PING www.lightcn.bombog.com (104.21.27.121) 56(84) bytes of data.
64 bytes from 104.21.27.121 (104.21.27.121): icmp_seq=1 ttl=60 time=4.71 ms
64 bytes from 104.21.27.121 (104.21.27.121): icmp_seq=2 ttl=60 time=4.19 ms
64 bytes from 104.21.27.121 (104.21.27.121): icmp_seq=3 ttl=60 time=4.13 ms

--- www.lightcn.bombog.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.137/4.349/4.719/0.262 ms