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 |
|---|---|---|---|
| city.ac.uk | #18,906 | Cloudflare Bot Management, Cloudflare edge/CDN, Let's Encrypt + 1 more | Find emails |
| crutchfield.com | #18,912 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| boyfriendtv.in | #18,928 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| afdb.org | #18,949 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| ascelibrary.org | #18,952 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| worldpay.com | #18,970 | Akamai Edge DNS, Amazon CloudFront, Cloudflare Bot Management + 10 more | Find emails |
| copy.ai | #18,979 | AWS Lambda, Adobe Fonts (Typekit), Azure API Management + 22 more | Find emails |
| nikkan-gendai.com | #18,992 | Adingo, Amazon Route 53, DoubleClick (Google Ads) + 11 more | Find emails |
| biedronka.pl | #18,994 | Cloudflare Bot Management, Cloudflare edge/CDN, OneTrust + 4 more | Find emails |
| manhuatop.org | #18,997 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| yodel.co.uk | #19,007 | Amazon (ACM), Amazon CloudFront, Apache + 12 more | Find emails |
| fapfolder.club | #19,071 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| ita-airways.com | #19,079 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert | Find emails |
| decathlon.be | #19,093 | CSC (Digital Brand Services), Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| astroawani.com | #19,097 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| pushub.net | #19,163 | Bootstrap, ConsentMo, DigitalOcean Spaces + 10 more | Find emails |
| recu.me | #19,178 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| nadirkitap.com | #19,179 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| surfline.com | #19,193 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| overframe.gg | #19,203 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| nt.gov.au | #19,253 | Azure DNS, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| fing.com | #19,263 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 19 more | Find emails |
| lexsynergy.net | #19,265 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| hesap.com.tr | #19,273 | Cloudflare, Cloudflare edge/CDN, Google Ads Conversion + 9 more | Find emails |
| gmgn.ai | #19,280 | Amazon Route 53, Cloudflare Bot Management, Cloudflare Web Analytics + 8 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 →