CAPTCHA & Bot Protection
91,344 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9.1%). Google's CAPTCHA/bot-scoring widget, the most widely deployed CAPTCHA by far. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | snapchat.com | #123 (Tranco) | Find emails |
| 2 | apache.org | #125 (Tranco) | Find emails |
| 3 | one.one | #160 (Tranco) | Find emails |
| 4 | w3.org |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| levi.in | #19,064 | Cloudflare edge/CDN, DigitalOcean Spaces, Let's Encrypt + 4 more | Find emails |
| fapfolder.club | #19,071 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 10 more | Find emails |
| chiletrabajos.cl | #19,101 | Amazon Route 53, Apache, Bootstrap + 13 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| reedsy.com | #19,104 | Crisp, Google Fonts, Google Trust Services + 3 more | Find emails |
| libas.in | #19,106 | Cloudflare, Cloudflare edge/CDN, GoKwik + 11 more | Find emails |
| digitalpacific.com.au | #19,122 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 15 more | Find emails |
| sinarharian.com.my | #19,129 | Amazon CloudFront, AnyMind Group, Bootstrap + 17 more | Find emails |
| avjoy.me | #19,138 | Apache, Bootstrap, Cloudflare + 11 more | Find emails |
| contentexchange.me | #19,160 | Google AdSense, Google Analytics, Google Fonts + 10 more | Find emails |
| chatib.us | #19,182 | Blockthrough, Bootstrap, Cloudflare + 22 more | Find emails |
| deodap.in | #19,188 | Cloudflare edge/CDN, GoAffPro, GoKwik + 11 more | Find emails |
| poco.de | #19,235 | Bazaarvoice, Cloudflare, Cloudflare Bot Management + 5 more | Find emails |
| sizzling-hot-deluxe-slot.com | #19,248 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| carscoops.com | #19,256 | Cloudflare, Disqus, DoubleClick (Google Ads) + 10 more | Find emails |
| snapon.com | #19,276 | ASP.NET, Fancybox, Google Fonts + 10 more | Find emails |
| avm.de | #19,279 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 8 more | Find emails |
| veoh.com | #19,283 | Bootstrap, Font Awesome, Google Analytics + 11 more | Find emails |
| lottostar.co.za | #19,304 | Cloudflare, Google Fonts, Google Tag Manager + 9 more | Find emails |
| alastyr.com | #19,311 | Bootstrap, DigiCert, Font Awesome + 12 more | Find emails |
| no-ip.info | #19,331 | DigiCert, FirstPromoter, Google Fonts + 6 more | Find emails |
| nubia.com | #19,384 | Cloudflare edge/CDN, Google Tag Manager, Let's Encrypt + 9 more | Find emails |
| studyinsaudi.sa | #19,408 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| dkimwl.org | #19,417 | Apache, Bootstrap, Font Awesome + 5 more | Find emails |
| careeronestop.org | #19,457 | ASP.NET, AWS WAF, Amazon (ACM) + 8 more | Find emails |
| mars.com | #19,466 | AOS, Amazon Route 53, ConsentMo + 9 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 →