Результат выполнения команды PING для clas-school.ru.:

PING clas-school.ru (77.221.130.41) 56(84) bytes of data.
64 bytes from plesk10.infobox.ru (77.221.130.41): icmp_seq=1 ttl=55 time=1.39 ms
64 bytes from plesk10.infobox.ru (77.221.130.41): icmp_seq=2 ttl=55 time=2.10 ms
64 bytes from plesk10.infobox.ru (77.221.130.41): icmp_seq=3 ttl=55 time=1.35 ms
64 bytes from plesk10.infobox.ru (77.221.130.41): icmp_seq=4 ttl=55 time=1.40 ms
64 bytes from plesk10.infobox.ru (77.221.130.41): icmp_seq=5 ttl=55 time=1.36 ms

--- clas-school.ru ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4003ms
rtt min/avg/max/mdev = 1.357/1.524/2.105/0.293 ms