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 |
|---|---|---|---|
| lystit.com | #16,280 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| jsbin.com | #16,314 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| theobjective.com | #16,325 | AMP for WP, Adobe Fonts (Typekit), Bluesky + 11 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| nysenate.gov | #16,349 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Cloud DNS + 2 more | Find emails |
| publicationethics.org | #16,360 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| centrepointstores.com | #16,363 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| smartinsights.com | #16,380 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| 7dak.com | #16,401 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| dutchie.com | #16,435 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| open.edu | #16,452 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| enuygun.com | #16,467 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert | Find emails |
| blsp.at | #16,497 | Cloudflare, Cloudflare edge/CDN, Google Trust Services | Find emails |
| cybo.com | #16,498 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| behindthevoiceactors.com | #16,522 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 7 more | Find emails |
| sportsmans.com | #16,554 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| loseit.com | #16,567 | Amazon CloudFront, Bootstrap, Cloudflare + 16 more | Find emails |
| lastminute.com | #16,573 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| tokenex.com | #16,574 | 6sense, Algolia, Amazon CloudFront + 30 more | Find emails |
| bezformata.com | #16,581 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| forward.com | #16,604 | Chartbeat, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| gamefound.com | #16,667 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| otago.ac.nz | #16,670 | Cloudflare Bot Management, Cloudflare edge/CDN, Let's Encrypt + 1 more | Find emails |
| scheels.com | #16,675 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| cogeco.ca | #16,705 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| interpals.net | #16,713 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 13 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 →