What is Domain Rating?
Domain Rating (DR) is an Ahrefs score from 0 to 100 that estimates the strength of a website's backlink profile. It looks at how many unique websites link to a domain and how strong those linking sites are themselves.
A link from a high-DR site that links out to few other sites passes more value than a link from a weak site that links to thousands. Backlinks are the core of off-page SEO.