Nmap scan report for renrening.com (121.41.177.137)
Host is up (0.16s latency).
Not shown: 989 filtered tcp ports (no-response), 1 filtered tcp ports (admin-prohibited)
PORT      STATE  SERVICE
21/tcp    closed ftp
22/tcp    closed ssh
80/tcp    open   http
443/tcp   closed https
3389/tcp  closed ms-wbt-server
5555/tcp  open   freeciv
55055/tcp closed unknown
55056/tcp closed unknown
55555/tcp closed unknown
55600/tcp closed unknown

Nmap done: 1 IP address (1 host up) scanned in 9.55 seconds