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 |
|---|---|---|---|
| slotnite.com | #467,073 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 13 more | Find emails |
| businessbroker.net | #467,396 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| castingwords.com | #467,654 | AWS WAF, Adobe Fonts, Adobe Fonts (Typekit) + 12 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| france-serres.com | #468,827 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| franchisegator.com | #469,213 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| maxlend.com | #469,483 | AWS WAF, Amazon Web Services | Find emails |
| 21buttons.com | #469,612 | AWS WAF, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| bristolrovers.co.uk | #469,675 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| es.pn | #470,570 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| smartbuyglasses.co.nz | #470,573 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| shanghaitang.com | #471,071 | AWS WAF, Amazon (ACM), Amazon Web Services + 2 more | Find emails |
| weekendgetaways.us | #471,256 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| housemetric.co.uk | #471,290 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| dotnetnuke.com | #471,981 | AWS WAF, Amazon Web Services, Cloudflare | Find emails |
| aeronauticamilitareofficialstore.it | #472,711 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| doorvel.com | #473,111 | AOS, Amazon (ACM), Amazon CloudFront + 9 more | Find emails |
| katkin.com | #473,599 | AWS WAF, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| uniqueclassiccars.com | #474,488 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| woodnet.net | #474,850 | AWS WAF, Adobe Fonts (Typekit), Amazon (ACM) + 8 more | Find emails |
| audioblocks.com | #474,913 | Adobe Fonts (Typekit), Amazon (ACM), Amazon Route 53 + 11 more | Find emails |
| quickstart.com | #476,700 | AWS WAF, Amazon Route 53, Amazon Web Services + 1 more | Find emails |
| praktikum.info | #477,502 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| mishloha.co.il | #478,472 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| relyon.com | #478,571 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| spinstation.com | #479,585 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 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 →