Nmap scan report for richong.com (116.62.163.49)
Host is up (0.18s latency).
Not shown: 891 filtered tcp ports (no-response), 106 closed tcp ports (reset)
PORT      STATE SERVICE
80/tcp    open  http
443/tcp   open  https
30000/tcp open  ndmps

Nmap done: 1 IP address (1 host up) scanned in 17.89 seconds