PING datalogger.co.kr (158.247.253.26) 56(84) bytes of data.
64 bytes from 158-247-253-26.constant.com (158.247.253.26): icmp_seq=1 ttl=56 time=274 ms
64 bytes from 158-247-253-26.constant.com (158.247.253.26): icmp_seq=2 ttl=56 time=274 ms
64 bytes from 158-247-253-26.constant.com (158.247.253.26): icmp_seq=3 ttl=56 time=274 ms

--- datalogger.co.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 274.303/274.473/274.706/0.170 ms