PING letters.cz (37.46.210.132) 56(84) bytes of data.
64 bytes from kestrelcore.cz (37.46.210.132): icmp_seq=1 ttl=121 time=19.8 ms
64 bytes from kestrelcore.cz (37.46.210.132): icmp_seq=2 ttl=121 time=19.1 ms
64 bytes from kestrelcore.cz (37.46.210.132): icmp_seq=3 ttl=121 time=19.2 ms

--- letters.cz ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 19.162/19.416/19.883/0.367 ms