Domain Rating (DR)

Domain Rating (DR) is a proprietary link authority metric developed by Ahrefs that scores the overall strength of a website’s backlink profile on a logarithmic scale from 0 to 100. Higher DR indicates a stronger and more diverse backlink profile. DR is calculated based on the number of unique referring domains linking to the target domain, weighted by the DR of those linking domains and the number of external links they contain. It is commonly used in SEO to benchmark site authority, qualify link prospects, and evaluate competitive landscape.

How it works

Ahrefs crawls the web and maintains a database of discovered links. For each domain, it calculates DR by summing the weighted contribution of all referring domains: a link from a DR 90 site that has few outbound links contributes more than a link from a DR 90 site that links to thousands of domains. The calculation is recursive (similar to PageRank), meaning the final scores reflect the interconnected nature of the web’s authority hierarchy. DR is updated continuously as Ahrefs discovers new links and recrawls existing pages. Because it is logarithmic, moving from DR 20 to DR 30 is far easier than moving from DR 70 to DR 80.

Key facts

• Logarithmic scale: Each increment of DR above 60 requires exponentially more high-quality links than the previous increment, making top-end DR scores rare and meaningful.
• DR vs. Google PageRank: DR is a useful proxy for Google’s internal authority assessment but is not identical to PageRank; high DR does not guarantee ranking, nor does low DR preclude ranking for the right content.
• Ahrefs vs. Moz DA: Moz’s Domain Authority (DA) is an alternative metric with different methodology; DR and DA frequently disagree on specific domains, and neither should be treated as definitive.

For builders

For content publishers building a link acquisition strategy, DR of prospective link sources is a useful filter: targeting links from DR 40+ domains in the same topical niche is a reasonable quality standard. However, fixating on DR can lead to overlooking highly relevant links from low-DR niche sites that may pass strong topical authority signals. For competitive analysis, comparing DR distribution across a competitor’s backlink profile reveals whether their authority is concentrated in a few high-DR links or distributed across many referring domains, which affects how replicable the strategy is.

Sources

• Google. Search Central documentation. developers.google.com
• Google. SEO Starter Guide. developers.google.com
• W3C. HTML5 recommendation, the foundation for semantic markup. w3.org
• Schema.org. Full type hierarchy. schema.org
• Ahrefs. Large-scale SEO research studies. ahrefs.com