PING www.jj512.com (104.21.29.251) 56(84) bytes of data.
64 bytes from 104.21.29.251 (104.21.29.251): icmp_seq=1 ttl=59 time=4.97 ms
64 bytes from 104.21.29.251 (104.21.29.251): icmp_seq=2 ttl=59 time=4.77 ms
64 bytes from 104.21.29.251 (104.21.29.251): icmp_seq=3 ttl=59 time=4.66 ms

--- www.jj512.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.666/4.805/4.975/0.128 ms