Security & WAF
56,626 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA v2 (5.7%). Google's challenge-response service that verifies whether a site visitor is human or a bot. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA v2 on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | apache.org | #125 (Tranco) | Find emails |
| 2 | w3.org | #184 (Tranco) | Find emails |
| 3 | pushy.io | #467 (Tranco) | Find emails |
| 4 | sharethrough.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| apn.net.au | #39,531 | Apache, Font Awesome, Google Ads Conversion + 9 more | Find emails |
| merlot.org | #39,532 | Amazon Route 53, Bootstrap, Font Awesome + 10 more | Find emails |
| diabetes.co.uk | #39,539 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 15 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| bang.com | #39,550 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| nips.cc | #39,560 | Apache, Bootstrap, D3.js + 9 more | Find emails |
| umcs.pl | #39,613 | Apache, DoubleClick (Google Ads), Google Ads Conversion + 8 more | Find emails |
| castify.ai | #39,618 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 13 more | Find emails |
| lnwshop.com | #39,648 | Google Analytics, Google Tag Manager, Google Workspace + 7 more | Find emails |
| ikmultimedia.com | #39,649 | Adobe Fonts (Typekit), Amazon (ACM), Bootstrap + 9 more | Find emails |
| prodirectsport.com | #39,666 | Adobe Fonts, Adobe Fonts (Typekit), Bazaarvoice + 9 more | Find emails |
| cdjapan.co.jp | #39,694 | Fancybox, Font Awesome, Google Ads Conversion + 6 more | Find emails |
| adme.ru | #39,700 | Amazon Advertising, Amazon Route 53, DoubleClick (Google Ads) + 8 more | Find emails |
| singulart.com | #39,712 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| rctech.net | #39,717 | Amazon Advertising, Cloudflare, Cloudflare Web Analytics + 16 more | Find emails |
| alternatehistory.com | #39,797 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 3 more | Find emails |
| getnetset.com | #39,826 | All in One SEO, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| inoc.net | #39,829 | Apache, Google Analytics, Google Fonts + 4 more | Find emails |
| myshiptracking.com | #39,883 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| nic.la | #39,895 | Adobe Fonts (Typekit), Apache, Font Awesome + 6 more | Find emails |
| bits.media | #39,932 | Google Analytics, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| zombeek.cz | #39,972 | Bootstrap, Chart.js, Font Awesome + 11 more | Find emails |
| revy.io | #39,978 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 10 more | Find emails |
| leatherman.com | #39,990 | Azure DNS, Cloudflare edge/CDN, Let's Encrypt + 5 more | Find emails |
| uspreventiveservicestaskforce.org | #40,019 | Amazon (ACM), Apache, Azure DNS + 5 more | Find emails |
| doorkeeper.jp | #40,089 | Envoy, Font Awesome, Google Analytics + 7 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →