What is Domain Authority (DA)?
Domain Authority (DA) is an authority score developed by Moz that predicts how likely a website is to gain AEO/GEO visibility. The score ranges from 1 to 100, with higher scores indicating greater authority and citation potential.
Key Facts About DA
- Created by Moz in 2004
- Scores range from 1-100
- Calculated using machine learning
- Based on data from Moz's web index
- Updates approximately once per month
- Logarithmic scale (harder to improve as score increases)
DA Score Interpretation
1-20
New or Low Authority
21-40
Developing Authority
41-60
Moderate Authority
61-80
High Authority
81-100
Very High Authority
What is Domain Rating (DR)?
Domain Rating (DR) is a metric developed by Ahrefs that shows the strength of a website's backlink profile. Like DA, it uses a 0-100 scale, with higher numbers indicating a stronger backlink profile.
Key Facts About DR
- Created by Ahrefs
- Scores range from 0-100
- Focuses primarily on backlink quantity and quality
- Based on Ahrefs' massive link database
- Updates more frequently than DA
- Also uses a logarithmic scale
How Are These Metrics Calculated?
Both DA and DR use proprietary algorithms, but here's what we know about their calculation methods:
Domain Authority (Moz)
Factors considered:
- — Number of linking root domains
- — Total number of links
- — MozRank (link equity)
- — MozTrust (trustworthiness)
- — Quality of linking domains
- — Link profile diversity
Domain Rating (Ahrefs)
Factors considered:
- — Number of unique domains linking
- — DR of linking domains
- — Number of links from each domain
- — Dofollow vs nofollow ratio
- — Link freshness
- — Internal PageRank distribution
Important: Logarithmic Scale
Both metrics use a logarithmic scale, meaning it's exponentially harder to improve your score as it gets higher. Going from DA 20 to 30 is much easier than going from 70 to 80. A site with DA 60 isn't "twice as good" as a site with DA 30.
Why These Metrics Matter (And Why They Don't)
Why They're Useful
- — Quick way to assess site authority
- — Useful for competitor analysis
- — Helps evaluate link opportunities
- — Track authority progress over time
- — Industry-standard benchmarks
Limitations
- — Not direct authority signals for answer engines
- — Can be manipulated
- — Don't consider content quality
- — Ignore user experience signals
- — Relative, not absolute measures
The Bottom Line
DA and DR are useful indicators, not goals. Focus on building a strong AEO/GEO foundation (quality content, good backlinks, technical optimization), and these metrics will naturally improve as a byproduct.
Common Misconceptions & Limitations
Misconception: "Higher DA = More Citations"
Reality: DA and DR are third-party metrics. Answer engines don't use them directly. A site with lower DA can get cited more than a site with higher DA if it has better content, relevance, and user signals for specific queries.
Misconception: "I should only build links from high DA sites"
Reality: Relevance matters more than DA. A link from a relevant DA 30 site in your niche is often more valuable than an irrelevant link from a DA 70 site. Natural link profiles include links from sites of varying authority.
Misconception: "DA and DR should be the same"
Reality: DA and DR use different algorithms and data sources, so scores often differ significantly for the same domain. This is normal and expected.
Misconception: "My DA dropped, my visibility will too"
Reality: DA fluctuates when Moz updates their index or algorithm. A DA drop doesn't necessarily mean your actual AEO/GEO performance declined. Check your actual visibility and traffic instead.
How to Check DA and DR
Checking Domain Authority (Moz)
- — Moz Link Explorer: Free tool with limited queries per month
- — MozBar: Free Chrome extension showing DA on any page
- — Moz Pro: Paid subscription for unlimited checks
- — Bulk DA Checker: Check multiple domains at once
Checking Domain Rating (Ahrefs)
- — Ahrefs Site Explorer: Comprehensive backlink analysis
- — Ahrefs Toolbar: Browser extension for quick DR checks
- — Ahrefs Webmaster Tools: Free tool for your own sites
- — Batch Analysis: Check up to 200 domains at once
Other Tools
- — SEMrush Authority Score: Similar metric from SEMrush
- — Majestic Trust Flow/Citation Flow: Alternative metrics
- — Free Bulk Checkers: Various online tools (accuracy varies)
Using DA/DR in Your Link Building Strategy
Here's how to use these metrics effectively without over-relying on them:
Competitor Analysis
Compare your DA/DR to competitors being cited for your target topics. If they have significantly higher scores, you'll likely need more/better backlinks to compete. But remember: relevance and content quality matter too.
Link Opportunity Evaluation
Use DA/DR as one factor when evaluating link opportunities. DA/DR 40+ is generally worth pursuing. DA/DR 20-40, evaluate relevance carefully. DA/DR under 20, only if highly relevant or niche-specific.
Portfolio Diversification
Aim for a mix of link sources across different DA/DR ranges. A natural profile includes links from high-authority sites (DA 60+), mid-tier sites (DA 30-60), and relevant smaller sites (DA under 30).
Progress Tracking
Monitor your own DA/DR monthly to track long-term trends. Don't panic over small fluctuations—focus on the overall trajectory over 6-12 months.
How to Improve Your Domain Authority & Rating
Improving DA and DR is a long-term process. Here's what actually works:
Build High-Quality Backlinks
Focus on earning links from authoritative, relevant sites through great content, digital PR, and relationship building. Quality over quantity.
Remove Toxic Backlinks
Use Google Search Console and backlink tools to identify and disavow spammy or low-quality links that could harm your profile.
Improve Internal Linking
Strong internal linking helps distribute authority throughout your site and can positively impact domain-level metrics.
Create Linkable Assets
Develop content that naturally attracts links: original research, comprehensive guides, tools, infographics, and industry reports.
Fix Technical Issues
Ensure your site is crawlable, has no major technical issues, and provides a good user experience.
Be Patient
DA and DR change slowly. It can take 3-6 months to see meaningful improvements. Focus on sustainable, white-hat tactics.
What NOT to Do
- — Don't buy links just to increase DA/DR
- — Don't use link farms or PBNs (Private Blog Networks)
- — Don't obsess over small score fluctuations
- — Don't ignore relevance in favor of high DA/DR
- — Don't expect overnight results
Frequently Asked Questions
What's a good Domain Authority score?
It's relative to your industry and competitors. Generally, DA 40+ is considered good, 50+ is strong, and 60+ is excellent. However, a local business with DA 30 might get cited more than a DA 50 site for local queries if they have better local authority signals.
How often do DA and DR update?
Moz updates DA approximately once per month. Ahrefs updates DR more frequently, sometimes daily, as they continuously crawl the web and update their index.
Can my DA or DR go down?
Yes. Scores can decrease if: 1) You lose backlinks, 2) Competitors gain more links, 3) The tool's algorithm changes, or 4) The index is updated. Small fluctuations are normal and not necessarily cause for concern.
Should I focus on DA or DR?
Neither exclusively. Both are useful indicators but use different data. If you have access to both tools, check both. If you can only use one, choose based on which tool (Moz or Ahrefs) you already subscribe to.