PING edu.viettel.vn (117.5.229.196) 56(84) bytes of data.
64 bytes from localhost (117.5.229.196): icmp_seq=1 ttl=247 time=273 ms
64 bytes from localhost (117.5.229.196): icmp_seq=2 ttl=247 time=273 ms
64 bytes from localhost (117.5.229.196): icmp_seq=3 ttl=247 time=273 ms

--- edu.viettel.vn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 273.210/273.322/273.395/0.434 ms