CAPTCHA & Bot Protection
3,100 of the 1,000,000 top sites in our Tranco top-1M census run AWS WAF CAPTCHA (0.3%). Amazon's CAPTCHA challenge product, part of AWS WAF's bot-mitigation features. Detection is homepage-level HTML/header fingerprinting, so a site can run AWS WAF CAPTCHA on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | amazon.com | #25 (Tranco) | Find emails |
| 2 | imdb.com | #237 (Tranco) | Find emails |
| 3 | appsflyer.com | #302 (Tranco) | Find emails |
| 4 | amazon.co.uk |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| broadlinenationalstocknumbers.com | #217,116 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| cgg.org | #217,461 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| nsncentric.com | #217,478 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| ibarakiguide.jp | #217,866 | AWS WAF, Amazon CloudFront, Amazon Route 53 | Find emails |
| razmerkoles.ru | #218,074 | Amazon Route 53, Google Analytics, Google Tag Manager + 1 more | Find emails |
| findmycollege.com | #218,397 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| versiti.org | #219,444 | ASP.NET, AWS WAF, Azure API Management + 13 more | Find emails |
| amazingtalker.fr | #219,713 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| asapmarineparts.com | #220,309 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| thedistributionpro.com | #220,342 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| primensnsupplies.com | #220,387 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| hotala.ca | #220,466 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| asap-logisticsolutions.com | #220,555 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| mdba.gov.au | #220,771 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| games4sale.io | #220,797 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| clickaerospace.com | #221,043 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| smartbuyglasses.it | #221,215 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| nsnmatrix.com | #221,317 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| pando.life | #221,403 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| gamedeals.club | #221,536 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| logisticsarc.com | #221,677 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| cityline.com | #221,995 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| christies.com.cn | #222,051 | Adobe Audience Manager, Adobe Experience Cloud (Launch), Adobe Target + 7 more | Find emails |
| onlinespares360.com | #222,137 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| alzheimers.gov | #222,274 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
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 →