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 |
|---|---|---|---|
| veridyen.com | #30,357 | Bootstrap, Cloudflare, Cloudflare Bot Management + 11 more | Find emails |
| jamesedition.com | #30,374 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| hrp.org.uk | #30,457 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| soriana.com | #30,479 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| doityourself.com | #30,502 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| eb.com | #30,508 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| classic.com | #30,511 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| criterion.com | #30,514 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| ar15.com | #30,541 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| lrv.lt | #30,551 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| coros.com | #30,558 | Alibaba Cloud DNS, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| aaaai.org | #30,560 | ASP.NET, Bluesky, Cloudflare Bot Management + 9 more | Find emails |
| monitor.co.ug | #30,565 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| airfranceklm.com | #30,571 | Akamai Edge DNS, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| wook.pt | #30,574 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| tmtime.dev | #30,586 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| head-fi.org | #30,607 | ConsentMo, DoubleClick (Google Ads), Font Awesome + 8 more | Find emails |
| bib.no | #30,612 | Apache, Bootstrap, Google Fonts + 4 more | Find emails |
| shahvani.com | #30,630 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| alexhost.md | #30,641 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| talkjs.com | #30,664 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| healthcareitnews.com | #30,697 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| entertainmentearth.com | #30,698 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| pandahall.com | #30,789 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| hims.com | #30,821 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 1 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 →