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 |
|---|---|---|---|
| plusliga.pl | #203,106 | Bootstrap, Font Awesome, Let's Encrypt + 3 more | Find emails |
| herschel.com | #203,129 | Amazon Route 53, Cloudflare edge/CDN, ConsentMo + 9 more | Find emails |
| mag-news.it | #203,135 | Amazon Route 53, Font Awesome, Google Fonts + 5 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| yikehw.com | #203,136 | Bootstrap, Google Analytics, Google Fonts + 3 more | Find emails |
| ypo.org | #203,153 | Azure DNS, Font Awesome, Google Maps + 12 more | Find emails |
| umbra.com | #203,160 | Azure DNS, Bazaarvoice, Cloudflare edge/CDN + 6 more | Find emails |
| verawang.com | #203,164 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 3 more | Find emails |
| fliesenadeneuer.de | #203,167 | Font Awesome, Google Tag Manager, Let's Encrypt + 3 more | Find emails |
| lgparts.com | #203,178 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| lulusar.com | #203,230 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 8 more | Find emails |
| umniabank.ma | #203,237 | AB Tasty, Drupal, Google Ads Conversion + 9 more | Find emails |
| auto-vox.com | #203,274 | Cloudflare edge/CDN, Google Analytics, Google Fonts + 6 more | Find emails |
| happy-visitor.com | #203,290 | Bootstrap, CookieYes, Font Awesome + 12 more | Find emails |
| shopto.net | #203,291 | Amazon Route 53, Bootstrap, Braintree + 20 more | Find emails |
| tests.com | #203,338 | Adobe Fonts (Typekit), Bootstrap, Clicky + 10 more | Find emails |
| quinstance.com | #203,343 | Cloudflare edge/CDN, Google Cloud DNS, Google Fonts + 5 more | Find emails |
| deyga.in | #203,370 | Cloudflare edge/CDN, Google Tag Manager, Let's Encrypt + 7 more | Find emails |
| leslainesbiscotte.com | #203,385 | Cloudflare edge/CDN, CookieYes, Google Cloud DNS + 5 more | Find emails |
| nova2025linksys.com | #203,406 | GoDaddy Website Builder, GoDaddy | Find emails |
| bernalcutlery.com | #203,468 | Cloudflare edge/CDN, Google Cloud DNS, Let's Encrypt + 5 more | Find emails |
| cnps.org | #203,483 | Font Awesome, Google Analytics, Google Fonts + 10 more | Find emails |
| thegolfsociety.com.au | #203,497 | Cloudflare edge/CDN, Let's Encrypt, Mailchimp + 5 more | Find emails |
| globalccsinstitute.com | #203,504 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| aquarius-dir.com | #203,511 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| ik-seite.de | #203,520 | Cloudflare Turnstile, Google AdSense, Let's Encrypt + 1 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 →