DA Checker is an online SEO metrics platform that helps users assess website authority and related domain information. Its bulk checker can analyze up to 1,000 URLs in a submission, reporting Domain Authority (DA), Page Authority (PA), Spam Score, domain age, and, where available, Domain Rating (DR), URL Rating (UR), and historical data. Users paste website addresses into the tool and view results in a report table, with options to filter results and export reports to Excel.

The service offers a free tier without requiring registration, with usage limits, and paid plans that provide higher limits and additional features such as historical data, extra domain information, and ad- and CAPTCHA-free access. DA Checker also provides separate Domain Authority, DR/UR, and Spam Score tools, alongside educational blog resources about SEO metrics. The website states that its checker uses the Moz API to retrieve data and explains how authority scores relate to a website’s potential search ranking. Support and contact options are available for users who need assistance.