CAPTCHA & Bot Protection
50,387 of the 1,000,000 top sites in our Tranco top-1M census run Cloudflare Turnstile (5%). Cloudflare's non-interactive CAPTCHA replacement, bundled free with its CDN/WAF. Detection is homepage-level HTML/header fingerprinting, so a site can run Cloudflare Turnstile on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | x.com | #54 (Tranco) | Find emails |
| 2 | discord.com | #163 (Tranco) | Find emails |
| 3 | flickr.com | #172 (Tranco) | Find emails |
| 4 | soundcloud.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| xfreehd.com | #17,654 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| legiscan.com | #17,678 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| biblio.com | #17,713 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| wildtangent.com | #17,738 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 14 more | Find emails |
| tattle.life | #17,740 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| disboard.org | #17,766 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| keepa.com | #17,809 | Cloudflare, Cloudflare edge/CDN, Google Trust Services | Find emails |
| alliedmarketresearch.com | #17,810 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| escavador.com | #17,855 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| thefap.net | #17,858 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| wsp.com | #17,861 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert + 1 more | Find emails |
| decathlon.pl | #17,866 | CSC (Digital Brand Services), Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| kimovil.com | #17,930 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| khinsider.com | #17,934 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| teknosa.com | #17,973 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| gesoten.com | #17,983 | Amazon CloudFront, Amazon Route 53, Cloudflare Bot Management + 12 more | Find emails |
| jut.su | #18,005 | Cloudflare edge/CDN, Fancybox, Let's Encrypt + 4 more | Find emails |
| 777.ua | #18,039 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| hexagon.com | #18,066 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| omnihotels.com | #18,067 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| connectwise.com | #18,068 | ASP.NET, Adobe Fonts, Adobe Fonts (Typekit) + 18 more | Find emails |
| ogol.com.br | #18,071 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| hpage.com | #18,100 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| ext.to | #18,114 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| 23andme.com | #18,137 | Amazon CloudFront, Cloudflare, Cloudflare Bot Management + 9 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →