PING 29.00ok.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=260 ms
64 bytes from 121.88.5.121 (121.88.5.121): icmp_seq=2 ttl=49 time=259 ms
64 bytes from 121.88.5.121 (121.88.5.121): icmp_seq=3 ttl=49 time=259 ms

--- 29.00ok.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 259.915/260.138/260.545/0.506 ms