Starting Nmap 5.51 ( http://nmap.org ) at 2017-09-27 20:16 CST
Nmap scan report for gi.jk188.net (116.251.242.186)
Host is up (0.0035s latency).
rDNS record for 116.251.242.186: 116251242186.rapid-shield.com
PORT STATE SERVICE
80/tcp filtered http
Nmap done: 1 IP address (1 host up) scanned in 1.27 seconds
[root@DDS~]# nmap -p 81 gi.jinpaizhan.com
Starting Nmap 5.51 ( http://nmap.org ) at 2017-09-27 20:16 CST
Nmap scan report for gi.jinpaizhan.com (116.251.244.55)
Host is up (0.0037s latency).
rDNS record for 116.251.244.55: 11625124455.rapid-shield.com
PORT STATE SERVICE
81/tcp filtered hosts2-ns
Nmap done: 1 IP address (1 host up) scanned in 0.34 seconds