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 |
|---|---|---|---|
| crowngreenlogin.net | #155,450 | Amazon CloudFront, Cloudflare, Cloudflare Bot Management + 10 more | Find emails |
| biodiversity.org.au | #155,472 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| unisportstore.fr | #156,100 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| espn.co.cr | #156,318 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| indiecampers.com | #156,508 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| aij.or.jp | #156,904 | AWS WAF, Amazon Web Services, DigiCert | Find emails |
| unisport.dk | #157,935 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| stihl.fr | #157,980 | AWS WAF, Amazon CloudFront, Microsoft 365 | Find emails |
| rentbyowner.ca | #158,075 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| espn.com.uy | #158,292 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| estuda.com | #158,309 | AWS WAF, Adobe Fonts (Typekit), Amazon (ACM) + 15 more | Find emails |
| empleate.com | #158,351 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| orchard.com | #158,608 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 15 more | Find emails |
| mmoo.mobi | #158,637 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| fashiola.de | #159,430 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| globalrescue.com | #159,808 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| menta.work | #159,838 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| internetofcomponents.com | #160,495 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| krankenkassen.de | #160,534 | AWS WAF, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| fantasticfiction.co.uk | #161,267 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| fashiola.co.uk | #161,628 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| automatizebuying.com | #161,883 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| vehiclehistory.us | #162,400 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| meilleureslocations.fr | #162,506 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| asap-purchasing.com | #162,645 | AWS WAF, Amazon (ACM), 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 →