PING ip-www.yf883.icoc.cc (104.21.9.108) 56(84) bytes of data.
64 bytes from 104.21.9.108 (104.21.9.108): icmp_seq=1 ttl=59 time=5.30 ms
64 bytes from 104.21.9.108 (104.21.9.108): icmp_seq=2 ttl=59 time=5.14 ms
64 bytes from 104.21.9.108 (104.21.9.108): icmp_seq=3 ttl=59 time=5.19 ms

--- ip-www.yf883.icoc.cc ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2009ms
rtt min/avg/max/mdev = 5.146/5.213/5.305/0.106 ms