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 |
|---|---|---|---|
| airspacemag.com | #98,672 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 11 more | Find emails |
| zoon.com.ua | #98,685 | Cloudflare, Let's Encrypt | Find emails |
| igram.website | #98,705 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| ep12367.com |
| #98,742 |
| Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more |
| Find emails |
| ofuse.me | #98,780 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| gramophone.co.uk | #98,820 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| ac-nice.fr | #98,824 | Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| fazwaz.fr | #98,828 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| bandwidthx.net | #98,879 | Cloudflare Bot Management, Cloudflare edge/CDN, Sectigo | Find emails |
| wikitron.com | #98,881 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 6 more | Find emails |
| law-wiki.com | #98,942 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 6 more | Find emails |
| deltapath.com | #98,966 | Apache, CookieYes, Font Awesome + 9 more | Find emails |
| inrap.fr | #98,978 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| amaysim.com.au | #98,986 | AB Tasty, Amazon (ACM), Amazon CloudFront + 19 more | Find emails |
| localitybiz.com | #98,987 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| ap.ge | #99,002 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| alltricks.com | #99,011 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| hindibookmark.com | #99,023 | Bootstrap, Cloudflare, Cloudflare Bot Management + 9 more | Find emails |
| rpgmaker.net | #99,043 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| issuelab.org | #99,050 | Amazon CloudFront, Amazon Route 53, Bootstrap + 15 more | Find emails |
| pipa.be | #99,051 | Cloudflare Bot Management, Cloudflare edge/CDN, Let's Encrypt + 1 more | Find emails |
| visitarizona.com | #99,060 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 2 more | Find emails |
| groupe-ldlc.com | #99,061 | Backbone.js, ConsentMo, Didomi + 19 more | Find emails |
| 299pg7.cc | #99,070 | Alibaba Cloud CDN, Cloudflare R2, Cloudflare edge/CDN + 4 more | Find emails |
| ku8j91bf.com | #99,074 | Alibaba Cloud CDN, Cloudflare R2, Cloudflare edge/CDN + 3 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 →