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 |
|---|---|---|---|
| scholargps.com | #276,232 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| espnbet.com | #276,649 | AWS WAF, Amazon CloudFront, Sectigo | Find emails |
| aapor.org | #277,399 | AddThis, Adobe Fonts (Typekit), All in One SEO + 27 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| #277,659 |
| AWS WAF, Amazon (ACM), Amazon Web Services |
| Find emails |
| addleshawgoddard.com | #278,081 | ASP.NET, Amazon CloudFront, Cookiebot + 10 more | Find emails |
| midwestracquetsports.com | #278,190 | AWS WAF, Amazon CloudFront, Cloudflare + 2 more | Find emails |
| vci.net | #278,522 | AWS WAF, Amazon CloudFront, Let's Encrypt + 3 more | Find emails |
| register.ca | #278,755 | AWS WAF, Amazon (ACM), Amazon Route 53 + 8 more | Find emails |
| fabrics-store.com | #278,770 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| betsson.es | #278,804 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| manchesterhive.com | #278,958 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| simplifiedpurchasing.com | #279,361 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| fashiola.es | #279,365 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| asaprfq.com | #279,778 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| forumancientcoins.com | #279,927 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| sophiagenetics.com | #279,961 | Adobe Fonts, Adobe Fonts (Typekit), Amazon CloudFront + 20 more | Find emails |
| storii.com | #280,628 | AWS Lambda, Adobe Fonts (Typekit), Amazon CloudFront + 17 more | Find emails |
| mydaytrip.com | #280,657 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| snappy.com | #280,790 | AWS Lambda, AWS WAF, Amazon CloudFront + 10 more | Find emails |
| seriouspuzzles.com | #280,823 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| miatlantic.eu | #280,952 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| monet.asia | #281,245 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| smartpress.com | #281,360 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| ppaooq.com | #281,386 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| mymapleridge.com | #281,471 | 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 →