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 |
|---|---|---|---|
| marketingmag.ca | #637,093 | AWS WAF, Amazon Route 53, Amazon Web Services | Find emails |
| aeroprocurementservices.com | #637,782 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| d3hoops.com | #638,174 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| whisperingpinescottages.com |
| #638,697 |
| AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more |
| Find emails |
| gafasworld.es | #639,250 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| vilgain.co.uk | #639,681 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| aerospacedomain.com | #640,566 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| goifl.com | #641,410 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| surgeaviation.com | #641,828 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| enterpriseleague.com | #641,930 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| cagreatamerica.com | #642,235 | AB Tasty, Amazon Route 53, Google Tag Manager + 7 more | Find emails |
| kasama-kankou.jp | #642,955 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| der.sp.gov.br | #643,809 | AWS WAF, Amazon Web Services, Let's Encrypt + 1 more | Find emails |
| theuscaa.com | #643,881 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| thetipplecellar.com | #646,044 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| stayforlong.co.uk | #646,370 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| jaenung.net | #646,678 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| amazon | #648,103 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| trustpilot.co.uk | #648,165 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 | Find emails |
| bizkim.uz | #648,691 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| chisholm.edu.au | #648,768 | ASP.NET, AWS WAF, Adobe Fonts (Typekit) + 10 more | Find emails |
| 79k-799.club | #649,242 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| okking72.com | #649,247 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| secretsydney.com | #649,364 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| dofus-retro.com | #649,656 | 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 →