CAPTCHA & Bot Protection
91,344 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9.1%). 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 | snapchat.com | #123 (Tranco) | Find emails |
| 2 | apache.org | #125 (Tranco) | Find emails |
| 3 | one.one | #160 (Tranco) | Find emails |
| 4 | w3.org |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| icr.org | #72,548 | Apache, Cloudflare edge/CDN, Drupal + 8 more | Find emails |
| delinea.com | #72,570 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 20 more | Find emails |
| f45training.com | #72,578 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 16 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| neweracap.jp | #72,579 | Cloudflare edge/CDN, CrazyEgg, Google Fonts + 12 more | Find emails |
| jolifin.de | #72,596 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 2 more | Find emails |
| cdprojekt.com | #72,606 | Amazon Route 53, Cookiebot, Foundation + 11 more | Find emails |
| myshakespeare.com | #72,619 | Drupal, Envoy, Google Analytics + 7 more | Find emails |
| coderanch.com | #72,629 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| lounge.com | #72,664 | Adobe Fonts, Adobe Fonts (Typekit), BrightEdge + 12 more | Find emails |
| polsatboxgo.pl | #72,670 | Apache, DigiCert, Google Analytics + 9 more | Find emails |
| trendingcyber.com | #72,680 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| prashantisarees.com | #72,695 | Cloudflare edge/CDN, Let's Encrypt, Mailchimp + 4 more | Find emails |
| epdf.pub | #72,702 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| certitudes.org | #72,704 | ASP.NET, Azure API Management, Google AdSense + 6 more | Find emails |
| peachjar.com | #72,709 | Amazon (ACM), Amazon Route 53, Cloudflare Bot Management + 16 more | Find emails |
| pokebip.com | #72,728 | Bootstrap, Font Awesome, Google AdSense + 9 more | Find emails |
| ems-pay-group-elephant.au | #72,742 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| futbolme.com | #72,747 | Bootstrap, Font Awesome, Google Analytics + 8 more | Find emails |
| phishtank.com | #72,753 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 5 more | Find emails |
| itokri.com | #72,760 | Cloudflare edge/CDN, Google Hosted Libraries, Let's Encrypt + 10 more | Find emails |
| folhamax.com | #72,780 | Axios, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| rttf.ru | #72,788 | Let's Encrypt, Mail.ru Analytics (Top100), Nginx + 4 more | Find emails |
| eac.gov | #72,789 | AddToAny, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| refdesk.com | #72,797 | Cloudflare, DoubleClick (Google Ads), Google AdSense + 6 more | Find emails |
| trixti.com.br | #72,824 | Amazon Route 53, Apache, Bootstrap + 10 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 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →