PING 2010-smscold.cn.gongchang.com (106.52.20.19) 56(84) bytes of data.
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=1 ttl=52 time=248 ms
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=2 ttl=52 time=253 ms
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=3 ttl=52 time=248 ms

--- 2010-smscold.cn.gongchang.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 248.516/250.128/253.195/2.207 ms