I spent my first year in SEO chasing Domain Authority like it was a high score in an arcade game. Every morning: check the number, refresh, obsess.
It took a penalized client site and a very uncomfortable call with their CMO before I understood what DA actually measures — and more importantly, what it doesn’t.
Here’s what I’ve learned after a decade of watching this metric mislead beginners and quietly guide the decisions of people who know how to use it.
What Domain Authority Actually Is
Domain Authority is a search engine ranking score developed by Moz that predicts how likely a website is to appear in search engine results. The score runs from 1 to 100, with higher numbers indicating a greater likelihood of ranking. If you’ve ever wondered “what is domain authority and why do SEO people keep talking about it” — this is the short answer: it’s a prediction engine for ranking potential.
Moz introduced the metric to approximate something Google has never made public: how much trust and authority a domain carries in Google’s eyes. They built it by training a machine learning model on actual search results, reverse-engineering which signals correlate most strongly with top positions.
Here’s the part most people miss: DA is a comparative metric, not an absolute one. A DA of 45 means nothing in isolation. It only becomes useful when you stack it against the domains you’re actually competing with in the SERPs. This distinction matters — and it’s the reason most DA-related frustration comes from treating the number as a goal rather than a compass.
How Domain Authority Is Calculated
Moz overhauled their algorithm in 2019 with what they called Domain Authority 2.0. The old version used a relatively straightforward linear model. The new one runs on a neural network trained against real Google search results.
The system weighs over 40 different signals, but the heavy hitters break down into a few categories.
Linking root domains matter more than raw backlink count. A thousand links from one site count as one linking root domain. Moz’s own documentation emphasizes this: diversity of your link profile carries more weight than volume. Ahrefs’ research found that 66.31% of pages across the web have zero backlinks, and another 26.29% have links from just three websites or fewer. That means roughly 92% of all content on the internet has an almost non-existent link profile.
Link quality and relevance feed directly into the score. A single editorial link from a relevant publication in your niche pushes the needle more than dozens of directory submissions or blog comment links. DA 2.0 specifically incorporated Moz’s Spam Score to detect and discount manipulative link patterns.
The logarithmic scale trips up everyone at first. Moving from DA 20 to DA 30 is dramatically easier than climbing from DA 70 to DA 80. Think of it like the Richter scale for earthquakes — each increment represents an exponentially larger leap in the underlying signals. New sites often start in the single digits and can reach DA 20-30 with basic SEO hygiene and a handful of quality links. Getting above DA 60 typically requires years of sustained effort and hundreds of referring domains.
MozRank and MozTrust still factor in, though Moz has been less vocal about these sub-metrics since the DA 2.0 update. MozRank reflects your link popularity (similar to a simplified version of Google’s original PageRank concept), while MozTrust traces link chains back to trusted seed sites — government domains, university sites, and established news organizations.
One thing worth noting: Domain Authority applies to the entire domain. Individual pages have their own metric called Page Authority (PA), which predicts ranking strength at the URL level. A new blog post on a DA 60 site might have a PA of 15 until it earns its own links. The distinction matters when you’re evaluating specific ranking opportunities rather than overall site health.
Domain Authority vs. Domain Rating: They’re Not the Same Thing
I get asked about this distinction at least once a week. Domain Authority (DA) is Moz’s metric. Domain Rating (DR) is Ahrefs’ metric. They both run on 1-100 scales. They both involve backlinks. And they often produce wildly different numbers for the same site.
The core difference: DA tries to predict ranking potential using 40+ signals including spam detection and content quality indicators. DR focuses almost exclusively on backlink profile strength — how many unique domains link to you and how strong those linking domains are.
In practice, this means a site with a clean, diverse link profile but thin content might score higher on DR than DA. A site with fewer but more topically relevant links and strong on-page signals might score higher on DA than DR.
Neither is “better.” DR is sharper for evaluating link building campaigns specifically. DA gives a broader read on overall competitive positioning. I use both. Most experienced SEOs do.
Google, for the record, uses neither. Both are third-party approximations of something only Google’s algorithm truly knows.
What Counts as a Good Domain Authority Score
There’s no universal target. Benchmarking against competitors is the only approach that produces actionable insight.
That said, general ranges exist and they’re useful for orientation:
- DA 1-20: New websites, fresh domains, or sites with minimal link building. Most sites on the internet fall here.
- DA 20-40: Small businesses, niche blogs, and local companies with some SEO effort in place.
- DA 40-60: Established businesses, popular industry publications, and sites with active link acquisition programs.
- DA 60-80: Major brands, large media outlets, and well-funded companies with extensive backlink profiles.
- DA 80-100: Household names. Google.com. Wikipedia. The New York Times. Apple.
A DA of 35 might be dominant in a niche B2B vertical where competitors sit at DA 20-28. That same DA 35 is invisible if you’re competing against sites in the DA 60+ range.
Backlinko’s study of 11.8 million search results found that the average Domain Authority Score among the top 10 Google results was 67.42. The number one position averaged 3.8x more backlinks than positions two through ten. But plenty of pages outrank higher-DA competitors when they nail search intent and topical relevance.
Why Domain Authority Matters (Even Though Google Ignores It)
Let me be direct: Domain Authority is not a Google ranking factor. Google’s own representatives have confirmed this repeatedly. Google does not look at your Moz DA score when deciding where to rank your pages.
So why does it still matter?
Because DA approximates many of the same signals Google does care about. Quality backlinks, domain trust, link diversity, spam-free profiles — these are things that both Moz’s algorithm and Google’s algorithm reward, just through different mechanisms.
Here’s how DA earns its place in an SEO workflow.
Competitive benchmarking. Before targeting any keyword, I check the DA of sites currently ranking on page one. If the top five results are all DA 70+ and my site is DA 25, I’m probably not winning that keyword in the next six months. DA gives a fast read on competitive difficulty that keyword difficulty scores alone can’t provide.
Link building qualification. When vetting potential link partners or guest post targets, DA serves as a quick quality filter. A link from a DA 55 site in your niche carries more weight than one from a DA 12 site with no topical relevance.
Progress tracking over time. DA moves slowly and deliberately. Watching it climb from 18 to 24 to 31 over a year tells you that your link acquisition and content strategy are working at a foundational level — even when individual keyword rankings fluctuate day to day.
There’s also a less obvious use case that agencies rely on heavily: client communication.
DA provides a single number that non-technical stakeholders can understand. Telling a VP of marketing “your domain authority increased by 8 points this quarter” lands differently than handing them a spreadsheet of 47 keyword ranking changes.
It shouldn’t be the only metric you report, but it’s a useful anchor for conversations about long-term SEO investment.
The Biggest Misconceptions About Domain Authority
I’ve seen every version of these mistakes. Some are harmless misconceptions. Others cost real money and months of wasted effort.
“A higher DA means higher rankings.” Not directly. A DA 70 site can absolutely get outranked by a DA 30 site if the lower-DA page has better content, tighter keyword targeting, and stronger topical authority for that specific query.
“DA is stable and permanent.” DA is a relative metric. Moz recalculates it regularly, and your score can drop even when you haven’t done anything wrong. If competing sites gain links faster than you, or if Moz updates their algorithm, your DA shifts. This is by design, not a penalty.
“You can buy your way to high DA.” Link schemes still exist, and they still inflate DA temporarily. But Moz’s Spam Score integration in DA 2.0 catches most of it. More importantly, Google’s own spam detection is far more sophisticated. I’ve watched sites buy their way to DA 50 and then lose 80% of their organic traffic in a core update. The number moved. The rankings didn’t.
“DA is the only authority metric that matters.” In 2026, topical authority increasingly outweighs domain-wide authority signals for informational queries. Google’s algorithms reward genuine expertise on specific subjects. A DA 25 site with deep, comprehensive coverage of one topic can outperform a DA 60 site with shallow content spread across dozens of unrelated verticals. I saw a cybersecurity blog with DA 28 consistently outrank general tech publications with DA 65+ because every page on that site was about one thing, and Google recognized it.
How to Actually Improve Your Domain Authority
DA isn’t something you optimize directly — that’s the wrong frame entirely. You optimize the signals it measures, and the score follows as a byproduct. Here’s what actually moves the needle based on what I’ve seen work across hundreds of campaigns.
Build Links That Moz’s Algorithm Respects
The backlink profile is still the dominant factor. But “build backlinks” is useless advice without qualification.
Focus on earning links from unique root domains rather than multiple links from the same sites. Guest posting on relevant industry publications, producing original research that gets cited, and digital PR campaigns that earn editorial links — these are the channels that consistently produce DA growth.
Ahrefs data shows that 96.55% of content gets zero organic search traffic. The content that does earn traffic and links tends to be original research, comprehensive guides, and tools — not thin blog posts repurposing what already exists.
Clean Up Toxic Links
Moz’s Spam Score directly impacts your DA calculation. Use Google Search Console and Moz’s Link Explorer to audit your backlink profile quarterly. Look for patterns: sudden spikes in links from unrelated foreign-language sites, links from pages with DA under 5, or links with over-optimized anchor text.
Moz classifies spam scores of 1-30% as low risk, 31-60% as medium risk, and 61-100% as high risk. If you’re acquiring links with spam scores above 30%, you’re probably doing more harm than good.
Fix Your Internal Linking Architecture
Most sites completely ignore this, and the data shows it. A Zyppy study of 23 million internal links across 1,800 websites found that 82% of potential internal linking opportunities go completely unused.
Internal links distribute authority throughout your site. When you earn an external backlink to your homepage, that authority only reaches your deeper pages if internal links create pathways for it to flow. Pages with 40-44 internal links received four times more Google search clicks than pages with 0-4 internal links in the same study.
And unlike earning external backlinks — which requires outreach, relationship building, and patience — internal links are entirely within your control. That makes this one of the fastest wins in SEO, full stop.
Tools like Linkter automate the process of identifying and building internal links, turning what used to be hours of manual work into something you can execute in minutes.
If you’re serious about distributing link equity efficiently across your site, automating internal linking is one of the highest-ROI moves you can make.
Publish Content That Earns Links Naturally
Stop publishing content designed to rank and start publishing content designed to get cited. Original surveys, proprietary data analysis, industry benchmarks, and tools generate backlinks organically because other writers need to reference them.
One original research piece that earns 50 referring domains will move your DA more than 100 thin blog posts that earn nothing.
Get Your Technical Foundation Right
DA reflects overall site quality signals, and technical SEO contributes to that picture. HTTPS encryption, mobile responsiveness, clean crawl architecture, and fast load times aren’t just user experience factors — they’re trust signals that feed into how Moz (and Google) assess your domain.
I’ve audited sites where fixing broken canonical tags and cleaning up redirect chains produced a 3-4 point DA jump within two update cycles. Not because the technical fixes earned links, but because they allowed Moz’s crawler to properly assess the link equity the site already had.
Domain Authority in 2026: Where the Metric Is Heading
The SEO industry’s relationship with DA is shifting. Topical authority — how deeply and comprehensively a site covers specific subjects — has become a stronger predictor of ranking success than domain-wide authority metrics for many query types.
Moz’s algorithm has responded. The 2026 iteration filters for what Moz calls “spam-resistant equity” and can detect AI-generated link profiles. Link velocity consistency matters more than ever — steady, natural acquisition patterns outperform sudden bursts from coordinated campaigns.
None of this makes DA obsolete. But it does settle DA into a more honest role: one signal among several, which is what it was always supposed to be. The practitioners who get the most value from DA are the ones who never treated it as a scoreboard in the first place. They treated it as a thermometer — a way to check the temperature of their SEO efforts relative to the competition.
That’s the right way to use it. Check the number. Understand what it’s telling you about your link profile, your competitive position, and the trajectory of your site.
Then close the tab and go build something worth linking to.