PING www.zmdao.com (103.39.210.183) 56(84) bytes of data.
64 bytes from 103.39.210.183 (103.39.210.183): icmp_seq=1 ttl=53 time=258 ms
64 bytes from 103.39.210.183 (103.39.210.183): icmp_seq=2 ttl=53 time=256 ms
64 bytes from 103.39.210.183 (103.39.210.183): icmp_seq=3 ttl=53 time=256 ms

--- www.zmdao.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 256.462/257.208/258.493/0.912 ms