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 |
|---|---|---|---|
| canterburymedicalpractice.nhs.uk | #929,960 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| funcrash.com | #932,949 | Amazon (ACM), Amazon Route 53, Apache + 14 more | Find emails |
| greenvalleyshealth.nhs.uk | #933,763 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| humbleyard.nhs.uk | #934,543 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| i9bet363.com | #934,591 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| shbet138.love | #943,448 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| stpg66156.cyou | #944,293 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| stpg66498.cyou | #944,294 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| stthomas.nhs.uk | #944,309 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| morrisons.co.uk | #947,935 | Amazon (ACM), Amazon CloudFront, Contentful + 3 more | Find emails |
| adventureneverends.com | #948,169 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| superscale.ai | #949,679 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| evenity.com | #949,783 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| kbharkiv.dk | #950,162 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| hardwareandfasteners.com | #951,605 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| justithardware.com | #952,211 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| watchfinder.nl | #952,212 | AWS WAF, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| b-parts.co.uk | #952,300 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| broxbourne.gov.uk | #952,789 | Amazon (ACM), Cludo, Cookiebot + 9 more | Find emails |
| bookdelivery.co.za | #953,346 | Amazon (ACM), Amazon Route 53, Google Identity Services + 3 more | Find emails |
| sfartscommission.org | #953,600 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| unpluggedweekend.com | #954,012 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| spinrider.com | #954,171 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| ffs.ch | #954,968 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| safelyhq.com | #955,096 | AWS WAF, Amazon Route 53, Amazon Web Services + 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 →