PING ntt.edu.vn (104.18.20.240) 56(84) bytes of data.
64 bytes from 104.18.20.240 (104.18.20.240): icmp_seq=1 ttl=59 time=5.31 ms
64 bytes from 104.18.20.240 (104.18.20.240): icmp_seq=2 ttl=59 time=5.02 ms
64 bytes from 104.18.20.240 (104.18.20.240): icmp_seq=3 ttl=59 time=4.99 ms

--- ntt.edu.vn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.994/5.108/5.310/0.164 ms