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 |
|---|---|---|---|
| nursejinzaibank.com | #434,151 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| rabat.net | #435,289 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| ukv.de | #435,370 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| plusmagazine.be |
| #436,313 |
| AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more |
| Find emails |
| jallacasino.se | #438,308 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| insulation4less.com | #438,447 | ASP.NET, AWS WAF, Amazon (ACM) + 17 more | Find emails |
| nsnaxis.com | #438,796 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| visitredsea.com | #439,354 | AWS WAF, Amazon CloudFront, Cloudflare + 3 more | Find emails |
| mypropertyrecs.com | #439,602 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| stihl.ca | #439,616 | AWS WAF, Amazon CloudFront, Microsoft 365 | Find emails |
| rpxcorp.com | #439,768 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| vacationsrental.com | #440,089 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| f8bet19.pro | #441,519 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| hellocasino.com | #441,563 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 16 more | Find emails |
| beaconelectrical.co.uk | #441,667 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| prettylittlething.eu | #441,715 | AB Tasty, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| humanitarianaction.info | #442,286 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| geze.de | #442,538 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| onlineinvoices.com | #442,996 | AWS WAF, Amazon (ACM), Amazon Route 53 + 12 more | Find emails |
| coursiv.co | #443,116 | Amazon Route 53, Bootstrap, Let's Encrypt + 4 more | Find emails |
| topschooljobs.org | #443,490 | AWS WAF, Adobe Experience Cloud (Launch), Adobe Fonts (Typekit) + 11 more | Find emails |
| estiavillas.com | #444,019 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| aviationpurchasingservice.com | #444,575 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| casai.co.za | #444,927 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| tidyhq.com | #444,989 | Ahrefs Analytics, Amazon Route 53, Google Fonts + 12 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 →