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 |
|---|---|---|---|
| u.gg | #12,386 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| bid.cars | #12,442 | Bootstrap, Cloudflare, Cloudflare Bot Management + 11 more | Find emails |
| mobygames.com | #12,454 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | 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 + 1 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 |
| 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 |
| chime.com | #12,699 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 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 |
| swiss.com | #12,734 | Cloudflare Bot Management, Cloudflare edge/CDN, Sectigo | Find emails |
| uniswap.org | #12,742 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 5 more | Find emails |
| bab.la | #12,774 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| winehq.org | #12,783 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| opengroup.org | #12,817 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| pandora.net | #12,818 | CSC (Digital Brand Services), Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| spaceship.net | #12,822 | Cloudflare Bot Management, Cloudflare edge/CDN, Sectigo | Find emails |
| baylor.edu | #12,823 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Drupal + 8 more | Find emails |
| travelpayouts.com | #12,839 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| oszar.com | #12,843 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →