PING www.lunwenwx.com (104.21.82.4) 56(84) bytes of data.
64 bytes from 104.21.82.4 (104.21.82.4): icmp_seq=1 ttl=60 time=5.28 ms
64 bytes from 104.21.82.4 (104.21.82.4): icmp_seq=2 ttl=60 time=4.94 ms
64 bytes from 104.21.82.4 (104.21.82.4): icmp_seq=3 ttl=60 time=5.07 ms

--- www.lunwenwx.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.943/5.099/5.282/0.162 ms