CAPTCHA & Bot Protection
49,994 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 |
|---|---|---|---|
| opencart.com | #12,193 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| eplus.jp | #12,203 | Akamai Edge DNS, Cloudflare Bot Management, Cloudflare edge/CDN + 4 more | Find emails |
| globe.com.ph | #12,264 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | nist.gov | #231 (Tranco) | Find emails |
| lguplus.com | #12,267 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| civitai.com | #12,289 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| newspapers.com | #12,344 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| lovart.ai | #12,350 | Alibaba Cloud DNS, Cloudflare edge/CDN, DigiCert + 5 more | Find emails |
| coolors.co | #12,361 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| testmy.net | #12,380 | Bootstrap, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| u.gg | #12,386 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| bid.cars | #12,442 | Bootstrap, Cloudflare, Cloudflare Bot Management + 10 more | Find emails |
| mobygames.com | #12,454 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| fatsecret.com | #12,479 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| rawpixel.com | #12,484 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| mind.org.uk | #12,502 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| nascar.com | #12,505 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| serverfault.com | #12,518 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| 123tor.ru | #12,527 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| webopedia.com | #12,552 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| transparency.org | #12,554 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| ranker.com | #12,606 | Cloudflare, Express, Fastly + 3 more | Find emails |
| hackerone.com | #12,650 | Cloudflare Bot Management, Cloudflare edge/CDN, ConsentMo + 7 more | Find emails |
| frame.io | #12,711 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 11 more | Find emails |
| cybersource.com | #12,712 | Akamai Edge DNS, Cloudflare, Cloudflare Bot Management + 1 more | Find emails |
| limetorrents.fun | #12,732 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →