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 |
|---|---|---|---|
| joyclub.de | #1,528 | Amazon Route 53, AppsFlyer, Cloudflare Bot Management + 4 more | Find emails |
| tokyomotion.net | #1,544 | Apache, Bootstrap, ExoClick + 7 more | Find emails |
| lioden.com | #1,561 | Bootstrap, Font Awesome, Google Analytics + 8 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| hentai.name |
| #1,605 |
| Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more |
| Find emails |
| dnsimple.com | #1,879 | Ahrefs Analytics, Amazon CloudFront, Atlassian Cloud + 17 more | Find emails |
| romarg.com | #1,917 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 11 more | Find emails |
| themeisle.com | #2,008 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Bot Management + 5 more | Find emails |
| intentiq.com | #2,053 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| amocrm.ru | #2,067 | DoubleClick (Google Ads), Google Ads Conversion, Google Analytics + 9 more | Find emails |
| mindbox.ru | #2,110 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 8 more | Find emails |
| acronis.com | #2,154 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 5 more | Find emails |
| archive.is | #2,156 | Let's Encrypt, Nginx, reCAPTCHA | Find emails |
| umbrella.com | #2,236 | Amazon CloudFront, Amplitude, Atlassian Cloud + 10 more | Find emails |
| archive.ph | #2,238 | Let's Encrypt, Nginx, reCAPTCHA | Find emails |
| trustedstack.com | #2,307 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| fliphtml5.com | #2,317 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
| last.fm | #2,388 | Amazon Advertising, Blockthrough, Bluesky + 12 more | Find emails |
| home-assistant.io | #2,528 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 12 more | Find emails |
| prezi.com | #2,640 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 12 more | Find emails |
| podbean.com | #2,719 | AOS, Bootstrap, Cloudflare + 17 more | Find emails |
| goguardian.com | #2,745 | AWS Lambda, Adobe Fonts (Typekit), Amazon CloudFront + 17 more | Find emails |
| comscore.com | #2,785 | ASP.NET, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| flurry.com | #2,796 | AWS Lambda, AddToAny, Adobe Fonts (Typekit) + 14 more | Find emails |
| ciscospark.com | #2,814 | Akamai Bot Manager, Akamai edge/CDN, Akamai mPulse + 7 more | Find emails |
| phys.org | #2,816 | Apache, Bluesky, DoubleClick (Google Ads) + 5 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 →