PING ccenter.yru.ac.th (172.67.74.246) 56(84) bytes of data.
64 bytes from 172.67.74.246 (172.67.74.246): icmp_seq=1 ttl=60 time=5.91 ms
64 bytes from 172.67.74.246 (172.67.74.246): icmp_seq=2 ttl=60 time=4.31 ms
64 bytes from 172.67.74.246 (172.67.74.246): icmp_seq=3 ttl=60 time=4.28 ms

--- ccenter.yru.ac.th ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.287/4.841/5.918/0.763 ms