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 |
|---|---|---|---|
| mundopoesia.com | #261,634 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| wageningenacademic.com | #261,763 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| lichfielddc.gov.uk | #261,796 | Amazon (ACM), Civic Cookie Control, Google Analytics + 6 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| unlimitedjetspares.com | #261,852 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| truelinkfinancial.com | #263,075 | AWS Lambda, AWS WAF, Amazon Route 53 + 16 more | Find emails |
| integrated-supplychain.com | #263,436 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| integratedpartsonline.com | #263,943 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| eventbrite.ch | #264,636 | AB Tasty, AWS WAF, Amazon (ACM) + 19 more | Find emails |
| kpf.com | #265,000 | AWS WAF, Amazon Route 53, Amazon Web Services + 1 more | Find emails |
| nationalstocknumbersquotes.com | #265,096 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| airpartshop.com | #265,798 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| singlesourceaero.com | #265,991 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| sirvoy.com | #266,922 | AWS WAF, Amazon (ACM), Amazon CloudFront + 14 more | Find emails |
| sketchy.com | #267,282 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 18 more | Find emails |
| rbwm.gov.uk | #267,300 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| sealy.com | #267,351 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| satellitetosubmarineparts.com | #267,413 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| cccaasports.org | #267,439 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| akademiai.com | #267,453 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| bwfc.co.uk | #267,718 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| prettylittlething.com.au | #267,765 | AB Tasty, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| mutualite.fr | #268,370 | AWS WAF, Amazon Web Services, Microsoft 365 + 1 more | Find emails |
| prettylittlething.fr | #268,417 | AB Tasty, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| freeway.com | #269,169 | AWS WAF, Amazon Web Services, GoDaddy | Find emails |
| gabriels.net | #269,506 | AWS WAF, Amazon Web Services | 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 →