PING www.krakow.poprzerwie.pl (2.57.137.47) 56(84) bytes of data.
64 bytes from s47.zenbox.pl (2.57.137.47): icmp_seq=1 ttl=60 time=20.5 ms
64 bytes from s47.zenbox.pl (2.57.137.47): icmp_seq=2 ttl=60 time=20.2 ms
64 bytes from s47.zenbox.pl (2.57.137.47): icmp_seq=3 ttl=60 time=20.1 ms

--- www.krakow.poprzerwie.pl ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 20.188/20.343/20.595/0.243 ms