UNIX list process listening on a port

vcaruso@zeus: $ netstat -anp | grep 44499
udp 0 0 0.0.0.0:44499 0.0.0.0:* 28282/exec.bin

vcaruso@zeus: $ lsof -i -n | grep 44499
exec.bin 28282 vcaruso 77u IPv4 25738300 0t0 UDP *:44499