PING www.wkd-zikao.com (104.21.80.1) 56(84) bytes of data.
64 bytes from 104.21.80.1 (104.21.80.1): icmp_seq=1 ttl=60 time=6.60 ms
64 bytes from 104.21.80.1 (104.21.80.1): icmp_seq=2 ttl=60 time=3.92 ms
64 bytes from 104.21.80.1 (104.21.80.1): icmp_seq=3 ttl=60 time=3.91 ms

--- www.wkd-zikao.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 3.919/4.815/6.605/1.265 ms