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 |
|---|---|---|---|
| mellerbrand.com | #61,752 | Amazon Route 53, Bootstrap, Cloudflare edge/CDN + 8 more | Find emails |
| a12.com | #61,839 | Adopt, Amazon Route 53, Font Awesome + 10 more | Find emails |
| host.io | #61,854 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN + 7 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| showmelocal.com | #61,897 | ASP.NET, Amazon Route 53, Clicky + 6 more | Find emails |
| goosecreek.com | #61,903 | Cloudflare, Cloudflare edge/CDN, Gladly + 10 more | Find emails |
| docdro.id | #61,928 | Laravel, Let's Encrypt, reCAPTCHA | Find emails |
| lectricebikes.com | #61,951 | Adobe Fonts (Typekit), Attentive, Bootstrap + 9 more | Find emails |
| fanfics.me | #62,032 | Let's Encrypt, LiveInternet (Yadro), Nginx + 5 more | Find emails |
| lephoceen.fr | #62,071 | DoubleClick (Google Ads), Google Analytics, Google Publisher Tag + 8 more | Find emails |
| weszlo.com | #62,109 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| coolstuffinc.com | #62,142 | Ahrefs Analytics, Apache, Cloudinary + 11 more | Find emails |
| myjobmag.com | #62,158 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| healthnet.com | #62,220 | AddToAny, Adobe Experience Cloud (Launch), Amazon (ACM) + 22 more | Find emails |
| zonatmo.org | #62,221 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| quizzclub.com | #62,222 | ASP.NET, Azure DNS, Google AdSense + 8 more | Find emails |
| zulip.com | #62,264 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| futbolowo.pl | #62,266 | DoubleClick (Google Ads), Font Awesome, Google AdSense + 10 more | Find emails |
| gurneys.com | #62,283 | Adobe Fonts (Typekit), Attentive, Cloudflare edge/CDN + 11 more | Find emails |
| regeneron.com | #62,298 | ASP.NET, Adobe Experience Cloud (Launch), Bootstrap + 12 more | Find emails |
| teeinblue.com | #62,315 | Cloudflare, Cloudflare edge/CDN, Crisp + 9 more | Find emails |
| flipbookpdf.net | #62,340 | Apache, Bootstrap, Cloudflare + 12 more | Find emails |
| brecks.com | #62,388 | Attentive, BrightEdge, Cloudflare edge/CDN + 13 more | Find emails |
| openspeedtest.com | #62,423 | DoubleClick (Google Ads), Google AdSense, Google Analytics + 4 more | Find emails |
| safeworkaustralia.gov.au | #62,450 | Akamai Bot Manager, Akamai edge/CDN, Drupal + 7 more | Find emails |
| adstir.com | #62,487 | Bootstrap, Font Awesome, Google Cloud DNS + 9 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 →