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 |
|---|---|---|---|
| 4tuning.ro | #83,671 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| 7cups.com | #83,691 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| aduanas.gob.hn | #83,700 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| unfoundation.org | #83,701 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| javsaga.ninja | #83,746 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| bet879.xyz | #83,759 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| cinemacity.ro | #83,781 | Bootstrap, Cloudflare, Cloudflare Bot Management + 12 more | Find emails |
| kimootoko.net | #83,797 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| lotrlegendswiki.com | #83,813 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 6 more | Find emails |
| jav777.xyz | #83,842 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| yugiyu.com | #83,851 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| whytoon.com | #83,869 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| yu777.com | #83,886 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| eham.net | #83,893 | Bootstrap, Cloudflare, Cloudflare Bot Management + 6 more | Find emails |
| sanipexgroup.com | #83,926 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| greenmountainaccess.net | #83,928 | Adobe Fonts (Typekit), Bootstrap, Cloudflare Bot Management + 9 more | Find emails |
| isoc.org.il | #83,941 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| w9qvg.com | #83,950 | Alibaba Cloud CDN, Cloudflare, Cloudflare Bot Management + 5 more | Find emails |
| w5lww.com | #83,990 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 more | Find emails |
| javcub.org | #83,991 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| firecross.jp | #84,004 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| alloha.tv | #84,010 | Proton Mail | Find emails |
| sigep.gob.bo | #84,023 | Sectigo | Find emails |
| simplepay.cloud | #84,031 | AOS, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| 3t389.com | #84,063 | Alibaba Cloud CDN, Cloudflare Bot Management, Cloudflare R2 + 4 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 →