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 |
|---|---|---|---|
| wordfence.com | #3,795 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| uscis.gov | #3,867 | Akamai Bot Manager, Apache, Cloudflare + 9 more | Find emails |
| seattletimes.com | #3,883 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| similarweb.com | #3,937 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| espncdn.com | #3,983 | AWS WAF, Amazon CloudFront, Amazon Route 53 | Find emails |
| virginia.gov | #4,176 | ASP.NET, Amazon CloudFront, Apache + 8 more | Find emails |
| dji.com | #4,184 | AOS, AWS WAF, Alibaba Cloud CDN + 24 more | Find emails |
| kompas.com | #4,505 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| kaltura.com | #4,509 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 2 more | Find emails |
| swiggy.com | #4,591 | AWS WAF, Amazon CloudFront, Amazon Route 53 | Find emails |
| moovitapp.com | #4,787 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| coveo.com | #5,127 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| bricklink.com | #5,316 | Amazon (ACM), Cloudflare, Font Awesome + 5 more | Find emails |
| setlist.fm | #5,508 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| game8.co | #5,516 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| rentalcars.com | #5,608 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| tribunnews.com | #5,792 | AWS WAF, Amazon (ACM), Amazon CloudFront + 15 more | Find emails |
| skool.com | #6,013 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| reliefweb.int | #6,126 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| manchestereveningnews.co.uk | #6,569 | AWS WAF, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| discovermagazine.com | #6,662 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| natalie.mu | #6,730 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| 2dehands.be | #6,830 | Adform, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| survicate.com | #6,979 | AWS Lambda, Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| beforward.jp | #7,003 | AWS WAF, Amazon (ACM), Amazon Route 53 + 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 →