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 |
|---|---|---|---|
| 534759.com | #753,396 | ASP.NET, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| 66111666.com | #753,932 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 66win33.com | #754,030 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| 679king.com |
| #754,063 |
| ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more |
| Find emails |
| 6mmoo.com | #754,216 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 77333777.com | #754,423 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 78908888.com | #754,720 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 789789.kim | #754,725 | ASP.NET, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| 78978966.com | #754,726 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 78978977.com | #754,727 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 78999888.com | #754,732 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 789p789p.com | #754,770 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 789p88.vip | #754,771 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 797979.bet | #754,830 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 79k01.club | #754,839 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 79k1.com | #754,840 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 79king02.com | #754,845 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 79king3.com | #754,846 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 79king4.com | #754,847 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 7tt88.vip | #754,982 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 88807888.vip | #755,219 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 88809888.vip | #755,220 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 88tt88.vip | #755,350 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| 89789bet.com | #755,369 | ASP.NET, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| 8k2457d.top | #755,462 | 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 →