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 |
|---|---|---|---|
| exetercityfc.co.uk | #456,237 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| latter-blum.com | #457,023 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| xxlhoreca.com | #457,751 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| allianceonline.co.uk | #459,367 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| witt.fr | #459,856 | AB Tasty, AWS WAF, Amazon (ACM) + 3 more | Find emails |
| whatsonclearance.com | #460,961 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| primecables.ca | #461,175 | AWS WAF, Amazon Route 53, Amazon Web Services | Find emails |
| aerospaceaces.com | #461,230 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| aviationdistribution.com | #461,556 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| sevillasecreta.co | #461,969 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| mediaincanada.com | #462,069 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| legionsafety.com | #462,357 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| datamites.com | #463,505 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| holidaygems.co.uk | #463,785 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| stihl.es | #464,256 | AWS WAF, Amazon CloudFront, Microsoft 365 | Find emails |
| montanatravelandtourism.com | #464,357 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| bestfoodtravel.com | #464,536 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| cff.ch | #464,538 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| vivreici.com | #464,786 | AWS WAF, Let's Encrypt | Find emails |
| sugarwish.com | #465,212 | Amazon (ACM), Amazon Route 53, Attentive + 20 more | Find emails |
| stayforlong.fr | #465,336 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| parkrun.co.za | #466,150 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| ayende.com | #466,239 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| coupons4him.com | #466,824 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| daedamo.com | #466,879 | AWS WAF, Amazon (ACM), Amazon Route 53 + 8 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 →