PING www.ddnamest.cz (81.91.92.13) 56(84) bytes of data.
64 bytes from m243.server4u.cz (81.91.92.13): icmp_seq=1 ttl=61 time=19.4 ms
64 bytes from m243.server4u.cz (81.91.92.13): icmp_seq=2 ttl=61 time=19.5 ms
64 bytes from m243.server4u.cz (81.91.92.13): icmp_seq=3 ttl=61 time=19.3 ms

--- www.ddnamest.cz ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 19.394/19.455/19.507/0.123 ms