PING donguri-kobo.jp (18.239.83.60) 56(84) bytes of data.
64 bytes from server-18-239-83-60.ams58.r.cloudfront.net (18.239.83.60): icmp_seq=1
ttl=251 time=5.87 ms
64 bytes from server-18-239-83-60.ams58.r.cloudfront.net (18.239.83.60): icmp_seq=2
ttl=251 time=3.92 ms
64 bytes from server-18-239-83-60.ams58.r.cloudfront.net (18.239.83.60): icmp_seq=3
ttl=251 time=3.97 ms

--- donguri-kobo.jp ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 3.922/4.589/5.870/0.906 ms