PING tailieu.thietkeweb.vn (123.30.208.53) 56(84) bytes of data.
64 bytes from static.vnpt.vn (123.30.208.53): icmp_seq=1 ttl=57 time=252 ms
64 bytes from static.vnpt.vn (123.30.208.53): icmp_seq=2 ttl=57 time=250 ms
64 bytes from static.vnpt.vn (123.30.208.53): icmp_seq=3 ttl=57 time=250 ms

--- tailieu.thietkeweb.vn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 250.692/251.458/252.914/1.181 ms