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.
| # | 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 |
|---|---|---|---|
| pictorem.com | #51,995 | Ahrefs Analytics, Bootstrap, Cloudflare + 15 more | Find emails |
| av-comparatives.org | #52,002 | Cloudflare, Cloudflare edge/CDN, CookieYes + 16 more | Find emails |
| floridarealtors.org | #52,033 | Apache, Bootstrap, DataTables + 3 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| synoint.com | #52,044 | Amazon Route 53, Apache, Bootstrap + 9 more | Find emails |
| pokerist.com | #52,045 | Fancybox, Google Fonts, Google Hosted Libraries + 5 more | Find emails |
| projectmanager.com | #52,064 | ASP.NET, Amazon CloudFront, Amazon Route 53 + 12 more | Find emails |
| forbo.com | #52,065 | ASP.NET, Azure API Management, CSC (Digital Brand Services) + 10 more | Find emails |
| speedapp.io | #52,072 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| ugreen.com | #52,079 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| brighthorizons.com | #52,097 | Adyen, Amazon CloudFront, Azure API Management + 29 more | Find emails |
| base.be | #52,102 | Adobe Advertising Cloud, Adobe Audience Manager, Adobe Experience Cloud (Launch) + 7 more | Find emails |
| vibram.com | #52,122 | Bootstrap, Cloudflare edge/CDN, DigiCert + 6 more | Find emails |
| daysmartrecreation.com | #52,132 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 14 more | Find emails |
| boox.com | #52,147 | Alibaba Cloud DNS, Cloudflare edge/CDN, GoAffPro + 7 more | Find emails |
| ipsw.me | #52,149 | Bluesky, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| milwaukeetool.eu | #52,173 | ASP.NET, Chatling, Cloudflare + 13 more | Find emails |
| ivastudio.ai | #52,184 | Amazon (ACM), Amazon Route 53, Bootstrap + 4 more | Find emails |
| cityandstateny.com | #52,193 | Adobe Fonts (Typekit), Azure DNS, Azure Front Door + 15 more | Find emails |
| satom.ru | #52,211 | Google Fonts, Google Hosted Libraries, Nginx + 2 more | Find emails |
| bigwinboard.com | #52,220 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| promediateknologi.id | #52,222 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 16 more | Find emails |
| younow.com | #52,227 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| sexlikereal.com | #52,230 | Ahrefs Analytics, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| jobteaser.com | #52,250 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 18 more | Find emails |
| fastfox.pro | #52,267 | Bootstrap, Cloudflare, Fancybox + 11 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 →