How to Find the Domain Authority of a Website

Domain Authority (DA) is one of those metrics that gets thrown around constantly in SEO conversations — but a surprising number of people aren't sure how to actually check it, or what they're looking at when they do. Here's a clear breakdown of what DA is, how to find it, and what the number actually tells you.

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 logarithmic scale from 1 to 100 — higher scores indicate stronger ranking potential.

A few important clarifications right away:

• DA is not a Google metric. Google doesn't use it, confirm it, or endorse it.
• It's a third-party estimate based on factors like the number and quality of inbound links pointing to a domain.
• It's most useful as a comparative tool — measuring one site against another, or tracking your own site's progress over time.

Similar metrics exist under different names: Domain Rating (DR) from Ahrefs, Authority Score from Semrush. These are all proprietary — they're calculated differently and won't always agree with each other.

How to Check Domain Authority 🔍

Method 1: Moz Link Explorer (Free with Limits)

The most direct way to check DA is through Moz's own tools, since they created the metric.

1. Go to moz.com/link-explorer
2. Enter the domain URL in the search bar
3. Hit analyze — you'll see the DA score, along with Page Authority (PA), linking domains, and inbound links

Free accounts get a limited number of searches per month. A paid Moz Pro subscription removes those limits and adds deeper link analysis.

Method 2: MozBar Browser Extension

MozBar is a free Chrome extension from Moz that overlays DA and PA scores directly in your browser as you browse websites or review search results.

• Install from the Chrome Web Store
• Sign in with a free Moz account
• DA scores appear automatically on any page you visit or any SERP you browse

This is particularly useful for quickly evaluating competitor sites or vetting link-building prospects without opening a separate tool.

Method 3: Bulk DA Checkers

If you need to check multiple domains at once — useful for link prospecting or competitor audits — several tools offer bulk lookup:

Third-party free checkers often pull data from Moz's API, so you may see DA scores on tools you wouldn't expect. Just verify where their data comes from.

Method 4: SEO Platform Dashboards

If you're already using an SEO platform like Ahrefs, Semrush, or Mangools, your domain authority equivalent will appear in the main dashboard when you enter a site. These platforms use their own scoring systems — not Moz's DA — so the number will differ, sometimes significantly.

What the Score Actually Means

A DA score doesn't exist in a vacuum. Context matters enormously. ⚖️

General benchmark ranges (approximate, not guarantees):

• 1–20: New sites, low-authority blogs, or sites with few backlinks
• 21–40: Developing sites with some established link profiles
• 41–60: Mid-range authority — competitive in many niches
• 61–80: Strong authority — typically larger brands or well-established publications
• 81–100: Major platforms like Wikipedia, Reddit, major news outlets

Because the scale is logarithmic, moving from DA 20 to DA 30 is considerably easier than moving from DA 60 to DA 70. Growth gets harder the higher you climb.

What Affects a Site's Domain Authority Score

DA is primarily driven by backlink profile quality, but several factors shape it:

• Number of unique referring domains — links from many different sites carry more weight than many links from the same site
• Authority of linking domains — a link from a high-DA site passes more authority than one from a low-DA site
• Link relevance — contextually relevant links are generally more valuable
• Internal link structure — how well pages on your own site link to each other
• Spam score — Moz also tracks toxic or spammy links that can drag scores down
• Freshness of link data — Moz updates its index regularly, so scores can shift as new links are discovered or old ones are removed

Notably, content quality, traffic, and social signals don't directly factor into DA — though they can indirectly drive the backlinks that do.

Why the Same Site Gets Different Scores on Different Tools

This confuses a lot of people. You check a site on Moz and get DA 45. You check the same site on Ahrefs and get DR 38. Semrush shows Authority Score 51.

All three tools are correct — they're just measuring different things using different methodologies and different link databases. No tool has a complete picture of the web's link graph, and each indexes links at different speeds and depths.

This isn't a flaw — it's just the reality of third-party metrics. Consistency within a single tool matters more than the absolute number.

The Variable That Changes Everything 🎯

How useful DA is depends heavily on what you're trying to do with it. A content marketer evaluating guest post opportunities needs a different threshold than an agency benchmarking a new client's site against competitors. An e-commerce site in a low-competition niche might rank comfortably with a DA in the 20s, while a site targeting high-competition finance keywords might need DA 60+ just to get traction.

Your niche, your competitors' DA scores, your link-building resources, and your specific ranking goals all determine what a DA score means in practice — for your site specifically.