PING web20vn.com--www.shihui658.icoc.cc (104.21.9.108) 56(84) bytes of data.
64 bytes from 104.21.9.108 (104.21.9.108): icmp_seq=1 ttl=59 time=4.81 ms
64 bytes from 104.21.9.108 (104.21.9.108): icmp_seq=2 ttl=59 time=4.68 ms
64 bytes from 104.21.9.108 (104.21.9.108): icmp_seq=3 ttl=59 time=4.95 ms

--- web20vn.com--www.shihui658.icoc.cc ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.682/4.816/4.954/0.136 ms