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 |
|---|---|---|---|
| transfermarkt.ro | #130,978 | AWS WAF, Amazon CloudFront, Let's Encrypt + 1 more | Find emails |
| fxshield.co.kr | #131,059 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| optimalworkshop.com | #131,314 | AWS WAF, Amazon Route 53, Amazon Web Services + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| testglovo.com | #131,520 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| fulfillmentbyasap.com | #131,522 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| chaikinanalytics.com | #131,570 | Amazon CloudFront, Amazon S3, Bootstrap + 14 more | Find emails |
| goonhammer.com | #131,656 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| buyaviationparts.com | #131,943 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| tlc-direct.co.uk | #132,339 | AWS WAF, Amazon (ACM), Amazon Route 53 + 2 more | Find emails |
| cam-content.com | #133,252 | ASP.NET, Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| humanitarianresponse.info | #133,344 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| asap-components.com | #133,382 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| street-academy.com | #133,524 | AWS WAF, Amazon Route 53, Amazon Web Services | Find emails |
| buscalibre.us | #134,378 | Amazon (ACM), Amazon Route 53, Google Identity Services + 3 more | Find emails |
| betsson1001.com | #134,484 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| naturalgasintel.com | #135,551 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| thalys.com | #135,641 | Didomi, Fastly, Let's Encrypt + 6 more | Find emails |
| interagencystandingcommittee.org | #135,692 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| paccar.com | #135,900 | AWS WAF, Amazon Web Services, Microsoft 365 + 1 more | Find emails |
| njspotlightnews.org | #135,903 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| consumersource.com | #135,925 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| cedarpoint.com | #136,171 | AB Tasty, Amazon Route 53, Google Tag Manager + 7 more | Find emails |
| geze.com | #136,205 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| ddowiki.com | #136,262 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| proteopedia.org | #136,445 | AWS WAF, Amazon (ACM), Amazon CloudFront + 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 →