CAPTCHA & Bot Protection
56,649 of the 965,200 top sites in our Tranco top-1M census run reCAPTCHA (5.9%). 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 | one.one | #160 (Tranco) | Find emails |
| 2 | pki.goog | #218 (Tranco) | Find emails |
| 3 | t-online.de | #220 (Tranco) | Find emails |
| 4 | dnsmadeeasy.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| natura.com | #35,168 | Amazon Route 53, Cloudflare edge/CDN, CrazyEgg + 11 more | Find emails |
| kink.com | #35,194 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 2 more | Find emails |
| delta.bg | #35,210 | Google Analytics, Google Tag Manager, LinkedIn Insight Tag + 5 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| urbanup.com |
| #35,214 |
| Google Analytics, Google Fonts, Google Tag Manager + 6 more |
| Find emails |
| weatherzone.com.au | #35,219 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| thestar.co.uk | #35,239 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Cloud DNS + 5 more | Find emails |
| helixo.co | #35,287 | Cloudflare, Cloudflare edge/CDN, Crisp + 6 more | Find emails |
| lfg.com | #35,331 | Akamai mPulse, DigiCert, Microsoft 365 + 4 more | Find emails |
| found.ee | #35,348 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| webglobe.sk | #35,350 | Cookiebot, DigiCert, Google Fonts + 6 more | Find emails |
| presonus.com | #35,362 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| x-star.com | #35,374 | Google Tag Manager, Nginx, reCAPTCHA v2 | Find emails |
| nuvid.com | #35,385 | Cloudflare, Font Awesome, Google Analytics + 3 more | Find emails |
| tonal.com | #35,392 | Amazon Route 53, Bootstrap, Bugsnag + 9 more | Find emails |
| asiangroceronline.com.au | #35,397 | Cloudflare, Cloudflare edge/CDN, Google Ads Conversion + 7 more | Find emails |
| houstonpress.com | #35,464 | Adobe Fonts (Typekit), Cloudflare, Google Analytics + 9 more | Find emails |
| journalstar.com | #35,470 | Amazon Advertising, Font Awesome, Google AdSense + 15 more | Find emails |
| dditservices.com | #35,471 | Next.js, OpenResty, Sectigo + 4 more | Find emails |
| fontawesome.io | #35,529 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| roedu.net | #35,534 | ASP.NET, Microsoft 365, Modernizr + 1 more | Find emails |
| hostinguk.net | #35,619 | Bootstrap, DigiCert, Font Awesome + 7 more | Find emails |
| fieldwire.com | #35,634 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| ze.delivery | #35,659 | Amazon Route 53, Google Fonts, Google Maps + 5 more | Find emails |
| webnode.fr | #35,670 | Amazon Route 53, Convert, Envoy + 5 more | Find emails |
| unilim.fr | #35,673 | Bootstrap, Font Awesome, Let's Encrypt + 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 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →