Domain Rating vs. Domain Authority: What’s the Difference
When you compare Domain Rating and Domain Authority, you’re not just looking at two different numbers—you’re looking at two different ways of judging your site’s strength. One focuses more on your backlink profile; the other weighs a wider set of signals. If you treat them the same, you can make bad calls on link building, forecasting, and competitor analysis. The trick is knowing which metric to trust, and when it quietly misleads you.
What Domain Authority and Domain Rating Actually Measure
Although Domain Rating (DR) and Domain Authority (DA) are often discussed together as general “authority” metrics, they measure different aspects of a site’s strength.
DR, developed by Ahrefs, is primarily a backlink-based metric. It evaluates the quantity and quality of unique dofollow referring domains, adjusts their influence based on the referring sites’ own DR scores, and reduces the impact of links from pages with many outbound links. These factors are combined into a logarithmic score from 1 to 100, making it progressively harder to increase DR at higher levels.
DA, from Moz, estimates how likely a domain is to rank in search results relative to others. It is a machine learning–driven score that incorporates a broader set of signals—reportedly around 40—including linking root domains, MozRank (link popularity), MozTrust (link trust), spam indicators, and various proxies for content quality. DA is also presented on a 1–100 logarithmic scale, but it relies on Moz’s own index and training data, which are updated on a different, typically slower, cycle than Ahrefs’ link index.
In practice, DR is more narrowly focused on link-based authority, while DA is designed as a more holistic, predictive metric of ranking potential within Moz’s modeling framework. For businesses looking to gain a competitive advantage, acquiring high domain authority domains can provide a strong foundation for building link equity, boosting credibility, and supporting long-term SEO growth.
DA vs DR: The Key Differences That Matter
While both metrics are often grouped together as “authority scores,” Domain Rating (DR) and Domain Authority (DA) are calculated differently and are best used for different types of analysis.
DR is Ahrefs’ metric that focuses primarily on backlink strength. It's based largely on the number of unique referring domains, the DR of those referring domains, and how those domains distribute their outbound links. Because Ahrefs updates its index frequently, DR can reflect changes in a site’s backlink profile relatively quickly. In practice, DR is mainly an indicator of raw link equity.
DA is Moz’s machine‑learning‑based metric that updates less frequently and incorporates a broader set of signals, reportedly on the order of dozens. These include link quantity and quality, spam indicators, MozRank, MozTrust, and other proprietary factors. DA is designed to estimate how likely a domain is to rank relative to other domains in Moz’s index, rather than to measure link strength alone.
Discrepancies between the two scores can be informative. A domain with a much higher DR than DA may warrant closer review of its backlink profile, as this pattern can be associated with links that are strong in quantity or apparent equity but weaker in overall quality or relevance.
Conversely, a domain with a significantly higher DA than DR may indicate stronger on‑site signals and content performance relative to its current backlink strength.
When to Use DA vs DR in Your SEO Strategy
Use Domain Rating (DR) within Ahrefs as a practical, real-time filter for link prospecting and campaign monitoring. Because DR updates quickly based on new referring domains, dofollow links, and changes in the authority of referring sites, it's useful for assessing the immediate impact of link-building activities.
Use Domain Authority (DA) primarily for benchmarking and longer-term evaluation. DA is helpful when comparing your site to competitors, estimating overall ranking potential, and assessing whether your domain is strengthening over time.
A common process is to qualify prospects initially with DR, then review DA alongside Moz’s spam-related metrics to refine your assessment. For short-term performance and link-building impact, DR is generally more informative.
For long-term planning and competitive analysis, DA is often more suitable. Significant discrepancies between a site’s DA and DR may indicate underlying issues (such as a low-quality link profile) or potential opportunities (such as underleveraged authority), which can inform content and link-building priorities.
How DA and DR Are Calculated (Without the Jargon)
Even though DA and DR are technical metrics, both essentially measure how strong and trustworthy a website appears based on its link profile.
For DR, Ahrefs focuses on how many unique websites link to you with dofollow links and adjusts the impact of those links based on the DR of each linking site. Links from websites that link out to many other domains typically pass less value per link.
DA, calculated by Moz, relies on a broader set of inputs. It uses around 40 signals—such as the number of linking domains, the quality and relevance of those links, and indicators of spam risk—in a machine‑learning model designed to estimate how likely a domain is to rank in search results.
Both DA and DR are reported on a 1–100 logarithmic scale, meaning that improvements become progressively harder as the score increases.
How to Improve Your DA and DR Over Time
Now that you understand what DA and DR measure, the next step is to improve these metrics in ways that also support organic search performance. Focus on earning high-quality dofollow backlinks from a diverse set of authoritative, relevant domains, rather than accumulating multiple links from the same site.
Develop in-depth, topically focused content that addresses user intent, and promote it through methods such as guest posting, targeted outreach, and digital PR. Improve internal linking so that pages with strong backlink profiles can transfer equity to other important pages, which can help raise overall Page Authority and visibility.
Conduct regular backlink audits to identify low-quality, spammy, or manipulative links, and remove or disavow them when appropriate. Monitor changes using tools such as Ahrefs and Moz, and compare these metrics with trends in organic traffic, rankings, and conversions to assess whether your link-building and content strategies are having a positive impact.
Conclusion
In the end, you don’t need to “pick a side” in the Domain Rating vs. Domain Authority debate. Use DR for real-time link prospecting and spotting quick-win opportunities, and lean on DA for long-term benchmarking and competitive analysis. Focus on earning high-quality, relevant links, building genuinely useful content, and keeping your site clean and trustworthy. Do that consistently, and you’ll see both your DR and DA move in the right direction.