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 |
|---|---|---|---|
| spantrix.com | #58,598 | AOS, Bootstrap, DoubleClick (Google Ads) + 14 more | Find emails |
| quickscores.com | #58,605 | Adobe Experience Cloud (Launch), Amazon Route 53, Apache + 14 more | Find emails |
| yulpa.io | #58,611 | Apache, Bootstrap, Fancybox + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| meetwithmature.com | #58,643 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| 49s.co.uk | #58,646 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| qth.com | #58,650 | Apache, Cloudflare, Font Awesome + 4 more | Find emails |
| veritone.com | #58,658 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 16 more | Find emails |
| portforward.com | #58,685 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| ndemiccreations.com | #58,698 | Google Analytics, Let's Encrypt, Nginx + 4 more | Find emails |
| hubinternational.com | #58,713 | Adobe Experience Cloud (Launch), Amazon CloudFront, Azure API Management + 15 more | Find emails |
| groupm7.com | #58,721 | Adobe Fonts (Typekit), Apache, Bootstrap + 18 more | Find emails |
| workflowy.com | #58,725 | Amazon CloudFront, Atlassian Cloud, Cloudflare + 14 more | Find emails |
| billbee.io | #58,761 | AWS Lambda, Adobe Fonts (Typekit), Amazon CloudFront + 12 more | Find emails |
| trf6.jus.br | #58,763 | AOS, Amazon Route 53, Backbone.js + 9 more | Find emails |
| netflu.com.br | #58,794 | Cloudflare, Google Analytics, Google Tag Manager + 6 more | Find emails |
| teket.jp | #58,857 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| 123stitch.com | #58,868 | Apache, Google Analytics, Google Tag Manager + 2 more | Find emails |
| dissercat.com | #58,870 | Google Analytics, Google Fonts, Google Tag Manager + 5 more | Find emails |
| perksatwork.com | #58,881 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 14 more | Find emails |
| greateasternlife.com | #58,887 | Adobe Experience Manager Edge Delivery (Helix RUM), Akamai Edge DNS, Apache + 6 more | Find emails |
| asla.org | #58,892 | ASP.NET, Azure API Management, Cloudflare Bot Management + 9 more | Find emails |
| kyeonggi.com | #58,893 | Bootstrap, Daum, DoubleClick (Google Ads) + 14 more | Find emails |
| wowonder.com | #58,895 | Apache, Bootstrap, Font Awesome + 7 more | Find emails |
| altisport.cz | #58,898 | Google Tag Manager, Let's Encrypt, Nginx + 1 more | Find emails |
| myget.org | #58,919 | ASP.NET, Azure API Management, Bootstrap + 15 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 →