PING j172.tw (104.21.19.137) 56(84) bytes of data.
64 bytes from 104.21.19.137 (104.21.19.137): icmp_seq=1 ttl=59 time=4.59 ms
64 bytes from 104.21.19.137 (104.21.19.137): icmp_seq=2 ttl=59 time=4.63 ms
64 bytes from 104.21.19.137 (104.21.19.137): icmp_seq=3 ttl=59 time=4.60 ms

--- j172.tw ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 4.599/4.613/4.637/0.057 ms