PING a.mb.cn (47.75.37.155) 56(84) bytes of data.
64 bytes from 47.75.37.155 (47.75.37.155): icmp_seq=1 ttl=43 time=289 ms
64 bytes from 47.75.37.155 (47.75.37.155): icmp_seq=2 ttl=43 time=289 ms
64 bytes from 47.75.37.155 (47.75.37.155): icmp_seq=3 ttl=43 time=289 ms

--- a.mb.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 289.423/289.547/289.643/0.448 ms