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 |
|---|---|---|---|
| servigroup.com | #199,592 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| aerospaceanddefenceparts.com | #199,892 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| swanseacity.com | #200,050 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| adzuna.be | #200,103 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| watchfinder.ie | #200,696 | AWS WAF, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| electronics3sixty.com | #200,966 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| eiplus.com.br | #201,025 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| frag-einen-anwalt.de | #201,077 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| biz2credit.com | #201,389 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| viagogo.co.uk | #201,398 | Affirm, Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| purchasingsynergy.com | #201,445 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| smartours.com | #201,592 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| requestforquotations.com | #201,921 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| 333win1.com | #201,961 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| onfy.de | #202,332 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| susi.live | #202,356 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| thinkchina.sg | #202,501 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| relahq.com | #202,913 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| medley.life | #203,084 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| asapaviationunlimited.com | #203,383 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| hotala.uk | #203,417 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| thepharmaletter.com | #203,594 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| vasafitness.com | #204,653 | AWS WAF, Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| stackednsn.com | #204,659 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| 789p88.app | #204,898 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 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 →