PING com-www.hkpifa.cn (54.156.158.84) 56(84) bytes of data.
64 bytes from ec2-54-156-158-84.compute-1.amazonaws.com (54.156.158.84): icmp_seq=1 ttl=60
time=87.3 ms
64 bytes from ec2-54-156-158-84.compute-1.amazonaws.com (54.156.158.84): icmp_seq=2 ttl=60
time=106 ms
64 bytes from ec2-54-156-158-84.compute-1.amazonaws.com (54.156.158.84): icmp_seq=3 ttl=60
time=144 ms

--- com-www.hkpifa.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 87.306/112.782/144.546/23.788 ms