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 |
|---|---|---|---|
| sojo.net | #60,344 | Bluesky, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| chuffed.org | #60,372 | Algolia, Bugsnag, Cloudflare + 16 more | Find emails |
| chatiw.com | #60,402 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| crazyporn.xxx |
| #60,405 |
| Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more |
| Find emails |
| johnshopkins.edu | #60,428 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| rspo.org | #60,437 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Bot Management + 14 more | Find emails |
| enthuse.com | #60,469 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| mrvegas.com | #60,505 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| effedupmovies.com | #60,508 | Bootstrap, Let's Encrypt, Nginx + 2 more | Find emails |
| brolos.com.au | #60,515 | Adobe Fonts (Typekit), Campaign Monitor, Cloudflare + 11 more | Find emails |
| blog.cz | #60,528 | Cloudflare Bot Management, Cloudflare edge/CDN, Microsoft 365 | Find emails |
| worldstar.com | #60,606 | Apache, Bootstrap, Cloudflare Bot Management + 23 more | Find emails |
| thinkadvisor.com | #60,628 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| imagetotext.info | #60,657 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 4 more | Find emails |
| thersa.org | #60,685 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| nhattao.com | #60,704 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| r-gol.com | #60,720 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| hisawyer.com | #60,721 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| speedy.bg | #60,755 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| revenuewell.com | #60,762 | AWS Lambda, Cloudflare, Cloudflare Bot Management + 9 more | Find emails |
| tumgik.com | #60,765 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| e-boks.dk | #60,771 | ASP.NET, Atlassian Statuspage, Cloudflare + 6 more | Find emails |
| missav123.to | #60,783 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| drmax.pl | #60,799 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| itemci.com | #60,805 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 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 →