PING itcomm.co.kr (217.21.65.205) 56(84) bytes of data.
64 bytes from 217.21.65.205 (217.21.65.205): icmp_seq=1 ttl=52 time=148 ms
64 bytes from 217.21.65.205 (217.21.65.205): icmp_seq=2 ttl=52 time=150 ms
64 bytes from 217.21.65.205 (217.21.65.205): icmp_seq=3 ttl=52 time=149 ms

--- itcomm.co.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 148.683/149.270/150.004/0.707 ms