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 |
|---|---|---|---|
| mb-nn.ru | #134,061 | Bootstrap, Cloudflare, Fancybox + 12 more | Find emails |
| aksesbayar.com | #134,064 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 3 more | Find emails |
| ls1.com | #134,073 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| africafoot.com | #134,079 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 8 more | Find emails |
| saqronline.com | #134,088 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| e-talenta.eu | #134,106 | Apache, Let's Encrypt, WordPress | Find emails |
| urm.lt | #134,108 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| tsys.com | #134,152 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| ginernet.com | #134,159 | Google Analytics, Google Tag Manager, Let's Encrypt + 3 more | Find emails |
| bookstaygo.com | #134,170 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| saramadpoolad.com | #134,176 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| cccamiptv.club | #134,178 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| spinaway.com | #134,197 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| vinhuni.edu.vn | #134,198 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| ifex.org | #134,207 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| medicinetw.com | #134,224 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| flokii.com | #134,225 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| aa12308.com | #134,237 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| atom.bio | #134,275 | Amazon (ACM), Django, Font Awesome + 16 more | Find emails |
| globalxetfs.com | #134,291 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| manpower.fr | #134,301 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| plymouth.gov.uk | #134,308 | Amazon Route 53, Civic Cookie Control, Cloudflare edge/CDN + 11 more | Find emails |
| metasports.com.py | #134,309 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| runboard.com | #134,329 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| acne.org | #134,348 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 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-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →