PING 18.00ok.kr (121.88.5.121) 56(84) bytes of data.
64 bytes from 121.88.5.121 (121.88.5.121): icmp_seq=1 ttl=49 time=264 ms
64 bytes from 121.88.5.121 (121.88.5.121): icmp_seq=2 ttl=49 time=263 ms
64 bytes from 121.88.5.121 (121.88.5.121): icmp_seq=3 ttl=49 time=264 ms

--- 18.00ok.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2143ms
rtt min/avg/max/mdev = 263.974/264.361/264.926/0.408 ms