Open up a command prompt by clicking Start --> Then Run. Type in cmd and click Ok.
At the command prompt type nslookup
This example is a success. After you receive the > prompt you may also type in a website to test.
In this case we used
www.Google.com as our example. If you receive their IP addresses back, again this is a
successful attempt.
This is an unsuccessful attempt. Notice the DNS request timed out.