PING www.junmin.or.kr (221.141.3.55) 56(84) bytes of data.
64 bytes from bugokhawaii.co.kr (221.141.3.55): icmp_seq=1 ttl=46 time=253 ms
64 bytes from bugokhawaii.co.kr (221.141.3.55): icmp_seq=2 ttl=46 time=251 ms
64 bytes from bugokhawaii.co.kr (221.141.3.55): icmp_seq=3 ttl=46 time=251 ms

--- www.junmin.or.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 251.482/252.242/253.739/1.135 ms