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 |
|---|---|---|---|
| wilsonart.com | #121,276 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| 1sttix.org | #121,450 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| fde.sp.gov.br | #121,869 | AWS WAF, Amazon Web Services, Microsoft 365 | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| codibook.net |
| #121,907 |
| AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more |
| Find emails |
| showstudio.com | #121,921 | AWS WAF, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| findatopdoc.com | #122,004 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| rfqexperts.com | #122,055 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| bluetoad.com | #122,286 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| nathan.fr | #122,596 | AWS WAF, Amazon CloudFront, DigiCert | Find emails |
| transfermarkt.ch | #122,620 | AWS WAF, Amazon CloudFront, Let's Encrypt + 1 more | Find emails |
| raywhite.com | #122,642 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| bleep.com | #122,782 | AWS WAF, Cloudflare, Let's Encrypt + 1 more | Find emails |
| pvh.com | #122,870 | Akamai Bot Manager, Akamai edge/CDN, Amazon CloudFront + 11 more | Find emails |
| visualcv.com | #122,906 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| oup.co.uk | #123,067 | AWS WAF, Amazon Route 53, Amazon Web Services + 1 more | Find emails |
| nurx.com | #123,162 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| realscreen.com | #123,340 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| nsn-supplies.com | #123,405 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| eventfinda.co.nz | #123,663 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| trade-a-plane.com | #124,157 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| evrealestate.com | #124,446 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| oneblood.org | #124,604 | AWS WAF, Adobe Experience Cloud (Launch), Amazon Route 53 + 10 more | Find emails |
| labmanager.com | #125,046 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| smartbuyglasses.com | #125,440 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| eventbrite.at | #125,563 | AWS WAF, Amazon (ACM), Amazon CloudFront + 19 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 →