Free Moz Domain Authority Checker
Check any website's Domain Authority, Page Authority, Spam Score, and linking root domains — instantly, right from your browser.
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What is Domain Authority?
Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how likely a website is to rank in search engine results, on a scale from 1 to 100. Higher scores correspond to a greater ability to rank. DA is calculated using dozens of factors, including linking root domains and number of total links, all rolled into a single score.
Is a higher DA always better?
Generally yes — but DA is a comparative metric best used to benchmark against competitors in your niche, not as an absolute pass/fail grade. A brand-new site will naturally start near 1.
How is DA different from Page Authority (PA)?
DA predicts ranking strength for an entire domain, while Page Authority (PA) predicts ranking strength for one specific page/URL.
What's a good Spam Score?
Spam Score estimates the percentage of similar sites that were penalized or banned by Google, on a 0–17 scale. Lower is better — scores of 0–4 are typically considered low risk.