PING delsa.or.kr (211.255.23.42) 56(84) bytes of data.
64 bytes from 211.255.23.42 (211.255.23.42): icmp_seq=1 ttl=52 time=252 ms
64 bytes from 211.255.23.42 (211.255.23.42): icmp_seq=2 ttl=52 time=252 ms
64 bytes from 211.255.23.42 (211.255.23.42): icmp_seq=3 ttl=52 time=252 ms

--- delsa.or.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 252.296/252.407/252.545/0.589 ms