Compare Like with Like
Moz defines DA as comparative. Compare relevant domains using the same provider and period instead of applying a universal good-score band.
Use this single-domain Domain Authority checker and DA PA checker to check Moz Domain Authority, Page Authority, and available Spam Score. No account required; Bulk, export, and history are not included.

WHAT IS DA
Moz Domain Authority is a 1–100 machine-learning score predicting how likely a domain is to rank relative to competitors. It uses Moz's link index and multiple factors, with backlink data playing a major role. DA is comparative, can fluctuate as the model and web change, and is not a Google ranking factor.
Moz defines DA as comparative. Compare relevant domains using the same provider and period instead of applying a universal good-score band.
Domain Authority summarizes how likely a domain is to rank relative to competitors in Moz's model. It is not a Google ranking factor.
Page Authority applies Moz's relative ranking model to a specific page. A root-domain request and a page-level request answer different questions.
Domain Authority (DA) is Moz's metric that predicts ranking potential on a 1–100 scale. Domain Rating (DR) is Ahrefs' metric that measures backlink strength on a 0–100 scale. Both are useful but use different algorithms. Our free DA checker uses Moz data, while our DR checker uses Ahrefs data.
HOW TO USE
Enter one public domain to request Moz DA and PA through the current third-party provider. Compare the result with relevant competitors using the same data source. A score can be unavailable, and the checker does not provide Bulk, export, or historical tracking.
Enter one public domain, such as moz.com. The checker requests the currently available DA and PA observation from its third-party provider.
When available, the result separates the domain-level DA observation from the PA observation returned for the requested target. A provider can also return no score or fail temporarily.
Compare relevant competitors with the same provider and during the same period. Treat a difference as a prompt to inspect pages and links, not as proof that one site will outrank another.
WHY USE
DA can be a useful relative comparison when the provider and observation period are held constant. It is not a Google ranking factor, a complete link audit, or a guarantee that one domain will outrank another.
Use DA as Moz's relative prediction, then validate real search performance in Search Console. Do not convert a score into a ranking guarantee.
Compare relevant competitors with the same provider and period. A score gap can suggest where deeper page and backlink research may be useful.
Use DA as one screening clue, then inspect editorial relevance, the linking page, audience, placement, and actual traffic before pursuing a link.
Record comparable observations separately if you need a trend. This checker does not provide score history, and a DA change alone does not prove an SEO action caused it.
Use the DA PA checker for one public domain to request Moz DA, PA, and available Spam Score through the current third-party provider. No account or credit card is required. This website authority checker is not a Bulk DA PA checker and does not provide export or score history.
FAQs
Related Website Metrics
Compare several third-party website metrics while keeping each provider, scope, and limitation separate:
Use the free DR checker for a current observation, compare domains in Bulk, or display the latest Stored DR from your Domain Listing with an optional badge.