Why there's no actual "ban" verdict
AdSense suspension and policy-violation status is private account data that Google exposes only inside the account itself - no public API, crawl, or heuristic can see it from outside, so any tool claiming to check "if a domain is banned" from a URL alone cannot really know that. What this tool checks instead are the publicly visible factors that most often come up in real AdSense approval and policy reviews: a correctly configured ads.txt, a robots.txt that doesn't block Google's ad crawler, a discoverable privacy policy, reasonable homepage content depth, and whether ads are currently rendering at all.
Why ads.txt matters so much for AdSense approval
ads.txt is a publicly crawlable file that declares which ad networks are authorized to sell inventory on your domain - a missing or misconfigured ads.txt is one of the most common, easily fixed reasons legitimate sites see reduced ad revenue or policy flags, since it's specifically designed to let ad buyers and Google verify your site isn't being impersonated elsewhere.
Why a discoverable privacy policy is treated as a real signal
Google's publisher policies explicitly require a privacy policy that discloses data collection and cookie/ad-personalization practices - a site with no discoverable privacy policy page is an easy, concrete policy gap to flag and fix, unlike more subjective content-quality factors that can't be checked automatically.
What this check cannot tell you
Passing every signal here does not guarantee approval or reinstatement, since Google's actual review also weighs content originality and quality, site navigation and user experience, traffic sources, and your account's policy history - all factors that require Google's own internal review and aren't visible to any outside tool.