Domain Rating vs Domain Authority: What Actually Matters

Domain Rating (DR) and Domain Authority (DA) are the two numbers every link builder stares at — and they are often mistaken for the same thing. They come from different tools, measure different things, and can disagree wildly for the same site. Knowing which to trust for which decision will save you from both overpaying and bad placements.

What DR actually measures

DR is Ahrefs' metric. It measures the strength of a site's backlink profile on a 100-point scale, based on the quantity and quality of unique referring domains pointing to the site — with the catch that DR is logarithmic and influenced by how strong the referring sites themselves are. A DR 60 site is not twice as strong as a DR 30 site; the scale compounds.

What DA actually measures

DA is Moz's metric. It is a machine-learning prediction of how likely a domain is to rank in search results, modeled on correlation data rather than a pure link count. Because it is predictive, it moves in steps and can sit unchanged for months while the underlying profile shifts underneath it.

Why the same site can show DR 40 and DA 60

The two tools crawl different link indexes and weigh them differently. A site with lots of links from a few strong domains may score high DR but modest DA, while a site with a broad but shallow link profile shows the reverse. Neither is wrong — they answer different questions.

How to use them together

When evaluating a placement or a competitor, use both as a first-pass filter, then verify with the things that actually determine whether a link helps you:

• Organic traffic: a DR 70 site with 400 monthly visits is usually a worse placement than a DR 40 site with 50,000.
• Topical relevance: a link from a relevant niche site outweighs a higher-DR general site.
• Traffic trend: rising traffic over 12 months signals a healthy, growing site.
• Spam score: check that the link profile is clean, not bought.
• Outbound links: a page selling dozens of placements dilutes what it passes to you.

Rule of thumb: DR and DA get a prospect onto your shortlist. Traffic, relevance, and link quality get it onto your site. Every listing on ProBacklinksHub shows both metrics side by side precisely so you can spot the sites where the two disagree — those are the ones worth a manual look before you commit.