CAPTCHA & Bot Protection
484 of the 1,000,000 top sites in our Tranco top-1M census run Friendly Captcha (0%). A privacy-focused, non-interactive CAPTCHA alternative. Detection is homepage-level HTML/header fingerprinting, so a site can run Friendly Captcha on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | plausible.io | #3,823 (Tranco) | Find emails |
| 2 | proxmox.com | #4,085 (Tranco) | Find emails |
| 3 | airliquide.com | #15,947 (Tranco) | Find emails |
| 4 | baden-wuerttemberg.de |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| inxmail.de | #71,215 | Apache, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| roteskreuz.at | #72,040 | Google Tag Manager, Sectigo, TYPO3 + 2 more | Find emails |
| brisant.de | #72,085 | DigiCert, IOAM/INFOnline, Microsoft 365 + 1 more | Find emails |
| #16,359 (Tranco) |
| Find emails |
| 5 | nicsell.com | #18,806 (Tranco) | Find emails |
| gtai.de |
| #76,905 |
| CoreMedia CMS, CrazyEgg, LinkedIn Insight Tag + 3 more |
| Find emails |
| berliner-philharmoniker.de | #77,767 | Amazon CloudFront, Microsoft 365, Nginx + 4 more | Find emails |
| cnas.fr | #80,720 | Apache, Bootstrap, Drupal + 5 more | Find emails |
| nennung-online.de | #82,053 | Amazon (ACM), Cookiebot, Eye-Able + 6 more | Find emails |
| elk-wue.de | #83,113 | DigiCert, Font Awesome, Microsoft 365 + 2 more | Find emails |
| lefebvre-dalloz.fr | #86,665 | Amazon (ACM), Apache, Didomi + 6 more | Find emails |
| borgwarner.com | #87,999 | Cloudflare Bot Management, Cloudflare edge/CDN, Foundation + 5 more | Find emails |
| mannheim.de | #90,445 | Drupal, Let's Encrypt, Matomo + 2 more | Find emails |
| afnic.fr | #98,161 | Apache, Bootstrap, Font Awesome + 8 more | Find emails |
| familienportal.de | #102,218 | Matomo, jsDelivr | Find emails |
| bdew.de | #102,784 | Cloudflare edge/CDN, Django, Google Fonts + 7 more | Find emails |
| dena.de | #103,481 | Apache, Hotjar, PHP + 2 more | Find emails |
| blauer-engel.de | #105,065 | Apache, Cloudflare, Drupal + 6 more | Find emails |
| penguinrandomhouse.de | #107,931 | DigiCert, Microsoft 365, Nginx | Find emails |
| elbenwald.de | #111,552 | Sectigo, reCAPTCHA, unpkg | Find emails |
| claygate.co.uk | #113,860 | Cloudflare, Fastly, Google Fonts + 3 more | Find emails |
| rtr.at | #114,663 | DigiCert, Matomo, Microsoft 365 + 2 more | Find emails |
| onlyfy.com | #115,693 | Amazon Route 53, Bootstrap, Let's Encrypt + 7 more | Find emails |
| boltmasters.com.au | #115,724 | Fastly, Let's Encrypt, Microsoft 365 + 2 more | Find emails |
| informea.org | #115,904 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| termageddon.com | #117,176 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| index-education.net | #117,858 | AOS, Apache, Font Awesome + 4 more | Find emails |
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →