[root@yourhostingpro ~]# lsof -i :443
COMMAND  PID   USER   FD   TYPE      DEVICE SIZE NODE NAME
httpd   1895   root    4u  IPv4 -1220338157       TCP *:https (LISTEN)
httpd   2021 apache    4u  IPv4 -1220338157       TCP *:https (LISTEN)
httpd   2022 apache    4u  IPv4 -1220338157       TCP *:https (LISTEN)
httpd   7586 apache    4u  IPv4 -1220338157       TCP *:https (LISTEN)

[root@yourhostingpro ~]# lsof -i :993 
COMMAND  PID USER   FD   TYPE      DEVICE SIZE NODE NAME
xinetd  1871 root    6u  IPv4 -1220338440       TCP *:imaps (LISTEN)
[root@yourhostingpro ~]#