CAPTCHA & Bot Protection
91,344 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9.1%). Google's CAPTCHA/bot-scoring widget, the most widely deployed CAPTCHA by far. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | snapchat.com | #123 (Tranco) | Find emails |
| 2 | apache.org | #125 (Tranco) | Find emails |
| 3 | one.one | #160 (Tranco) | Find emails |
| 4 | w3.org |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| bernama.com | #19,485 | AOS, Apache, Bootstrap + 13 more | Find emails |
| avax.network | #19,517 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 14 more | Find emails |
| pcpitstop.com | #19,539 | Bootstrap, Cloudflare edge/CDN, Font Awesome + 15 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| tikkie.me | #19,569 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| niezalezna.pl | #19,577 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 10 more | Find emails |
| brocardi.it | #19,582 | Apache, Click.io CMP, Cloudflare + 11 more | Find emails |
| travis-ci.com | #19,598 | Atlassian Statuspage, Bootstrap, Cloudflare edge/CDN + 19 more | Find emails |
| football.ua | #19,603 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| frontier.com | #19,618 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai Edge DNS + 22 more | Find emails |
| simplesite.com | #19,645 | Let's Encrypt, Next.js, Varnish + 1 more | Find emails |
| nlcbplaywhelotto.com | #19,658 | Apache, DoubleClick (Google Ads), Google AdSense + 8 more | Find emails |
| ab.pl | #19,661 | Apache, Bootstrap, Font Awesome + 11 more | Find emails |
| webglobe.cz | #19,665 | Bootstrap, Cookiebot, Google Fonts + 9 more | Find emails |
| global-hotspot.ru | #19,693 | All in One SEO, Bootstrap, Font Awesome + 13 more | Find emails |
| society6.com | #19,697 | Adobe Fonts (Typekit), Akamai Edge DNS, Cloudflare edge/CDN + 5 more | Find emails |
| lidl.fr | #19,711 | ASP.NET, Adyen, Akamai Bot Manager + 24 more | Find emails |
| seohost.pl | #19,739 | Google Tag Manager, Gravatar, Hotwire Turbo + 1 more | Find emails |
| postmates.com | #19,795 | Adobe Audience Manager, Amazon Advertising, Arkose Labs + 37 more | Find emails |
| promart.pe | #19,840 | Amazon CloudFront, Bootstrap, Contentful + 12 more | Find emails |
| wpconsent.com | #19,892 | All in One SEO, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| kubtel.ru | #19,899 | Apache, Google Analytics, Google Fonts + 11 more | Find emails |
| ground.news | #19,905 | Algolia, Amazon (ACM), Amazon CloudFront + 13 more | Find emails |
| employeenavigator.com | #19,907 | ASP.NET, Azure DNS, Bootstrap + 8 more | Find emails |
| civiccomputing.com | #19,908 | Civic Cookie Control, Drupal, Let's Encrypt + 3 more | Find emails |
| flsenate.gov | #19,934 | ASP.NET, DigiCert, Google Analytics + 6 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →