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 |
|---|---|---|---|
| nsn-sourcing.com | #291,252 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| demokrata.hu | #291,276 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| iwaspoisoned.com | #291,941 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| ifnmg.edu.br | #292,341 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| aerodefencespares.com | #292,765 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| hardtofindnsn.com | #293,015 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| beslist.be | #293,211 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| shviet999.info | #293,264 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| cowrywise.com | #293,364 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| burton.co.uk | #295,189 | AB Tasty, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| kwiff.com | #295,345 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| b-ok.cc | #295,399 | AWS WAF, Amazon Web Services | Find emails |
| viagogo.es | #296,101 | Affirm, Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| promocatalogues.fr | #296,519 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| shbetaa1.kim | #296,812 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| scaletowin.com | #296,829 | AWS Lambda, Adobe Fonts (Typekit), Amazon CloudFront + 11 more | Find emails |
| gfi.ai | #296,852 | ASP.NET, AWS WAF, Amazon (ACM) + 14 more | Find emails |
| testvets.xyz | #296,865 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| roofingsuperstore.co.uk | #296,997 | AWS WAF, Amazon (ACM), Amazon Route 53 + 2 more | Find emails |
| keepyouflying.com | #297,554 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| hollandandbarrett.be | #297,937 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| fasteneropolis.com | #298,103 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| sparkleapp.com.br | #298,267 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| logcluster.org | #299,308 | Amazon (ACM), Amazon Route 53, Apache + 3 more | Find emails |
| iclr.co.uk | #303,889 | Amazon (ACM), Amazon Route 53, Bluesky + 16 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 →