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.
| # | 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 |
|---|---|---|---|
| alexhost.com | #37,877 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| umpquabank.com | #37,897 | Cloudflare Bot Management, Cloudflare edge/CDN, Microsoft 365 + 2 more | Find emails |
| 972mag.com | #37,906 | Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| forex.com | #37,908 | Azure DNS, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| musicradio.com | #37,929 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| bookcrossing.com | #37,969 | ASP.NET, Cloudflare, Cloudflare Bot Management + 10 more | Find emails |
| moneymetals.com | #37,990 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| mims.com | #37,992 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| icheckmovies.com | #37,993 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| childrenshealthdefense.org | #37,998 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| investireoggi.it | #38,000 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| ncnu.edu.tw | #38,004 | Apache, DigiCert, Google Analytics + 1 more | Find emails |
| trackyserver.com | #38,026 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| buyandsellhair.com | #38,044 | AddToAny, Cloudflare, Cloudflare Web Analytics + 16 more | Find emails |
| construct.net | #38,053 | Cloudflare Bot Management, Cloudflare edge/CDN, Let's Encrypt | Find emails |
| autodoc.co.uk | #38,068 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| pcgamingwiki.com | #38,082 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 8 more | Find emails |
| vbulletin.com | #38,099 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| lufthansagroup.com | #38,101 | Cloudflare Bot Management, Cloudflare edge/CDN, Sectigo | Find emails |
| freepdfconvert.com | #38,102 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| mamul.am | #38,110 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| zaubacorp.com | #38,123 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| happyscribe.com | #38,141 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| ulster.ac.uk | #38,159 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| utppublishing.com | #38,177 | 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 →