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 |
|---|---|---|---|
| calisphere.org | #81,409 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| akpk.org.my | #81,509 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| loebclassics.com | #81,903 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| uxtweak.com |
| #81,906 |
| AWS WAF, Amazon (ACM), Amazon CloudFront |
| Find emails |
| rappi.com.ar | #82,096 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| officesupply.com | #82,145 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| midnite.com | #82,710 | Amazon Route 53, Checkout.com, Cloudflare edge/CDN + 5 more | Find emails |
| teencounseling.com | #82,783 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| kl991.com | #82,917 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| saopaulosecreto.com | #82,958 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| cdmxsecreta.com | #83,004 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| startengine.com | #83,135 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| medway.gov.uk | #83,352 | Amazon (ACM), Cludo, Cookiebot + 11 more | Find emails |
| helline.fr | #83,455 | AB Tasty, AWS WAF, Amazon (ACM) + 3 more | Find emails |
| t3kys.com | #83,822 | Cloudflare, DigiCert, Django + 7 more | Find emails |
| leadingcourses.com | #83,825 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| 990k-3.club | #84,267 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| findretro.games | #84,439 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| f8betbb1.vip | #84,462 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| 33win68.com | #84,693 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 79king56.com | #84,704 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| hi1444.com | #84,835 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| mb66e.ink | #84,896 | ASP.NET, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| partyslate.com | #85,110 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| commercialtrucktrader.com | #85,283 | 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 →