At Webs of the World, we use Domain Authority as one of our main criteria for evaluating and listing websites. In this guide, we’ll explain exactly what it is, how it works, and why it matters — whether you own a website or simply want to understand the web better.

What Is Domain Authority?

Domain Authority (DA) is a score developed by Moz, ranging from 1 to 100, that estimates how likely a website is to rank well in search engine results. The higher the score, the stronger the website’s overall presence on the web.

Think of it like a reputation score for websites. For example, a brand new site might start with a DA of 1, while established giants like Wikipedia or Google sit near 100.

How Is Domain Authority Calculated?

DA is not a metric used directly by Google — it’s a third-party score created by Moz. Moz calculates it by analyzing dozens of factors, the most important being:

• Backlinks pointing to your site — the more websites that link to you, the better
• Quality of those linking websites — a link from a trusted news outlet carries far more weight than one from a random blog
• Unique linking root domains — the total number of separate websites that link to yours
• Overall link profile health — Moz also checks for toxic or spammy links that could hurt your score

Moz uses a logarithmic scale for this calculation. As a result, moving from a DA of 10 to 30 is much easier than climbing from 70 to 90.

What’s Considered a Good Domain Authority Score?

There’s no universal “good” score — it depends on your industry and the competition you’re up against. However, here’s a general guide:

In other words, the most important thing is not your raw score, but how it compares to the sites competing with you in search results.

Why Does Domain Authority Matter?

DA is one of the clearest signals of a website’s credibility and strength on the web. Here’s why it matters in practice:

For website owners: A higher DA generally means better chances of ranking for competitive keywords, more organic traffic, and stronger overall visibility.

For users and researchers: DA helps you quickly evaluate how trustworthy an established website is before spending time reading its content.

For directories like ours: At Webs of the World, we use DA as one of our key filters when curating which sites make the list. Additionally, it helps us identify websites that have genuinely earned their reputation — not just ones that look good on the surface.

How Can You Check a Website’s Domain Authority?

Fortunately, checking DA is completely free and takes only a few seconds. The best tools to use are:

• Moz Link Explorer — the original DA checker at moz.com
• MozBar — a free Chrome extension that shows DA directly in your browser as you browse
• Ahrefs Website Authority Checker — uses a similar metric called Domain Rating (DR)
• SEMrush — offers its own Authority Score alongside other SEO data

Simply enter any website URL into one of these tools and you’ll see the score instantly.

Can You Improve Your Domain Authority?

Yes — but it takes time and consistent effort. Fortunately, the strategies that improve DA also improve your overall SEO. The most effective approaches are:

1. Earn high-quality backlinks — get reputable websites to link to your content naturally
2. Create original, valuable content — content worth linking to attracts links without you having to ask
3. Remove or disavow toxic links — low-quality links pointing to your site can actively hurt your DA
4. Fix technical SEO issues — site speed, mobile-friendliness, and proper indexing all play a role
5. Be patient — DA improvements happen over months, not days

Domain Authority vs. Page Authority: What’s the Difference?

While Domain Authority measures the strength of an entire website, Page Authority (PA) measures the strength of a single page. In other words, you might have a site with a DA of 40, but a specific article with a PA of 60 if that page has earned many links on its own.

Both metrics are useful. DA gives you the big picture, while PA tells you how competitive a specific page is against others targeting the same keyword.

Final Thoughts

Domain Authority is one of the most useful shortcuts for evaluating how established a website is on the internet. It’s not perfect — and Google doesn’t use it directly — but it gives you a fast, reliable signal of a site’s credibility.

At Webs of the World, we review DA alongside design quality, user experience, and content value when deciding which websites make our directory. Therefore, it’s one piece of a larger puzzle — but an important one.

Want to know if your website could be listed in our directory? Check out our About Us page to learn how we evaluate sites, or contact us to make a suggestion.

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