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 |
|---|---|---|---|
| global-x.ru | #37,717 | Let's Encrypt, Nginx, WordPress | Find emails |
| adsmovil.com | #37,780 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 5 more | Find emails |
| cepr.net | #37,814 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 11 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| windsorstore.com |
| #37,856 |
| Certona (Monetate), Cloudflare edge/CDN, Cloudinary + 13 more |
| Find emails |
| alexhost.com | #37,877 | Cloudflare, Let's Encrypt, WordPress + 1 more | Find emails |
| advrider.com | #37,903 | Fastly, Font Awesome, Google Cloud DNS + 12 more | Find emails |
| dualshockers.com | #37,905 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| innity.com | #37,907 | Bootstrap, Font Awesome, Google Ads Conversion + 9 more | Find emails |
| wearpact.com | #37,939 | Afterpay, Cloudflare, DigiCert + 16 more | Find emails |
| baynews9.com | #37,950 | Adobe Experience Cloud (Launch), Adobe Target, Amazon (ACM) + 3 more | Find emails |
| rolls-roycemotorcars.com | #37,978 | Akamai mPulse, Google Analytics, Google Tag Manager + 6 more | Find emails |
| chinahighlights.com | #37,986 | Google AdSense, Google Analytics, Google Tag Manager + 2 more | Find emails |
| buyandsellhair.com | #38,044 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| intercity.pl | #38,049 | Akamai Bot Manager, Akamai Edge DNS, AppDynamics + 6 more | Find emails |
| milesight.com | #38,058 | Citrix NetScaler, Google Analytics, Google Tag Manager + 4 more | Find emails |
| helloextend.com | #38,069 | Amazon Route 53, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| troyhunt.com | #38,071 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 13 more | Find emails |
| aisnet.org | #38,078 | Google Analytics, Google Fonts, Google Tag Manager + 7 more | Find emails |
| forward.lc | #38,085 | Google Tag Manager, OpenResty, Angular | Find emails |
| diag.pl | #38,108 | Google Analytics, Google Tag Manager, Imperva + 3 more | Find emails |
| powerball.com | #38,119 | Adobe Fonts (Typekit), Amazon Advertising, Azure DNS + 4 more | Find emails |
| twt.it | #38,137 | Cookiebot, Font Awesome, Google Fonts + 7 more | Find emails |
| ultimedia.com | #38,147 | Amazon Route 53, Bootstrap, Fancybox + 6 more | Find emails |
| atlinkservices.com | #38,162 | Cloudflare edge/CDN, Google Analytics, Google Fonts + 4 more | Find emails |
| ttarget.ru | #38,223 | Bootstrap, Google Analytics, Google Fonts + 5 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 →