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 |
|---|---|---|---|
| syukatsu-kaigi.jp | #59,153 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| vindi.com.br | #59,354 | AWS WAF, Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| buscalibre.com.co | #59,377 | Amazon (ACM), Amazon Route 53, Google Identity Services + 3 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| genealogybank.com | #59,380 | AWS WAF, Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| drake.edu | #59,912 | Adobe Fonts (Typekit), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| hollandandbarrett.nl | #60,149 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| dicoding.com | #60,281 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| buscalibre.pe | #60,323 | Amazon (ACM), Amazon Route 53, Google Identity Services + 3 more | Find emails |
| cfna.com | #60,381 | Amazon CloudFront, Amazon Route 53, Google Tag Manager + 4 more | Find emails |
| toplinecontentmarketing.net | #60,553 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| stillwhite.com | #61,180 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| unisportstore.de | #61,268 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| autodeal.com.ph | #61,295 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| raksul.com | #61,385 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| karenmillen.com | #61,417 | AB Tasty, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| mygov.scot | #61,515 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| lisez.com | #61,656 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| tntsports.com.ar | #61,711 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| parkrun.com | #61,723 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| untsystem.edu | #61,908 | Adobe Fonts (Typekit), Amazon CloudFront, Bootstrap + 10 more | Find emails |
| thinkspain.com | #62,004 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| teamleader.eu | #62,228 | Amazon CloudFront, Amazon Route 53, Cloudflare Bot Management + 8 more | Find emails |
| buscalibre.com.mx | #62,382 | Amazon (ACM), Amazon Route 53, Google Analytics + 4 more | Find emails |
| commonservice.io | #62,422 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| bridgemanimages.com | #62,606 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | 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 →