PING microbio.konkuk.ac.kr (203.252.142.217) 56(84) bytes of data.
64 bytes from ctl.konkuk.ac.kr (203.252.142.217): icmp_seq=1 ttl=50 time=270 ms
64 bytes from ctl.konkuk.ac.kr (203.252.142.217): icmp_seq=2 ttl=50 time=268 ms
64 bytes from ctl.konkuk.ac.kr (203.252.142.217): icmp_seq=3 ttl=50 time=268 ms

--- microbio.konkuk.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2456ms
rtt min/avg/max/mdev = 268.658/269.306/270.508/0.850 ms