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 |
|---|---|---|---|
| kicker.at | #54,051 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| kentlive.news | #54,108 | AWS WAF, Amazon (ACM), Amazon CloudFront + 14 more | Find emails |
| lolchess.gg | #54,118 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| ok.co.uk |
| #54,125 |
| AWS WAF, Amazon (ACM), Amazon CloudFront + 14 more |
| Find emails |
| wellcome.org | #54,138 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| goodyear.eu | #54,203 | Adobe Experience Manager Edge Delivery (Helix RUM), Adobe Fonts (Typekit), Amazon CloudFront + 6 more | Find emails |
| somersetlive.co.uk | #54,428 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| moe.gov.sg | #54,515 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 1 more | Find emails |
| flybondi.com | #54,882 | Amazon CloudFront, Cloudflare, Cloudflare edge/CDN + 3 more | Find emails |
| aryeo.com | #55,372 | AOS, AWS Lambda, AWS WAF + 21 more | Find emails |
| parkopedia.com | #55,434 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| worldchess.com | #55,478 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| wisebread.com | #55,631 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 16 more | Find emails |
| transfermarkt.mx | #55,876 | AWS WAF, Amazon CloudFront, Let's Encrypt + 1 more | Find emails |
| nastygal.com | #56,297 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| tek.no | #56,366 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| transfermarkt.nl | #56,580 | AWS WAF, Amazon CloudFront, Let's Encrypt + 1 more | Find emails |
| tuifly.be | #56,785 | Akamai Bot Manager, Akamai edge/CDN, Amazon CloudFront + 10 more | Find emails |
| folderz.nl | #56,889 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| unicourt.com | #57,056 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| ordnet.dk | #57,484 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| southwesternrailway.com | #57,756 | Amazon CloudFront, CSC (Digital Brand Services), DigiCert + 7 more | Find emails |
| hsbc.uk | #58,482 | Adobe Experience Manager Edge Delivery (Helix RUM), Amazon CloudFront, Apache + 3 more | Find emails |
| manhunt.net | #58,968 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| hsbc.com.au | #59,086 | ASP.NET, Amazon CloudFront, Apache + 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 →