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 |
|---|---|---|---|
| ficwad.com | #102,808 | Apache, Let's Encrypt, jQuery + 1 more | Find emails |
| tennet.eu | #102,843 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert | Find emails |
| newsghana.com.gh | #102,871 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| sasugawiki.com |
| #102,875 |
| Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 6 more |
| Find emails |
| build38.io | #102,882 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| dot.ph | #102,897 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| manhwadesu.tech | #102,907 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| blgwiki.com | #102,944 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 6 more | Find emails |
| theo2.co.uk | #102,955 | Adobe Experience Cloud (Launch), Azure DNS, Cloudflare Bot Management + 11 more | Find emails |
| jameco.com | #102,968 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| wikimillions.com | #102,995 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 6 more | Find emails |
| iaapa.org | #103,011 | AddToAny, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| bncvirtual.com | #103,025 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| hostinger.es | #103,039 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Fonts + 6 more | Find emails |
| reuter.de | #103,046 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| ncagr.gov | #103,053 | AddToAny, Amazon (ACM), Amazon CloudFront + 13 more | Find emails |
| thg-paris.com | #103,074 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| emis.de | #103,096 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| onlinemetals.com | #103,113 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| 1112hdm.com | #103,123 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| cmangax16.com | #103,131 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| bubbi.ai | #103,174 | CookieYes, Google Fonts, Google Tag Manager + 7 more | Find emails |
| adidas.ua | #103,182 | Cloudflare, Cloudflare edge/CDN, Google Identity Services + 4 more | Find emails |
| tradeify.co | #103,196 | AWS Lambda, Amazon CloudFront, Bootstrap + 21 more | Find emails |
| diverseeducation.com | #103,210 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | 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 →