PING www.quantrimang.com.vn (104.21.70.4) 56(84) bytes of data.
64 bytes from 104.21.70.4 (104.21.70.4): icmp_seq=1 ttl=60 time=4.14 ms
64 bytes from 104.21.70.4 (104.21.70.4): icmp_seq=2 ttl=60 time=4.01 ms
64 bytes from 104.21.70.4 (104.21.70.4): icmp_seq=3 ttl=60 time=4.14 ms

--- www.quantrimang.com.vn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 4.016/4.100/4.143/0.079 ms