Domain age checker is free seo tools helps to find the exact age of the domain .It is one of the many ranking factors used by Search Engine.
Domain age refers to the length of time that a website has been registered and active is calculated by registration date and expiration date. Domain age is the major factors ranking of search engines.
Domain age is important to seo rankings and search engine rankings based on these three factors:
1. Registration date.
2. Expiration date.
3. Frequency of changes over time.
Domain Age can be checked in Internet Archive: Wayback Machine