PING www.jf7817.com (104.21.94.172) 56(84) bytes of data.
64 bytes from 104.21.94.172 (104.21.94.172): icmp_seq=1 ttl=60 time=5.76 ms
64 bytes from 104.21.94.172 (104.21.94.172): icmp_seq=2 ttl=60 time=4.16 ms
64 bytes from 104.21.94.172 (104.21.94.172): icmp_seq=3 ttl=60 time=4.18 ms

--- www.jf7817.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.162/4.701/5.761/0.749 ms