PING www.acoc.co.kr (114.207.112.78) 56(84) bytes of data.
64 bytes from 114-207-112-78.tongkni.co.kr (114.207.112.78): icmp_seq=1 ttl=49 time=267 ms
64 bytes from 114-207-112-78.tongkni.co.kr (114.207.112.78): icmp_seq=2 ttl=49 time=267 ms
64 bytes from 114-207-112-78.tongkni.co.kr (114.207.112.78): icmp_seq=3 ttl=49 time=267 ms

--- www.acoc.co.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 267.116/267.308/267.625/0.225 ms