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 |
|---|---|---|---|
| radioformula.com.mx | #72,939 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| vapeclub.co.uk | #73,004 | AWS WAF, Amazon Web Services, DigiCert | Find emails |
| psauction.se | #73,084 | AWS WAF, Amazon (ACM), Amazon Route 53 + 2 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| casai.com |
| #73,254 |
| AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more |
| Find emails |
| englandrugby.com | #73,597 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| hitachikaihin.jp | #73,751 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| marc-o-polo.com | #73,836 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| prospektangebote.de | #73,867 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| espn.com.ec | #73,998 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| parissecret.com | #74,005 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| jobup.ch | #74,242 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| greenbeans.com | #74,393 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| betterhelporg.com | #74,583 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| prestigeonline.com | #74,967 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| latestdeals.co.uk | #75,029 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| sportograf.com | #75,043 | Amazon (ACM), Amazon CloudFront, Amazon Pay + 6 more | Find emails |
| responsibletravel.com | #75,107 | Amazon (ACM), Amazon Route 53, Bootstrap + 12 more | Find emails |
| setlistfm.com | #75,279 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| mytherapist.com | #75,554 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| giraffe360.com | #75,672 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| wbresearch.com | #75,856 | AWS WAF, Amazon (ACM), Amazon Route 53 | Find emails |
| nyiso.com | #75,884 | AWS WAF, Amazon CloudFront, Microsoft 365 | Find emails |
| juara.net | #75,941 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| aktin.cz | #76,273 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| alphacommunity.in | #76,645 | AWS WAF, Akamai Edge DNS, 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 →