Domain Rating is a metric measure by SEO tool Ahrefs. The rating is a number from 1-100 that gives a website a rank based on its backlink profile. It’s an overall health score if you like. A good DR indicates that a site is trusted and is likely to rank well. A score between 40 and 50 is considered average, between 50 and 60 is good, and over 60 is seen as very good.