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 |
|---|---|---|---|
| soft98.ir | #50,103 | Let's Encrypt | Find emails |
| falcoware.com | #50,104 | Bootstrap, Google Analytics, Google Tag Manager + 3 more | Find emails |
| vosgesmatin.fr | #50,106 | ConsentMo, Google Tag Manager, reCAPTCHA v2 | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| #50,129 |
| Let's Encrypt, reCAPTCHA v2 |
| Find emails |
| dailycal.org | #50,144 | Cloudflare, Google Fonts, Google Publisher Tag + 4 more | Find emails |
| rothys.com | #50,163 | Amazon Route 53, Amplitude, Cloudflare edge/CDN + 10 more | Find emails |
| talkdesk.com | #50,190 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| principiaskin.com | #50,207 | Google Analytics, Google Fonts, Google Tag Manager + 7 more | Find emails |
| ibef.org | #50,267 | Amazon Route 53, Bootstrap, Google Analytics + 6 more | Find emails |
| intrans.az | #50,297 | Let's Encrypt, Next.js, Nginx + 3 more | Find emails |
| greensboro.com | #50,333 | Amazon Advertising, Font Awesome, Google AdSense + 15 more | Find emails |
| cxl.com | #50,420 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 9 more | Find emails |
| vitalant.org | #50,429 | Adobe Fonts (Typekit), Bootstrap, DigiCert + 7 more | Find emails |
| theeroticreview.com | #50,471 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 4 more | Find emails |
| swiftreg.co.uk | #50,566 | Bootstrap, ChatGPT Ads Pixel, Cloudflare + 10 more | Find emails |
| wellplated.com | #50,611 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 12 more | Find emails |
| portlandleathergoods.com | #50,650 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 8 more | Find emails |
| iceporn.com | #50,687 | Cloudflare, Let's Encrypt, Nginx + 1 more | Find emails |
| burga.com | #50,692 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 8 more | Find emails |
| fiskars.com | #50,705 | CSC (Digital Brand Services), Cloudflare edge/CDN, Let's Encrypt + 5 more | Find emails |
| toyota.ca | #50,729 | Amazon CloudFront, Cloudflare, DigiCert + 5 more | Find emails |
| sohonet.com | #50,765 | Cloudflare edge/CDN, Google Fonts, Google Tag Manager + 5 more | Find emails |
| pecheur.com | #50,770 | AB Tasty, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| bestdates.com | #50,779 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| unab.cl | #50,784 | AOS, Cloudflare, Cloudflare edge/CDN + 8 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 →