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 |
|---|---|---|---|
| 990k.com | #85,502 | ASP.NET, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| ok36538.vip | #85,522 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| hi1333.com | #85,551 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| alebilet.pl |
| #85,750 |
| AWS WAF, Amazon (ACM), Amazon CloudFront + 13 more |
| Find emails |
| listedcompany.com | #85,767 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| sofort.de | #85,873 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 1 more | Find emails |
| okking.cooking | #86,129 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| kgnow.com | #86,303 | AWS WAF, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| imda.gov.sg | #86,625 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 1 more | Find emails |
| syncplicity.com | #86,646 | AWS WAF, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| musbi.net | #86,863 | Amazon Route 53, Google Analytics, Microsoft 365 + 7 more | Find emails |
| beautylish.com | #87,352 | AWS WAF, Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| 98wn62.com | #87,402 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| orthobullets.com | #87,617 | ASP.NET, AWS WAF, Amazon (ACM) + 8 more | Find emails |
| ieice.org | #87,768 | AWS WAF, Amazon Route 53, Amazon Web Services + 1 more | Find emails |
| whistler.com | #87,822 | ASP.NET, AWS WAF, Amazon (ACM) + 7 more | Find emails |
| dejobs.org | #88,009 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| kheloexch99.com | #88,190 | AWS WAF, Cloudflare, Cloudflare edge/CDN + 1 more | Find emails |
| adzuna.com.br | #88,233 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| amzn.in | #88,361 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| 33win00.com | #88,891 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 79king12.com | #88,908 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| good8812.cc | #89,079 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| new888s.com | #89,204 | ASP.NET, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| ok365bet.cc | #89,214 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 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 →