PING hyunsu.com (104.21.68.149) 56(84) bytes of data.
64 bytes from 104.21.68.149 (104.21.68.149): icmp_seq=1 ttl=60 time=6.56 ms
64 bytes from 104.21.68.149 (104.21.68.149): icmp_seq=2 ttl=60 time=4.62 ms
64 bytes from 104.21.68.149 (104.21.68.149): icmp_seq=3 ttl=60 time=4.63 ms

--- hyunsu.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.628/5.276/6.569/0.914 ms