CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9%). 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 |
|---|---|---|---|
| security.org | #35,123 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 12 more | Find emails |
| hackerearth.com | #35,126 | Amazon (ACM), Amazon Route 53, Amazon Web Services + 9 more | Find emails |
| apec.fr | #35,144 | AB Tasty, DataDome, Didomi + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| natura.com |
| #35,168 |
| Amazon Route 53, Cloudflare edge/CDN, ConsentMo + 10 more |
| Find emails |
| kink.com | #35,194 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 2 more | Find emails |
| delta.bg | #35,210 | Cloudflare Turnstile, DoubleClick (Google Ads), Google Analytics + 10 more | Find emails |
| urbanup.com | #35,214 | Bunny CDN, BunnyCDN, Confiant + 10 more | Find emails |
| weatherzone.com.au | #35,219 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| babal.host | #35,236 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| mieru-ca.com | #35,237 | All in One SEO, Amazon (ACM), Amazon CloudFront + 15 more | Find emails |
| thestar.co.uk | #35,239 | Cloudflare Bot Management, Cloudflare edge/CDN, DoubleClick (Google Ads) + 9 more | Find emails |
| helixo.co | #35,287 | All in One SEO, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| hostsevenplus.com | #35,312 | Apache, Bootstrap, Font Awesome + 8 more | Find emails |
| ruskline.ru | #35,315 | Google AdSense, Google Analytics, Google Tag Manager + 7 more | Find emails |
| lfg.com | #35,331 | Akamai edge/CDN, Akamai mPulse, DigiCert + 6 more | Find emails |
| splitcoaststampers.com | #35,340 | Amazon Advertising, Bootstrap, Cloudflare + 15 more | Find emails |
| found.ee | #35,348 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| webglobe.sk | #35,350 | Bootstrap, Cookiebot, DigiCert + 9 more | Find emails |
| presonus.com | #35,362 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| x-star.com | #35,374 | Google Tag Manager, Nginx, Telegram + 1 more | Find emails |
| nuvid.com | #35,385 | Cloudflare, Font Awesome, Google Analytics + 4 more | Find emails |
| user.com | #35,389 | AWS Lambda, Axeptio, Cloudflare + 16 more | Find emails |
| tonal.com | #35,392 | Amazon Route 53, Bootstrap, Bugsnag + 9 more | Find emails |
| asiangroceronline.com.au | #35,397 | AddThis, ChatGPT Ads Pixel, Cloudflare + 9 more | Find emails |
| deepgram.com | #35,409 | Amazon Route 53, Google Fonts, Google Tag Manager + 12 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →