SEOs argue about DA versus DR the same way developers argue about code editors, with strong opinions and not much agreement. Both are useful, both are misunderstood, and picking one over the other usually matters less than understanding what each one actually measures and where it breaks down.
What Each Metric Is Built To Measure
Domain Authority, a 1 to 100 score from Moz, predicts ranking ability based on Moz’s own link index. Ahrefs Domain Rating, also on a 1 to 100 scale, measures the strength of a domain’s backlink profile based on Ahrefs’s separate link index. Neither metric is used by Google directly, and both are third-party predictions, not ranking factors.
The core difference is the underlying link index each tool crawls and indexes independently, which means the same domain can show meaningfully different scores between the two platforms.
Why the Same Site Shows Different Scores
Moz and Ahrefs crawl the web independently and discover different sets of backlinks, so neither tool has a complete picture of every link pointing to a domain. A site can show DA 45 and DR 60 simultaneously simply because each tool’s crawler found a different slice of the total link landscape.
From experience, I have seen this confuse clients more than almost any other SEO concept, since a jump or drop in one tool with no corresponding move in the other often gets mistaken for a real ranking signal when it is really just a difference in crawl coverage.
Backlink Index Size and Coverage
Ahrefs has historically marketed a larger raw backlink index than Moz, which can make DR feel more comprehensive on paper, while Moz’s index is tuned more specifically around its own scoring formula. Larger index size does not automatically mean more accurate predictions for any individual site.
55.24% of pages on the web have zero backlinks pointing to them according to Ahrefs, and on sites in that category, both DA and DR tend to sit near the bottom of the scale regardless of which tool you check, since there is simply nothing for either crawler to find.
Which Metric SEOs Tend to Trust More
Many agencies use both metrics together rather than picking one, since clients and partners often recognize whichever metric they are already familiar with. There is no universal industry consensus that one metric is more accurate, and trust in either one often comes down to which tool an agency already has access to.
From experience, the practical answer for most agencies is using whichever tool the client already references in conversation, since reporting against an unfamiliar metric just creates extra explanation without adding real value to the relationship.
Practical Differences When Checking at Scale
Bulk checking is where the practical difference often shows up most clearly, since tool pricing, rate limits, and export formats vary between platforms. For agencies checking dozens or hundreds of domains regularly, the ease of running a fast batch check matters as much as which exact score the tool returns.
Our Bulk DA PA Checker pulls DA, PA, spam score, inbound links, and outbound links for up to 50 domains in one pass, which covers the Moz side of this comparison without manual one-by-one lookups.
Should You Pick One or Track Both?
Tracking both metrics over time gives a more complete picture than relying on a single score, since each one can catch link changes the other misses due to differing crawl coverage. For client reporting specifically, consistency matters more than which metric is technically superior, so sticking with one for trend tracking avoids confusing comparisons.
Backlinks remain one of Google’s top three ranking factors regardless of which metric you use to track them, so the underlying link building work matters more than the specific number either tool reports back.
Frequently Asked Questions
Is a DA score the same number as a DR score?
No, even though both use a 1 to 100 scale, they come from separate link indexes and calculation methods, so the same domain often shows different numbers on each.
Which metric updates more frequently?
Update frequency varies by tool and changes over time as each provider adjusts its crawling and refresh cycles, so check current documentation from each platform for specifics.
Can a site have a high DR but low DA?
Yes, since each tool’s crawler indexes a different subset of the web’s backlinks, mismatches in either direction are common and not unusual.
Do agencies need subscriptions to both Moz and Ahrefs?
Not necessarily. Many agencies pick one as their primary reporting tool and use free or bulk checker tools for spot comparisons rather than paying for both full platforms.
Does Google use either DA or DR as a ranking factor?
No, both are third-party metrics built by their respective companies to predict ranking potential, and neither is part of Google’s actual ranking algorithm.
Check Your Score Across Domains in Bulk
Our Bulk DA PA Checker handles up to 50 domains per batch, covering DA, PA, and spam score in one export. Browse our full suite of SEO tools for more bulk-checking utilities, or reach out through our expert SEO consultant page if you want help interpreting mismatched scores across a larger portfolio.
