PING www.thebookshelfoperation.com (104.21.22.195) 56(84) bytes of data.
64 bytes from 104.21.22.195 (104.21.22.195): icmp_seq=1 ttl=60 time=5.79 ms
64 bytes from 104.21.22.195 (104.21.22.195): icmp_seq=2 ttl=60 time=4.34 ms
64 bytes from 104.21.22.195 (104.21.22.195): icmp_seq=3 ttl=60 time=4.32 ms

--- www.thebookshelfoperation.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.320/4.819/5.792/0.688 ms