PING www.kentop.cn (104.21.43.233) 56(84) bytes of data.
64 bytes from 104.21.43.233 (104.21.43.233): icmp_seq=1 ttl=60 time=6.69 ms
64 bytes from 104.21.43.233 (104.21.43.233): icmp_seq=2 ttl=60 time=4.45 ms
64 bytes from 104.21.43.233 (104.21.43.233): icmp_seq=3 ttl=60 time=4.54 ms

--- www.kentop.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 4.458/5.229/6.690/1.036 ms