PING pro-agent.site.cdncenter.cn (103.112.28.92) 56(84) bytes of data.
64 bytes from 103.112.28.92 (103.112.28.92): icmp_seq=1 ttl=56 time=202 ms
64 bytes from 103.112.28.92 (103.112.28.92): icmp_seq=2 ttl=56 time=200 ms
64 bytes from 103.112.28.92 (103.112.28.92): icmp_seq=3 ttl=56 time=200 ms

--- pro-agent.site.cdncenter.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 200.008/200.927/202.747/1.337 ms