dos > ping dotteddonain.name -a
you should get a result like...
c:\>ping thetechguide.com -a
Pinging thetechguide.com [66.17.244.2] with 32 bytes of data:
Reply from 66.17.244.2: bytes=32 time=691ms TTL=43
Reply from 66.17.244.2: bytes=32 time=1382ms TTL=43
Request timed out.
Request timed out.
Ping statistics for 66.17.244.2:
Packets: Sent = 4, Received = 2, Lost = 2 (50% loss),
Approximate round trip times in milli-seconds:
Minimum = 691ms, Maximum = 1382ms, Average = 518ms