PING jc1580.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=4.30 ms
64 bytes from 104.21.80.1 (104.21.80.1): icmp_seq=2 ttl=60 time=4.19 ms
64 bytes from 104.21.80.1 (104.21.80.1): icmp_seq=3 ttl=60 time=4.27 ms

--- jc1580.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 4.190/4.255/4.302/0.089 ms