Nmap scan report for richiner.com (117.50.137.220)
Host is up (0.18s latency).
Not shown: 995 filtered tcp ports (no-response)
PORT      STATE SERVICE
21/tcp    open  ftp
80/tcp    open  http
443/tcp   open  https
3389/tcp  open  ms-wbt-server
49154/tcp open  unknown

Nmap done: 1 IP address (1 host up) scanned in 12.37 seconds