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 |
|---|---|---|---|
| kidshealth.org | #6,526 | Adobe Experience Cloud (Launch), CSC (Digital Brand Services), Fastly + 9 more | Find emails |
| infor.pl | #6,553 | DoubleClick (Google Ads), Gemius, Google Publisher Tag + 4 more | Find emails |
| military.com | #6,566 | Amazon Route 53, Google Analytics, Google Tag Manager + 6 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| getpublica.com | #6,603 | AWS Lambda, Amazon CloudFront, Amazon Route 53 + 15 more | Find emails |
| login.gov | #6,620 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 12 more | Find emails |
| twitcasting.tv | #6,660 | Apache, DigiCert, Google Tag Manager + 2 more | Find emails |
| vodafone.pt | #6,710 | Citrix NetScaler, Cludo, DigiCert + 5 more | Find emails |
| chunichi.co.jp | #6,713 | Adingo, Amazon Route 53, Apache + 8 more | Find emails |
| tucows.com | #6,717 | AWS Lambda, Cloudflare edge/CDN, Google Analytics + 11 more | Find emails |
| noip.com | #6,719 | Cloudflare edge/CDN, DigiCert, FirstPromoter + 18 more | Find emails |
| famousbirthdays.com | #6,901 | Cloudflare edge/CDN, DoubleClick (Google Ads), Google Publisher Tag + 5 more | Find emails |
| dlink.com | #6,905 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 9 more | Find emails |
| controlup.com | #6,942 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 27 more | Find emails |
| playmogo.com | #6,983 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| ngrok.com | #7,038 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 16 more | Find emails |
| control4.com | #7,102 | AWS Lambda, Adobe Fonts (Typekit), Amazon CloudFront + 24 more | Find emails |
| no-ip.org | #7,163 | DigiCert, FirstPromoter, Google Fonts + 6 more | Find emails |
| djangoproject.com | #7,165 | Amazon Route 53, Bluesky, Django + 8 more | Find emails |
| klevu.com | #7,291 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| alchemy.com | #7,324 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 17 more | Find emails |
| t24.com.tr | #7,350 | AOS, Bluesky, Bootstrap + 20 more | Find emails |
| nzz.ch | #7,381 | Adobe Audience Manager, Adobe Fonts (Typekit), AppNexus + 14 more | Find emails |
| sejda.com | #7,396 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 2 more | Find emails |
| manga18.club | #7,398 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| jfrog.io | #7,490 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 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 →