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 |
|---|---|---|---|
| downdetector.com.br | #97,432 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| 38m5ufjp.com | #97,458 | Alibaba Cloud CDN, Cloudflare R2, Cloudflare edge/CDN + 3 more | Find emails |
| 55vv01.com | #97,460 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| 5p2dn99b.com | #97,461 | Alibaba Cloud CDN, Cloudflare R2, Cloudflare edge/CDN + 3 more | Find emails |
| 80game.vip | #97,462 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| 89h001.com | #97,463 | Alibaba Cloud CDN, Cloudflare R2, Cloudflare edge/CDN + 3 more | Find emails |
| 98cqm.com | #97,464 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| 98wmxyee.com | #97,465 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| a1dovvlb.com | #97,466 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| a6nz7itu.com | #97,467 | Alibaba Cloud CDN, Cloudflare R2, Cloudflare edge/CDN + 3 more | Find emails |
| cnects.net | #97,477 | Apache, Bootstrap, Google Analytics + 5 more | Find emails |
| dafv5do2.com | #97,479 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| e29oxnp8.com | #97,480 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| godstart.dk | #97,485 | Cookiebot, Google Analytics, Google Fonts + 6 more | Find emails |
| jbqt7rca.com | #97,488 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| jecpbjay.com | #97,489 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| jg49f3.com | #97,491 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| jyl2iubm.com | #97,494 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| kbpmbnc2.com | #97,495 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| manga-leko.site | #97,500 | Bootstrap, Cloudflare, Cloudflare Bot Management + 11 more | Find emails |
| mo5tqu3m.com | #97,504 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| pnc.gob.gt | #97,511 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| uy5fh4.com | #97,520 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| fowlersparts.co.uk | #97,535 | Adobe Fonts, Adobe Fonts (Typekit), Cloudflare + 14 more | Find emails |
| veev.to | #97,539 | AOS, Bootstrap, Cloudflare + 10 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 →