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 |
|---|---|---|---|
| rexby.com | #183,457 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| tiancip600601.com | #184,277 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| uitinvlaanderen.be | #184,445 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| automatizeelectronics.com | #184,463 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| exto.nl | #184,499 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| arena.gov.au | #184,558 | Amazon CloudFront, Azure DNS, Font Awesome + 15 more | Find emails |
| asapgroundsupportequipment.com | #184,766 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| oneclickaviation.us | #184,786 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| luulla.com | #184,865 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| integratedaviationhardware.com | #184,909 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| calisthenics-parks.com | #184,940 | AWS WAF, Cloudflare, Cloudflare edge/CDN + 1 more | Find emails |
| sourcing3sixty.com | #185,068 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| smartbuyglasses.co.uk | #185,203 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| restposten.de | #185,245 | AWS WAF, Amazon (ACM), Amazon Route 53 + 12 more | Find emails |
| hsbc.co.id | #185,353 | Amazon CloudFront, Apache, DigiCert + 2 more | Find emails |
| citizenportal.ai | #185,500 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| casimba.com | #185,679 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| ewmagazine.nl | #185,813 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| everydayhealth.care | #185,815 | AWS WAF, Amazon Route 53, Amazon Web Services + 2 more | Find emails |
| ferienimhaus.de | #185,849 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| nationalstocknumbershop.com | #186,259 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| dspacedirect.org | #186,295 | AWS WAF, Amazon (ACM), Amazon Route 53 + 2 more | Find emails |
| iabc.com | #186,313 | AOS, ASP.NET, AdZerk (Kevel) + 30 more | Find emails |
| givengain.com | #186,387 | AWS Lambda, AWS WAF, Amazon (ACM) + 14 more | Find emails |
| veritableaviation.com | #186,628 | AWS WAF, Amazon (ACM), Amazon Web Services | 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 →