Invalid Domain Lookup Warning!
The domain you tried to lookup is not valid for our system. You can only use valid web domains that are currently registered on the internet. Below you can find some examples:
Valid domains!
google.com
www.bing.com
http://www.amazon.com
microsoft.com
Invalid domains!
google
http://www.bing
amazoncom
www.microsoft

Make sure you add the name + TLD. So google.com, not just google.