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 |
|---|---|---|---|
| wmnf.org | #197,977 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| wsigenesis.com | #197,984 | Font Awesome, Google Analytics, Google Tag Manager + 7 more | Find emails |
| cam4tracking.com | #198,001 | Font Awesome, Google Analytics, Google Fonts + 5 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| vrngmu.ru | #198,007 | Fancybox, Let's Encrypt, Nginx + 4 more | Find emails |
| pressat.co.uk | #198,042 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| hakusensha.co.jp | #198,045 | Amazon Route 53, Cloudflare edge/CDN, Google Analytics + 3 more | Find emails |
| clickcritters.com | #198,149 | Google AdSense, Google Analytics, Google Tag Manager + 3 more | Find emails |
| shinetsu.co.jp | #198,163 | DigiCert, Font Awesome, Google Analytics + 5 more | Find emails |
| 4tharq.com | #198,180 | Cloudflare edge/CDN, Google Fonts, Klaviyo + 9 more | Find emails |
| mynetfone.com.au | #198,190 | Amazon Route 53, Cloudflare edge/CDN, Google Fonts + 4 more | Find emails |
| elkodaily.com | #198,220 | Amazon Advertising, Font Awesome, Google AdSense + 15 more | Find emails |
| mrsc.org | #198,227 | Bootstrap, Google Analytics, Google Fonts + 6 more | Find emails |
| agi.com | #198,248 | ASP.NET, Amazon Route 53, DigiCert + 8 more | Find emails |
| oxytech.au | #198,264 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 2 more | Find emails |
| fakehub.com | #198,316 | Amazon Route 53, Google Fonts, Let's Encrypt + 3 more | Find emails |
| hertz.co.uk | #198,324 | Dynatrace, Google Fonts, Google Tag Manager + 6 more | Find emails |
| plagscan.com | #198,351 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| bupasalud.com.mx | #198,354 | Bootstrap, Drupal, Font Awesome + 5 more | Find emails |
| pscall.net | #198,358 | Bootstrap, Font Awesome, PHP + 4 more | Find emails |
| spiele-offensive.de | #198,366 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| khushbujewellers.com | #198,379 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 7 more | Find emails |
| fraud.org | #198,424 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| inmemoriam.ca | #198,498 | Amazon (ACM), Google Analytics, Google Publisher Tag + 3 more | Find emails |
| wgs-static.com | #198,558 | GoDaddy Website Builder, GoDaddy | Find emails |
| pdhsports.com | #198,565 | Cloudflare edge/CDN, Cookiebot, Klaviyo + 7 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 →