What Is Domain Rating?

Domain Rating is a metric from Ahrefs, the SEO tool founded by Dmitry Gerasimenko. It runs on a 0 to 100 scale and shows the strength of a domain's backlink profile compared with every other domain in Ahrefs' own index. Google doesn't calculate it, nor does any other search engine: it comes from Ahrefs' own crawler, AhrefsBot, and the link graph that crawler builds day after day.

The calculation principle echoes Google's original PageRank algorithm, but applied at the whole-domain level instead of individual pages. Ahrefs doesn't publish the exact formula with every parameter, that logic stays proprietary, though the company does document the general mechanism in its own methodology guide. Ahrefs describes the process as passing "link juice" between domains: when one domain links to another through a followed link, it hands over part of its own authority.

AhrefsBot crawls the web continuously and, by Ahrefs' own account, ranks among the most active crawlers online, alongside Google's and Bing's. That means a domain's DR can shift at any moment without the site itself changing anything, simply because the crawler picked up new inbound or outbound links on other domains within the graph.

Domain Rating works at the whole-domain level. For individual pages, Ahrefs uses a sibling metric called URL Rating (UR), which applies similar logic but measures the link strength of a specific URL rather than the entire domain. Mixing up the two is common: a domain with a high DR can still have internal pages with a low UR if those particular pages haven't earned links of their own.

Like Moz's Domain Authority, Google doesn't calculate Domain Rating either, and it plays no part in Google's ranking algorithm. It remains a third-party estimate drawn from Ahrefs' index, useful as a reference point but without any official status.

The mechanism Ahrefs describes works like this. When domain A has a followed link pointing to domain B, part of A's DR passes to B. The amount passed is calculated, roughly, by dividing domain A's DR by the number of unique domains A links to in total. If A links to only five distinct domains, each one receives a bigger share of that authority. If A links out to several thousand domains, as happens with directories or news portals with mass outbound linking, the share reaching each target dilutes accordingly.

That has a direct practical consequence for link building: a link from a selective domain that links out to few external sites is usually worth more for DR than a link from a domain with thousands of outbound links, even if both domains start with the same DR.

Ahrefs applies two more rules worth knowing. First, only the first followed link from one domain to another counts toward the DR calculation; additional links from the same source domain don't add any further DR, though they can still help other metrics like traffic. Second, nofollow links pass no DR at all. A domain that only receives nofollow links from another site sees no DR effect from that relationship.

One point that separates DR from DA in practice: Ahrefs describes its own metric as "purely link-based," without filtering for quality beyond the link graph itself. That means a profile with plenty of low-quality but followed links from different domains can keep building DR, exactly what Moz's spam score is designed to discount. Neither approach is more "correct," they simply start from different assumptions about what makes a link valuable.

DR doesn't account for a domain's search traffic, its age, or brand popularity, as Ahrefs documents itself. It also ignores topical relevance: a link from a cooking blog to a software store raises DR through the exact same math as a link between two domains in the same industry, even though the real SEO value probably isn't the same.

A worked example makes this more concrete: domain A has a DR of 80 and links out to four other domains, so each one gets roughly a quarter of the transferable value. Domain C also has a DR of 80 but links out to 400 domains, so each individual target gets only a tiny fraction of that same value. A single link from domain A is therefore potentially far more valuable for the target's DR than a link from domain C, even though both source domains carry the same DR score.

Domain Rating works well as a quick filter. When reviewing a list of dozens or hundreds of domains for a link building campaign, sorting by DR helps set priorities, always as a first-pass criterion, never the only one.

It also works for tracking your own domain's progress over time, as long as it's measured with the same tool and at comparable points. A DR that climbs steadily over months usually reflects a growing link profile, though it says nothing about whether that growth actually translates into better search positions.

The most important limit: DR, just like DA, is not a Google ranking factor and carries no official status. Some correlation with good rankings exists because both partly depend on having quality links, but treating DR as a substitute for real ranking analysis is a common mistake.

When both metrics are available for the same domain, DR and DA work best as two independent opinions rather than one merged number. If they agree, say a domain with DR 70 and DA 65, that agreement adds confidence that the link profile is solid. If they diverge sharply, say DR 75 and DA 20, it's worth investigating why: one of the two indexes may have already picked up a recent link campaign the other hasn't detected yet, the crawlers may cover certain regions unevenly, or the link profile may include plenty of low-quality domains that Moz's spam score discounts but Ahrefs still counts.

One more nuance for sites outside the English-speaking market: AhrefsBot and Moz's crawler don't cover every language and region with the same depth. A domain in another language with a solid link profile within its local niche can show a lower DR than an equivalent English-language competitor, simply because the reference index has mapped fewer links in that market. Always compare against direct competitors in the same language and sector, not against a generic benchmark.

Anyone with access to referring domains counts and dofollow ratios alongside the DR figure should keep an eye on those numbers too. Two domains with an identical DR can have a completely different number of link sources, and a domain with few but very strong links can land on the same DR score as a domain with hundreds of weaker ones.

• Use DR only as a relative comparison between similar domains, never as an absolute figure.
• Track DR over time with the same tool, so changes reflect real progress rather than index differences.
• When both DR and DA are available for the same domain, treat them as independent opinions instead of merging them into one conclusion.
• Check the number and quality of linking domains, not just the DR figure, before evaluating a partnership or link exchange.
• Always compare against direct competitors in the same industry and language, not against a generic threshold.
• Note the lookup date for DR in reports, since the number can shift with every update to Ahrefs' crawler.

• Treating a DR of 50 and a DA of 50 as the same level of authority.
• Presenting a rising DR as direct proof of a Google ranking improvement.
• Buying bulk links from the same domain expecting DR to keep climbing, when only the first followed link from each domain counts.
• Chasing low-quality links just because they add DR, ignoring that they aren't filtered the way Moz's spam score filters them.
• Comparing a DR measured this month against a DA measured a year ago, as if the time gap didn't matter.
• Showing a client only one of the two metrics as the full truth about a domain's authority when access to both exists.