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.
Other captcha & bot protection
| # | 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 |
|---|---|---|---|
| go99.ist | #889,513 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| goplay02.club | #889,626 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| goplay05.club | #889,627 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| hi1999.com | #890,138 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| hi2022.com | #890,139 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| hi2111.com | #890,140 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| himehina.jp | #890,174 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| k7642.vip | #891,470 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| kl99.guru | #891,904 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| mb66b3.net | #893,293 | ASP.NET, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| mikmc5.buzz | #893,577 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| mobi-gamez.com | #893,722 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| montiboli.com | #893,810 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| oarai-camp.jp | #894,863 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| okking73.com | #894,979 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| pg99hello.cc | #895,668 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| racinggames.club | #896,539 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| rollingmuseums.com | #896,997 | AWS WAF, Amazon Web Services, GoDaddy | Find emails |
| rosamarhotels.com | #897,021 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| shutaf.im | #897,831 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| virusbuster.jp | #900,618 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| walletnest64254065.com | #900,849 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| wow.show | #901,138 | AWS WAF, Amazon (ACM), Amazon Route 53 + 2 more | Find emails |
| yuca.live | #901,573 | AWS WAF, Amazon (ACM), Amazon Route 53 + 2 more | Find emails |
| sjtools.co.uk | #902,700 | AWS WAF, Amazon (ACM), Amazon CloudFront + 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 →