PING www.mobipdf.com (104.21.88.253) 56(84) bytes of data.
64 bytes from 104.21.88.253 (104.21.88.253): icmp_seq=1 ttl=60 time=5.09 ms
64 bytes from 104.21.88.253 (104.21.88.253): icmp_seq=2 ttl=60 time=4.84 ms
64 bytes from 104.21.88.253 (104.21.88.253): icmp_seq=3 ttl=60 time=4.78 ms

--- www.mobipdf.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.788/4.909/5.093/0.143 ms