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 |
|---|---|---|---|
| juanncorpas.edu.co | #531,375 | AWS WAF, Amazon Web Services, Cloudflare + 1 more | Find emails |
| maintenancepartspro.com | #532,348 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| unisportstore.it | #532,989 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| thefcsaasports.com | #533,473 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| flexmonster.com | #533,508 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| intersport.com.kw | #534,013 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| journey2asia.com | #534,043 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| drugdiscoverynews.com | #534,311 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| 8k0341q.top | #534,702 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| dekk365.no | #535,188 | AWS WAF, Amazon (ACM), Amazon Route 53 + 2 more | Find emails |
| haneda-shopping.jp | #535,277 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| hi889999.com | #535,299 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| themeparkhotels.com | #539,033 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| oneclickpurchasing.com | #539,746 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| 78977888.com | #539,776 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| oua.ca | #540,628 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| florealgroup.be | #541,219 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| singaporebudget.gov.sg | #541,386 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 1 more | Find emails |
| aerospace-aviation360.com | #541,586 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| racingsa.com.au | #541,939 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| farmmachinerysales.com.au | #542,467 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| forbrightbank.com | #542,502 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| patrinum.ch | #542,657 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| carlisleunited.co.uk | #542,700 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| viagogo.be | #542,730 | Affirm, Amazon (ACM), Amazon CloudFront + 10 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 →