PING fossa.or.kr (61.100.184.220) 56(84) bytes of data.
64 bytes from m220.mailplug.co.kr (61.100.184.220): icmp_seq=1 ttl=54 time=262 ms
64 bytes from m220.mailplug.co.kr (61.100.184.220): icmp_seq=2 ttl=54 time=261 ms
64 bytes from m220.mailplug.co.kr (61.100.184.220): icmp_seq=3 ttl=54 time=262 ms

--- fossa.or.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2184ms
rtt min/avg/max/mdev = 261.973/262.255/262.693/0.669 ms