review my webstie http://www.storagedubai24x7.com/

[nomi147]

The External links to domain metric displays the external equity links referring to the domain name / root URL and not the complete domain.

Moz calculates Domain authority and Page authority based on different link metrics like, Number of linking root domains, quality of the incoming links, etc.
Domain age vs Website age

This tool calculates Website age because it’s a better and more relevant SEO factor to measure. Especially when you compare PA, DA, PR and Website age to see how a domain has developed over time. A Website age of 6.4 years means a website is 6 years and 4 months old.

Domain age – the number of years since a domain has been registered.
Website age – the first time since a website appeared on-line