Domain age tool..
In my words, It is used to find out the age of your competitor's domains,older domains may get a slight edge in search engine rankings. This tools display the approximate age of a website on the internet and allows you to view how the website locked when it first started. if anybody know some ordinary step to get much easiser means pls share yours...
If you have the SEO add-ons then you can easily get the information about the age of a particular domain, when it was created and the expiry date also.