PING frantisekgela.cz (81.91.85.211) 56(84) bytes of data.
64 bytes from m137.server4u.cz (81.91.85.211): icmp_seq=1 ttl=61 time=20.6 ms
64 bytes from m137.server4u.cz (81.91.85.211): icmp_seq=2 ttl=61 time=19.1 ms
64 bytes from m137.server4u.cz (81.91.85.211): icmp_seq=3 ttl=61 time=19.0 ms

--- frantisekgela.cz ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 19.090/19.606/20.617/0.732 ms