PING dz-www.yifuqiankun.com (104.21.61.165) 56(84) bytes of data.
64 bytes from 104.21.61.165 (104.21.61.165): icmp_seq=1 ttl=59 time=5.13 ms
64 bytes from 104.21.61.165 (104.21.61.165): icmp_seq=2 ttl=59 time=4.87 ms
64 bytes from 104.21.61.165 (104.21.61.165): icmp_seq=3 ttl=59 time=5.07 ms

--- dz-www.yifuqiankun.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.875/5.025/5.131/0.136 ms