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 |
|---|---|---|---|
| charltonafc.com | #384,714 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| classicautomall.com | #384,971 | AWS WAF, Amazon (ACM), Amazon Web Services + 2 more | Find emails |
| northdevon.gov.uk | #385,070 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| buyrotableparts.com | #385,128 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| tonerpartner.it | #385,677 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| nemovideo.com | #385,719 | Ahrefs Analytics, Amazon S3, Astro + 9 more | Find emails |
| vatera.com | #385,904 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| viagogo.nl | #386,063 | Affirm, Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| return-it.ca | #386,327 | AWS WAF, Adobe Fonts (Typekit), Amazon Route 53 + 7 more | Find emails |
| refugeerights.org | #386,372 | AWS WAF, Amazon Web Services, Let's Encrypt | Find emails |
| holidayhouses.co.nz | #386,551 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| waldomemea.com | #387,301 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| replacebase.eu | #387,776 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| supersonicaviationparts.com | #388,038 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| hr.ge | #388,254 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| cvent-planner.com | #389,512 | 6sense, Adobe Experience Cloud (Launch), Amazon (ACM) + 16 more | Find emails |
| nsnunlimited.com | #389,596 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| vobis.pl | #390,047 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| wackypacks.com | #390,086 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| oufc.co.uk | #390,131 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| stihl.nl | #390,535 | AWS WAF, Amazon CloudFront, Microsoft 365 | Find emails |
| amentumcareers.com | #390,629 | Amazon (ACM), Amazon CloudFront, Font Awesome + 3 more | Find emails |
| secretmanchester.com | #390,731 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| vanguardmotorsales.com | #390,849 | AWS WAF, Amazon (ACM), Amazon Web Services + 2 more | Find emails |
| broadarrowauctions.com | #390,865 | 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 →