PING afterschool.jne.go.kr (117.110.143.123) 56(84) bytes of data.
64 bytes from 117.110.143.123 (117.110.143.123): icmp_seq=1 ttl=113 time=255 ms
64 bytes from 117.110.143.123 (117.110.143.123): icmp_seq=2 ttl=113 time=255 ms
64 bytes from 117.110.143.123 (117.110.143.123): icmp_seq=3 ttl=113 time=255 ms

--- afterschool.jne.go.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 255.071/255.268/255.573/0.466 ms