What is Domain Authority? Complete Guide to DA Score 2026

Quick answer: Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how likely a website is to rank in search results on a scale of 1 to 100, with higher scores indicating greater ranking potential. DA is calculated using 40+ factors including linking root domains, total number of links, and quality of backlinks. A DA of 30-40 is average, 40-50 is good, 50-60 is very good, and 60+ is excellent.

Most important thing to know: Domain Authority is NOT a Google ranking factor, it’s a third-party metric created by Moz to predict ranking potential, not determine it. Google doesn’t use DA in its algorithm and has its own internal authority metrics. DA is useful for competitive analysis (comparing your site to competitors) and tracking SEO progress over time, but improving DA alone won’t directly improve Google rankings, you must improve the underlying factors (backlinks, content quality, technical SEO) that both DA and Google consider.

Critical misconception to avoid: A higher DA doesn’t guarantee higher rankings. A DA 40 site with highly relevant, quality content can outrank a DA 60 site with poor content for specific keywords. DA measures domain-level authority, not page-level relevance or content quality. Focus on building genuine authority through quality content and natural backlinks rather than obsessing over the DA number itself.

According to Moz, Domain Authority is best used as a comparative metric rather than an absolute score. A DA increase from 30 to 35 is significant progress, while a DA of 50 for a small business blog is excellent even though it’s far below major publications (DA 90+). The metric is logarithmic, meaning it’s exponentially harder to improve DA as the score increases, going from 20 to 30 is much easier than going from 70 to 80.

This complete 2026 guide explains what Domain Authority is, how it’s calculated, how to check your DA score, what’s considered a good DA, how to improve your Domain Authority, common myths about DA, and how DA compares to other authority metrics like Ahrefs Domain Rating.

What is Domain Authority (DA)?

Definition: Domain Authority (DA) is a proprietary search engine ranking score developed by Moz that predicts how well a website will rank on search engine result pages (SERPs). Scores range from 1 (lowest) to 100 (highest).

Key characteristics:

• Predictive metric: Estimates ranking ability, doesn’t determine it
• Comparative tool: Best for comparing sites, not measuring absolute quality
• Domain-level measurement: Evaluates entire domain, not individual pages
• Logarithmic scale: Each point higher is exponentially harder to achieve

What DA tells you:

• ✅ Relative authority compared to competitors
• ✅ Overall SEO health and progress over time
• ✅ Link profile strength
• ✅ Potential to rank in search results

What DA doesn’t tell you:

• ❌ Actual Google rankings (not a Google metric)
• ❌ Content quality or relevance
• ❌ User experience or site speed
• ❌ Keyword-specific ranking potential

How Domain Authority is Calculated

Moz’s calculation uses 40+ ranking signals, with the most important being:

Major factors (high weight):

1. Linking root domains:

• Number of unique websites linking to your domain
• Most important single factor
• 100 links from 100 domains > 100 links from 1 domain

2. Total number of links:

• All backlinks pointing to your site
• Quality matters more than quantity

3. MozRank of linking domains:

• Authority of sites linking to you
• Links from high-authority sites (DA 70+) more valuable than low-authority sites (DA 10)

4. MozTrust:

• Measures trust based on distance from trusted seed sites
• Sites linked to .gov, .edu, major news sites score higher

5. Link quality indicators:

• Relevance of linking sites
• Link placement (editorial vs. sidebar/footer)
• Anchor text diversity
• Follow vs. nofollow links

Minor factors (lower weight):

• Domain age
• Site structure and crawlability
• Content freshness
• Social signals (minimal impact)

Important: Moz uses machine learning that constantly evolves, so exact factor weights change. The algorithm is updated periodically, sometimes causing DA fluctuations across all sites.

How Moz calculates your score:

1. Moz’s web crawler (Mozscape) indexes the web
2. Analyzes backlink profile of millions of sites
3. Compares your site’s link profile to others
4. Assigns score based on predicted ranking potential
5. Updates index monthly (DA scores update with each index)

Why it’s logarithmic:

• Going from DA 20 to 30: Requires doubling quality links
• Going from DA 70 to 80: Requires 10x more effort/links
• Top sites (DA 90+) are major brands with millions of backlinks

Domain Authority vs. Page Authority

Domain Authority (DA):

• Measures entire domain strength
• Score for example.com as a whole
• Influences all pages on the domain
• Based on domain-level backlink profile

Page Authority (PA):

• Measures individual page strength
• Score for example.com/specific-page
• Predicts ranking potential for that specific URL
• Based on page-level backlinks + domain authority

Relationship:

• Strong DA lifts all pages on your site
• Individual pages can have higher PA than your DA
• A DA 40 site can have a PA 60 page (if that page has many strong backlinks)

Example:

• Blog homepage: DA 35, PA 40
• Viral blog post with 500 backlinks: DA 35 (unchanged), PA 58 (specific to that page)

How to Check Domain Authority

Free Methods

1. Moz Link Explorer (Free Tier)

How to use:

1. Go to https://moz.com/link-explorer
2. Enter your domain (example.com)
3. Click “Search”
4. View DA score (shown prominently)

Free limits:

• 10 queries per month
• Limited backlink data (not full profile)
• Basic metrics only

2. MozBar Browser Extension (Free)

How to install:

1. Visit https://moz.com/mozbar
2. Download for Chrome or Firefox
3. Install extension
4. Create free Moz account (required)

How to use:

• Visit any website
• Click MozBar icon in browser
• See DA/PA instantly in toolbar
• View metrics overlaid on Google search results

Benefits:

• Instant DA check on any site
• Compare competitors in search results
• See DA/PA while browsing

3. Third-Party Checkers (Free)

Tools offering free DA checks:

• Ahrefs Free SEO Tools (also shows DR)
• SEMrush Backlink Analytics (limited free)
• SmallSEOTools DA Checker
• Prepostseo Domain Authority Checker

Caution: Some third-party tools show outdated DA scores (use Moz directly for most accurate)

Paid Methods (More Data)

Moz Pro ($99-$599/month):

• Unlimited DA checks
• Full backlink profile analysis
• Rank tracking
• Site audits
• Keyword research

When worth paying:

• Professional SEO work
• Managing multiple client sites
• Need in-depth link analysis
• Want historical DA tracking

What is a Good Domain Authority Score?

DA Score Benchmarks

DA 1-10: Very weak

• New sites with few/no backlinks
• Sites with technical issues or penalties
• Abandoned or low-quality sites

DA 10-20: Below average

• New blogs (< 6 months old)
• Small sites with minimal backlinks (5-20 links)
• Sites with low-quality link profiles

DA 20-30: Average for new sites

• Established blogs (6-12 months)
• Small businesses with basic SEO
• Sites with 20-50 quality backlinks

DA 30-40: Average to good

• Established sites (1-2 years) with consistent content
• Local businesses with solid SEO
• Sites with 50-200 quality backlinks

DA 40-50: Good

• Well-established sites (2-3+ years)
• Successful blogs with regular traffic
• Sites with 200-500 quality backlinks

DA 50-60: Very good

• Authority sites in their niche
• Successful businesses with strong online presence
• Sites with 500-2,000 quality backlinks

DA 60-70: Excellent

• Major publications or industry leaders
• Very successful businesses
• Sites with 2,000-10,000+ quality backlinks

DA 70-80: Elite

• National brands
• Major news publications
• Government/educational institutions
• Sites with 10,000-100,000+ backlinks

DA 80-90: Exceptional

• Global brands (Nike, Apple, Microsoft)
• Major media (CNN, BBC, New York Times)
• Sites with 100,000-1M+ backlinks

DA 90-100: Dominant

• Google, Facebook, YouTube, Wikipedia
• Most visited sites globally
• Millions of backlinks from highly authoritative sources

Context Matters

DA is relative to:

1. Your niche:

• Tech blog: DA 40 competitive, DA 60 excellent
• Local plumber: DA 25 good, DA 40 dominant in local market
• National news: DA 70 minimum to compete

2. Your competitors:

• If competitor has DA 35, your DA 40 gives advantage
• If competitor has DA 65, your DA 40 requires content/relevance edge

3. Your site age:

• 3-month-old site: DA 15 normal
• 1-year-old site: DA 25-30 good progress
• 3-year-old site: DA 40-50 expected for active site

Realistic DA goals by site age:

• 0-6 months: DA 10-20 (if actively building links)
• 6-12 months: DA 20-30
• 1-2 years: DA 30-40
• 2-3 years: DA 40-50
• 3-5 years: DA 50-60 (with consistent effort)
• 5+ years: DA 60-70 (if well-established authority)

Don’t compare:

• Your small business blog (DA 30) to Forbes (DA 95)
• Your local service site to national brands
• Your new site to 10-year-old established sites

How to Improve Domain Authority

Critical principle: You cannot directly “improve DA”, you improve the underlying SEO factors (backlinks, content, technical) that Moz measures, which then increases DA as a byproduct.

1. Earn High-Quality Backlinks (Biggest Impact)

Focus on quality over quantity:

What makes a quality backlink:

• ✅ From relevant sites in your industry
• ✅ From high-DA sites (DA 40+)
• ✅ Editorial (in content, not sidebar/footer)
• ✅ Contextual (surrounded by relevant text)
• ✅ Follow link (passes authority)

How to earn quality backlinks:

Create link-worthy content:

• Original research and data
• Comprehensive guides (10,000+ words)
• Tools and calculators
• Infographics
• Expert roundups
• Industry reports

Guest posting (done right):

• Write for sites in your niche with higher DA
• Provide genuine value, not just links
• Build relationships with editors

Digital PR:

• Get mentioned in news articles
• Respond to journalist requests (HARO)
• Create newsworthy content
• Build relationships with reporters

Resource page link building:

• Find pages listing industry resources
• Pitch your content as valuable addition

Broken link building:

• Find broken links on relevant sites
• Suggest your content as replacement

What to avoid:

• ❌ Buying links (can harm DA and rankings)
• ❌ Link schemes or PBNs
• ❌ Irrelevant directory submissions
• ❌ Spammy comment links
• ❌ Low-quality guest posts on link farms

2. Remove Toxic Backlinks

Why this matters: Bad links can hurt your DA and Google rankings

How to find toxic links:

1. Use Moz Link Explorer or Google Search Console
2. Look for links from:
   • Spam sites
   • Foreign language sites (if not relevant)
   • Adult content sites
   • Link directories
   • Sites with very low DA (< 5)
   • Sites with high spam scores

How to remove:

1. Contact webmaster requesting removal
2. If no response, use Google Disavow Tool
3. Focus on egregious toxic links (low DA + spammy)

Note: Don’t obsess over every low-quality link, Google ignores most spam. Focus on acquiring good links rather than removing every mediocre one.

3. Improve Internal Linking Structure

Why it helps: Strong internal linking distributes authority throughout your site

Best practices:

• Link from high-authority pages to important pages
• Use descriptive anchor text (not “click here”)
• Ensure no orphaned pages (pages with no internal links)
• Create content hubs with pillar pages linking to cluster content
• Include links in content (not just navigation)

Example structure:

• Homepage (highest PA) links to main category pages
• Category pages link to individual posts
• Individual posts link to related posts
• All links use relevant keywords in anchor text

4. Create Excellent, Comprehensive Content

Why it works: Quality content attracts natural backlinks

What “excellent content” means:

• Comprehensive (2,000-10,000+ words for pillar content)
• Original insights or data
• Better than top 10 search results for target keyword
• Includes visuals (images, charts, videos)
• Regularly updated
• Solves specific user problems

Content types that earn links:

• Ultimate guides
• Original research/surveys
• Case studies with data
• Tool/resource lists
• Expert interviews
• Contrarian perspectives backed by data

5. Fix Technical SEO Issues

Technical problems affecting DA:

Crawlability issues:

• Broken links (404 errors)
• Redirect chains
• Blocked resources in robots.txt
• XML sitemap errors

Site speed:

• Slow loading pages
• Large image files
• Unoptimized code

Mobile issues:

• Not mobile-friendly
• Mobile usability errors

How to fix:

1. Run site audit (Screaming Frog, Semrush, Ahrefs)
2. Fix broken links
3. Optimize images and code
4. Ensure mobile responsiveness
5. Submit updated sitemap to Google

Why it matters: Technical issues prevent link equity from flowing properly, potentially suppressing DA

6. Be Patient and Consistent

DA improves slowly:

• New backlinks take 4-6 weeks to be indexed by Moz
• DA updates monthly (Moz Link Index updates)
• Meaningful DA increases take 3-6 months of consistent effort
• Don’t expect overnight changes

Realistic improvement timeline:

• Month 1-3: +2-5 DA points (if active link building)
• Month 4-6: +5-10 DA points
• Month 7-12: +10-15 DA points
• Year 2+: Diminishing returns (harder to increase as DA rises)

Consistency matters more than intensity:

• 5 quality backlinks per month > 50 low-quality links once
• Regular content publishing > sporadic bursts
• Steady growth > quick fixes

Implementing comprehensive SEO strategies for local businesses helps build domain authority through locally relevant backlinks and citations that strengthen overall site authority.

Common Domain Authority Myths

Myth #1: “DA is a Google Ranking Factor”

Reality: Google does not use Domain Authority in its algorithm. DA is Moz’s proprietary metric.

Why the confusion: DA correlates with rankings because both DA and Google consider similar factors (backlinks, authority). But correlation ≠ causation.

Truth: Improving DA-influencing factors (quality backlinks, content) improves Google rankings. The DA score itself is irrelevant to Google.

Myth #2: “Higher DA Guarantees Higher Rankings”

Reality: DA is domain-level; rankings are page-level and query-specific.

Example:

• DA 30 site with perfect content for “best coffee grinders” can outrank
• DA 60 site with thin content on same topic

What matters more for rankings:

• Page-level authority (PA)
• Content quality and relevance
• User experience signals
• Backlinks to specific page
• Technical SEO

Myth #3: “My DA Dropped, Google Penalized Me”

Reality: DA fluctuations are normal and don’t indicate penalties.

Common causes of DA changes:

• Moz index update (affects all sites)
• Algorithm adjustment by Moz
• Competitors gained more backlinks (relative scoring)
• Lost backlinks (site closed, removed link)

How to know if it’s a real problem:

• Check Google Search Console for manual actions
• Monitor actual organic traffic (if traffic stable, DA drop doesn’t matter)
• Compare competitors’ DA (if all dropped, likely index update)

Myth #4: “I Can Improve DA in 30 Days”

Reality: Meaningful DA improvements take 3-6+ months.

Why it’s slow:

• Moz updates index monthly
• New backlinks take weeks to be discovered
• Quality link building takes time
• Logarithmic scale means higher DA = exponentially harder

Red flag: Services promising “DA 40 in 30 days” likely use spammy tactics that can harm your site long-term.

Myth #5: “More Backlinks Always = Higher DA”

Reality: Quality > quantity. 10 links from DA 60 sites > 100 links from DA 5 sites.

Why low-quality links don’t help:

• Moz weights links by source authority
• Spammy links can increase spam score
• Google may penalize manipulative link schemes

Domain Authority vs. Other Metrics

Moz DA vs. Ahrefs DR (Domain Rating)

Similarities:

• Both predict ranking potential
• Both are 1-100 scales
• Both focus on backlink profiles
• Both are comparative metrics

Differences:

Factor	Moz DA	Ahrefs DR
Index size	Smaller (40B pages)	Larger (200B+ pages)
Update frequency	Monthly	Daily/weekly
Link database	Link Explorer Index	Ahrefs Index
Calculation	40+ factors, ML-based	Backlinks + referring domains
Emphasis	Link quality + trust	Link quantity + referring domains

Which is “better”:

• Ahrefs DR updates more frequently
• Ahrefs has larger index (finds more backlinks)
• Moz DA considers more quality factors
• Both are useful; use whichever tool you have

Typical variance:

• A site might be DA 45 and DR 50
• Or DA 40 and DR 35
• Don’t expect identical scores

Moz DA vs. Google PageRank

What was PageRank: Google’s original authority metric (1-10 scale), discontinued publicly in 2016.

Key differences:

• PageRank was official Google metric
• DA is third-party prediction
• PageRank is still used internally by Google (we just can’t see scores)
• DA is publicly visible

Why PageRank was discontinued: Google wanted to discourage obsessing over single metrics instead of holistic SEO.

How Often Should You Check Domain Authority?

Recommended Checking Frequency

Monthly: Ideal for most sites

• Aligns with Moz index updates
• Shows gradual progress
• Not so frequent you obsess

Quarterly: Sufficient for established sites

• If not actively building links
• Focus on long-term trends
• Less noise from normal fluctuations

After major changes:

• After link building campaign
• After removing toxic backlinks
• After site migration or restructure

Too often (daily/weekly):

• DA doesn’t update that frequently
• Can cause unnecessary anxiety
• Wastes time better spent on actual SEO

Tracking DA Over Time

Create tracking spreadsheet:

Date	DA	PA (Homepage)	Linking Root Domains	Notes
Jan 2026	32	38	125	Started guest posting
Feb 2026	33	38	142	+17 linking domains
Mar 2026	35	40	168	Published research study

What to track alongside DA:

• Organic traffic (Google Analytics)
• Keyword rankings (for target terms)
• Backlink profile growth
• Page authority of key pages

Focus on trends, not numbers:

• Steady upward trend = good
• Fluctuations within 3-5 points = normal
• Sustained decline + traffic drop = investigate

Frequently Asked Questions

Final Thoughts: Using Domain Authority Effectively

Domain Authority is a valuable tool for SEO professionals and website owners, but only when used correctly as a comparative metric and progress indicator rather than an obsession or end goal. Your DA score is a symptom of your SEO health, not the disease to cure.

Best practices for using DA:

1. Compare, don’t fixate: Use DA to compare your site to direct competitors, not to judge absolute quality

2. Track trends: Monitor DA changes over months/quarters to see if SEO efforts are working

3. Prioritize actions over numbers: Focus on building quality links and content, not manipulating the score

4. Remember it’s one metric: DA is useful but incomplete—also track traffic, rankings, conversions

5. Don’t chase perfection: A DA 40 site consistently producing value beats a DA 60 site with mediocre content

Your action plan:

1. Check current DA using Moz Link Explorer (free)
2. Audit backlink profile to identify strengths/weaknesses
3. Set realistic goals based on niche and site age (aim for +10-15 DA over 6-12 months)
4. Create link-worthy content (comprehensive guides, original research, tools)
5. Implement ethical link building (guest posts, digital PR, broken link building)
6. Fix technical issues that prevent link equity flow
7. Track progress monthly alongside traffic and rankings
8. Be patient and consistent (meaningful DA growth takes 6+ months)

Remember: The businesses winning online focus on serving their audience exceptionally well—creating valuable content, earning natural links through excellence, and building genuine authority. Domain Authority increases as a natural byproduct of doing SEO right, not as a goal in itself.

Your DA number is useful feedback, but your actual authority is measured by whether people find you, trust you, and choose you over competitors. Focus on becoming genuinely authoritative in your niche, and the metrics will follow.