PING www.srfhui.com (104.21.48.117) 56(84) bytes of data.
64 bytes from 104.21.48.117 (104.21.48.117): icmp_seq=1 ttl=60 time=6.34 ms
64 bytes from 104.21.48.117 (104.21.48.117): icmp_seq=2 ttl=60 time=4.10 ms
64 bytes from 104.21.48.117 (104.21.48.117): icmp_seq=3 ttl=60 time=4.22 ms

--- www.srfhui.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 4.100/4.891/6.346/1.031 ms