are actively listening for incoming connections, directly showing which ports are open and waiting for traffic. This is more targeted than other options because it isolates listening ports without mixing in established or other connection states.

netstat -v enables verbose mode to add extra detail to existing output; it does not filter or display ports specifically.

netstat -g displays multicast group membership information and has no relationship to port listings.