This free "domain age finder" tool will quickly tell you when a domain was created, and when it will expire, and the age of the domain. It also helps you find out the age of your competitor's domains.Importance of domain age
One of the biggest factors used to determine the rank of a website is the age of a domain. It makes sense that older websites will have more "experience" to boost their credibility, in the same way that domains which are registered for more than a year lend more confidence to the stability of their website. In the eyes of a search engine, domain age matters. One of the many factors in Google's search engine algorithm consider the age of a domain name. In a small way, the age of a domain gives the appearance of longevity and therefore a higher relevancy score in Google.