PING www.39591.com (104.21.18.127) 56(84) bytes of data.
64 bytes from 104.21.18.127 (104.21.18.127): icmp_seq=1 ttl=59 time=4.86 ms
64 bytes from 104.21.18.127 (104.21.18.127): icmp_seq=2 ttl=59 time=4.75 ms
64 bytes from 104.21.18.127 (104.21.18.127): icmp_seq=3 ttl=59 time=4.67 ms

--- www.39591.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 4.672/4.764/4.863/0.078 ms