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 |
|---|---|---|---|
| cdlib.org | #20,598 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| uofmhealth.org | #20,608 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| novibet.gr | #20,626 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| eztvx.to | #20,656 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| flynas.com | #20,662 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| numista.com | #20,695 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| childmind.org | #20,698 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| hemmings.com | #20,699 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| sportisimo.cz | #20,726 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| partcommunity.com | #20,739 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| simplepart.net | #20,750 | Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| devexpress.com | #20,757 | ASP.NET, Azure API Management, Cloudflare + 9 more | Find emails |
| beautynesia.id | #20,806 | Cloudflare edge/CDN, DoubleClick (Google Ads), Google AMP + 6 more | Find emails |
| unlam.edu.ar | #20,828 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| erodate.pl | #20,833 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| decathlon.cz | #20,847 | CSC (Digital Brand Services), Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| waveapps.com | #20,849 | AWS Lambda, Amazon CloudFront, Amplitude + 15 more | Find emails |
| myfxbook.com | #20,850 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| depositfiles.com | #20,858 | Cloudflare, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| conta.cc | #20,871 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| wwin.com | #20,878 | Adobe Fonts, Adobe Fonts (Typekit), Cloudflare + 5 more | Find emails |
| physio-pedia.com | #20,931 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| sosovalue.com | #20,945 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| agu.org | #20,957 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert + 1 more | Find emails |
| slevomat.cz | #20,977 | 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 →