Z mobilu to funguje.

Výpis cmd:

ping brno.idnes.cz

Pinging c03.idnes.cz [90.183.121.150] with 32 bytes of data:
Reply from 90.183.121.150: bytes=32 time=8ms TTL=53
Reply from 90.183.121.150: bytes=32 time=8ms TTL=53
Reply from 90.183.121.150: bytes=32 time=8ms TTL=53
Reply from 90.183.121.150: bytes=32 time=8ms TTL=53

Ping statistics for 90.183.121.150:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 8ms, Maximum = 8ms, Average = 8ms