PING dz-www.sh12333.icoc.cc (172.67.159.193) 56(84) bytes of data.
64 bytes from 172.67.159.193 (172.67.159.193): icmp_seq=1 ttl=59 time=4.95 ms
64 bytes from 172.67.159.193 (172.67.159.193): icmp_seq=2 ttl=59 time=4.65 ms
64 bytes from 172.67.159.193 (172.67.159.193): icmp_seq=3 ttl=59 time=4.59 ms

--- dz-www.sh12333.icoc.cc ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.599/4.736/4.959/0.177 ms