PING www.pmpsjtu.com (172.67.129.250) 56(84) bytes of data.
64 bytes from 172.67.129.250 (172.67.129.250): icmp_seq=1 ttl=59 time=4.91 ms
64 bytes from 172.67.129.250 (172.67.129.250): icmp_seq=2 ttl=59 time=4.67 ms
64 bytes from 172.67.129.250 (172.67.129.250): icmp_seq=3 ttl=59 time=4.67 ms

--- www.pmpsjtu.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.671/4.751/4.911/0.137 ms