Domain Rating

Domain Rating (DR) is Ahrefs' score for a domain's backlink profile strength. It is calculated on a logarithmic scale — moving from DR 70 to DR 80 requires significantly more link acquisition than moving from DR 20 to DR 30. The score reflects how many unique referring domains link to the domain and the DR of those referring domains (a link from a DR 90 site carries more weight than one from a DR 20 site).

DR is widely used as a proxy for link authority in digital asset evaluation because it provides a standardized, comparable number across sites. However, it is a blunt instrument: it does not capture topical relevance of referring domains, link quality (editorial vs purchased), anchor text distribution, or historical link patterns. Two domains can have identical DR scores with dramatically different actual ranking potential depending on those factors.

For acquisition purposes, DR is a useful starting point but should not be a primary valuation driver. A DR 35 site with 400 topically relevant referring domains in a niche vertical may outperform a DR 55 site with 2,000 mixed-quality links across irrelevant domains. Use DR as a screening metric, then audit the actual link profile for quality and topical relevance.

A finance comparison site listed for acquisition shows DR 52. Drilling into the referring domain list reveals that 40% of those links come from a private blog network the previous owner built — a significant penalty risk that the aggregate DR score does not reflect. The same DR 52 on a site whose links came entirely from organic editorial citations would represent a very different quality of asset.

DR is Ahrefs-specific. Moz uses Domain Authority (DA), SEMrush uses Authority Score. These metrics are correlated but not equivalent — they use different crawls, different scoring methodologies, and different link indexes. Comparing a site's DR to another site's DA is not a like-for-like comparison.