CAPTCHA & Bot Protection
49,994 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 |
|---|---|---|---|
| celebforum.to | #8,021 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| arabam.com | #8,046 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| shopier.com | #8,062 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | nist.gov | #231 (Tranco) | Find emails |
| emlakjet.com | #8,073 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| decathlon.it | #8,084 | CSC (Digital Brand Services), Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| elitebabes.com | #8,128 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 3 more | Find emails |
| fortnite.gg | #8,131 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| shaalaa.com | #8,148 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 3 more | Find emails |
| thothd.com | #8,160 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| nrdc.org | #8,164 | AB Tasty, Azure DNS, Cloudflare Bot Management + 6 more | Find emails |
| n2ch.net | #8,175 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| kinogo.online | #8,186 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| boyfriend.tv | #8,191 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| geogebra.org | #8,202 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| ytdown.to | #8,222 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| list.am | #8,231 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| aryion.com | #8,233 | Bluesky, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| vhlcentral.com | #8,255 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 5 more | Find emails |
| alberta.ca | #8,269 | Cloudflare edge/CDN, Drupal, Google Tag Manager + 2 more | Find emails |
| heritage.org | #8,271 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| javtiful.com | #8,281 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 3 more | Find emails |
| toongod.org | #8,289 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| nrc.nl | #8,291 | Cloudflare, Didomi, Font Awesome + 7 more | Find emails |
| famethemes.com | #8,299 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 9 more | Find emails |
| hostpapa.com | #8,305 | Astro, Cloudflare, Cloudflare Bot Management + 7 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →