PING web20vn.com--www.rchengxi.com (104.21.18.113) 56(84) bytes of data.
64 bytes from 104.21.18.113 (104.21.18.113): icmp_seq=1 ttl=60 time=5.02 ms
64 bytes from 104.21.18.113 (104.21.18.113): icmp_seq=2 ttl=60 time=5.06 ms
64 bytes from 104.21.18.113 (104.21.18.113): icmp_seq=3 ttl=60 time=5.05 ms

--- web20vn.com--www.rchengxi.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 5.020/5.045/5.062/0.018 ms