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.
Other captcha & bot protection
| # | 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 |
|---|---|---|---|
| 8k4345t.top | #755,466 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 8mmoo.com | #755,486 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 902828.com | #755,531 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| 97777999.com |
| #755,680 |
| ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more |
| Find emails |
| 97go99.com | #755,689 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 982111.com | #755,700 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 984798.com | #755,703 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| 98win62.com | #755,740 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| 98wn59.com | #755,741 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| 98wn64.com | #755,742 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| 990k-4.club | #755,752 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| 99555599.com | #755,757 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 99967899.vip | #755,763 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 99go99.vip | #755,823 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 99kl.online | #755,837 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 99ok1.com | #755,856 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| 99ok2.com | #755,857 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| 99ok3.com | #755,858 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| acrelianews.com | #756,810 | AWS WAF, Amazon (ACM), Amazon Route 53 + 3 more | Find emails |
| adamhewitt.com | #756,889 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| alcopa-auction.es | #758,128 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| apps2have.com | #760,025 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| ar5rs88.top | #760,174 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| awsurplusauction.com | #761,954 | AWS WAF, Amazon CloudFront, Apache + 5 more | Find emails |
| bairessecreta.com | #762,491 | 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 →