PING mokrzeszow.edu.pl (2.57.137.43) 56(84) bytes of data.
64 bytes from s43.zenbox.pl (2.57.137.43): icmp_seq=1 ttl=60 time=21.2 ms
64 bytes from s43.zenbox.pl (2.57.137.43): icmp_seq=2 ttl=60 time=20.9 ms
64 bytes from s43.zenbox.pl (2.57.137.43): icmp_seq=3 ttl=60 time=20.9 ms

--- mokrzeszow.edu.pl ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 20.957/21.070/21.282/0.191 ms