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 |
|---|---|---|---|
| my-mooc.com | #163,054 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| aviationintegrated.com | #163,326 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| tntsports.com.br | #163,488 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| eventbrite.co | #163,647 | AWS WAF, Amazon (ACM), Amazon CloudFront + 18 more | Find emails |
| hardwareorbit.com | #164,166 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| stackedaerospace.com | #165,309 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| fashiola.com | #165,375 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| hi2999.com | #165,575 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| parkopedia.co.uk | #165,597 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| purchasing3sixty.com | #165,995 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| countryreports.org | #166,437 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| aviationpartsonline.com | #166,775 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| lanyrd.com | #166,877 | AWS WAF, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| np.edu.sg | #166,907 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 2 more | Find emails |
| streetcheck.co.uk | #167,371 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| conbio.org | #167,573 | ASP.NET, AWS WAF, Amazon CloudFront + 13 more | Find emails |
| bebeclub.co.id | #167,730 | AWS WAF, Amazon Web Services, CSC (Digital Brand Services) + 1 more | Find emails |
| apex4u.com | #167,843 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| kempstoncontrols.ae | #167,876 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| bexley.fr | #167,922 | AB Tasty, AWS WAF, Akamai mPulse + 7 more | Find emails |
| boxed.gg | #168,050 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| betsafe.ee | #168,956 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| lisboasecreta.co | #169,088 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| chara-ani.com | #169,154 | AWS WAF, Akamai Edge DNS, Amazon CloudFront | Find emails |
| wba.co.uk | #169,190 | AWS WAF, Amazon (ACM), Amazon CloudFront | 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 →