How to Check Domain Authority: A Complete Guide

Domain Authority (DA) is one of those metrics that shows up constantly in SEO conversations — but knowing what it means and knowing how to actually check it are two different things. This guide walks through both, along with what influences your score and why the same number can mean very different things depending on context.

What Is Domain Authority?

Domain Authority is a score developed by Moz that predicts how likely a website is to rank in search engine results pages (SERPs). It runs on a scale from 1 to 100 — higher scores indicate stronger ranking potential.

A few important things to understand upfront:

• DA is not a Google metric. Google does not use Domain Authority in its algorithm.
• It's a third-party predictive score, not a guarantee of ranking performance.
• It's most useful as a comparative tool — comparing your site against competitors, or tracking your own site's progress over time.

Similar scores exist under different names depending on the tool: Domain Rating (DR) from Ahrefs, Authority Score from Semrush, and Trust Flow from Majestic all attempt to measure similar concepts but use different methodologies.

How to Check Your Domain Authority 🔍

Several tools let you check DA directly — some free, some paid.

Moz Link Explorer (The Original DA Source)

Since Moz created the metric, their tools give you the authoritative DA reading:

1. Go to Moz Link Explorer (moz.com/link-explorer)
2. Enter your domain in the search bar
3. You'll see your DA score, along with Page Authority (PA), linking domains, and inbound links
4. Free accounts get a limited number of queries per month; paid plans offer deeper data

Moz Bar (Browser Extension)

Moz also offers a free Chrome extension called MozBar that overlays DA and PA scores directly on search results pages and websites as you browse. This is useful for quick competitive research without switching tabs.

Ahrefs, Semrush, and Other SEO Platforms

These platforms use their own scoring systems but check similar underlying signals:

Each tool crawls the web independently, so scores between platforms will not match — this is expected and normal, not an error.

Bulk DA Checkers

If you need to check multiple domains at once — useful for link prospecting or competitor audits — several sites offer bulk domain authority checkers. You paste a list of URLs and get scores back in one batch. Quality varies by tool, and most rely on Moz's API for actual DA numbers.

What Factors Influence Domain Authority?

Understanding what moves your DA score helps interpret it more accurately.

Backlink profile is the dominant factor. DA is primarily calculated based on:

• The number of unique domains linking to your site
• The quality and authority of those linking domains
• The relevance of linking pages to your content

A single link from a high-authority, relevant site can carry more weight than dozens of links from low-quality directories.

Other contributing factors include:

• Internal linking structure — how well your pages connect to each other
• Spam score — a high proportion of low-quality or spammy backlinks can suppress DA
• Age and history of the domain — older domains with consistent link acquisition tend to score higher
• Content depth and crawlability — though DA is link-focused, sites that attract natural links tend to have stronger content

One thing DA does not directly measure: your site's technical performance, page speed, or on-page SEO quality. Those factors affect Google rankings but aren't baked into the DA calculation itself.

What's a "Good" Domain Authority Score?

This is where context matters enormously. DA is a relative metric, and what counts as strong depends entirely on your competitive landscape.

• A DA of 30–40 might be highly competitive in a niche local market
• The same score could be considered weak if you're competing against national news sites or established e-commerce platforms with DA scores in the 70–90 range
• Brand new domains typically start near 1 and grow as they earn links

The more useful question isn't "Is my DA good?" but rather "Is my DA higher or lower than the sites I'm trying to outrank?" 📊

Common Mistakes When Interpreting DA

• Obsessing over small fluctuations. DA can shift slightly from month to month as Moz recrawls the web. A drop of 2–3 points isn't necessarily a sign of a problem.
• Comparing DA across different tools. A DR of 45 in Ahrefs and a DA of 38 in Moz are measuring overlapping but distinct things. Don't conflate them.
• Treating DA as a direct Google ranking factor. It correlates with ranking ability but doesn't cause it. Sites with lower DA outrank higher-DA pages regularly when on-page and topical relevance are stronger.
• Ignoring Page Authority (PA). DA measures the whole domain; PA measures individual pages. For specific content ranking goals, PA is often the more actionable number.

The Variables That Change Everything

How DA checks and scores apply to your situation depends on several factors that look different for every site:

• Your niche — competitive industries have higher average DA across the board
• Your link-building history — organic link growth looks different from accelerated campaigns
• Which tool you're using — methodology differences mean your "score" varies by platform
• Your goals — a content creator, an e-commerce store, and a local service business have very different DA benchmarks that matter to them

A site in an early growth phase reads DA differently than an established brand doing competitive analysis. The number on the screen is only as useful as the context you bring to it.