PING web20vn.com--www.qianghuawangye.com (154.89.87.81) 56(84) bytes of data.
64 bytes from 154.89.87.81 (154.89.87.81): icmp_seq=1 ttl=55 time=247 ms
64 bytes from 154.89.87.81 (154.89.87.81): icmp_seq=2 ttl=55 time=247 ms
64 bytes from 154.89.87.81 (154.89.87.81): icmp_seq=3 ttl=55 time=247 ms

--- web20vn.com--www.qianghuawangye.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 247.316/247.421/247.606/0.131 ms