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 |
|---|---|---|---|
| buy2fix.co.uk | #145,880 | Cloudflare edge/CDN, Judge.me, Let's Encrypt + 4 more | Find emails |
| nationalcenter.org | #145,888 | AddToAny, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| turnerconstruction.com | #145,915 | BugHerd, Cookie-Script, Google Tag Manager + 5 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| naturehills.com | #145,925 | Amazon Route 53, BrightEdge, Cloudflare edge/CDN + 9 more | Find emails |
| ppgpaints.com | #145,935 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 8 more | Find emails |
| freedom-sex.com | #145,953 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 4 more | Find emails |
| winho.com.tw | #145,980 | Axios, Bootstrap, Font Awesome + 16 more | Find emails |
| amara.com | #146,002 | ASP.NET, Akamai Bot Manager, Akamai Edge DNS + 11 more | Find emails |
| qna.org.qa | #146,004 | ASP.NET, AddToAny, Azure API Management + 19 more | Find emails |
| facade.com | #146,060 | Apache, Google AdSense, Google Analytics + 2 more | Find emails |
| ahosting.cz | #146,074 | Google AdSense, Google Analytics, Let's Encrypt + 3 more | Find emails |
| teachmint.com | #146,099 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 17 more | Find emails |
| dclottery.com | #146,143 | Cloudflare, Drupal, Google Tag Manager + 5 more | Find emails |
| arteinformado.com | #146,171 | Apache, Bootstrap, DoubleClick (Google Ads) + 8 more | Find emails |
| berria.eus | #146,176 | Bluesky, Cloudflare, Google Tag Manager + 5 more | Find emails |
| optimabank.kg | #146,197 | AOS, Apache, Font Awesome + 11 more | Find emails |
| bagallery.com | #146,233 | AdRoll, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| themagnifico.net | #146,254 | Cloudflare edge/CDN, Font Awesome, Google Fonts + 10 more | Find emails |
| motorsportjobs.com | #146,266 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| jstatsoft.org | #146,275 | Apache, Bootstrap, Font Awesome + 6 more | Find emails |
| budgetyourtrip.com | #146,292 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| callitspring.com | #146,294 | Amazon Route 53, Bloomreach, Cloudflare edge/CDN + 7 more | Find emails |
| clearinghouse.net | #146,306 | Amazon CloudFront, Amazon Route 53, Apache + 13 more | Find emails |
| aldf.org | #146,323 | Bluesky, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| offenderradar.com | #146,334 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 13 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 →