PING all.offcn.com.ctadns.cn (14.29.101.169) 56(84) bytes of data.
64 bytes from 14.29.101.169 (14.29.101.169): icmp_seq=1 ttl=53 time=311 ms
64 bytes from 14.29.101.169 (14.29.101.169): icmp_seq=2 ttl=53 time=308 ms
64 bytes from 14.29.101.169 (14.29.101.169): icmp_seq=3 ttl=53 time=311 ms

--- all.offcn.com.ctadns.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2924ms
rtt min/avg/max/mdev = 308.995/310.828/311.966/1.385 ms