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 |
|---|---|---|---|
| laduree.com | #115,837 | CSC (Digital Brand Services), Cloudflare edge/CDN, Gorgias + 6 more | Find emails |
| fsr.com | #115,841 | ASP.NET, Bootstrap, DigiCert + 9 more | Find emails |
| oldhouses.com | #115,861 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| eyemartexpress.com |
| #115,864 |
| Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 6 more |
| Find emails |
| franchising.com | #115,908 | Algolia, Bluesky, Bootstrap + 27 more | Find emails |
| clip2net.com | #115,921 | Cloudflare, Fancybox, Google Analytics + 10 more | Find emails |
| host-forest.com | #115,964 | Chart.js, Cloudflare, Font Awesome + 7 more | Find emails |
| adfoc.us | #116,003 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| colorescience.com | #116,017 | Attentive, Cloudflare edge/CDN, GetSiteControl + 10 more | Find emails |
| alessi.com | #116,082 | Cloudflare edge/CDN, Gorgias, Klaviyo + 6 more | Find emails |
| adriannapapell.com | #116,097 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 9 more | Find emails |
| mtstandard.com | #116,113 | 33Across, Advertising.com, Amazon Advertising + 44 more | Find emails |
| brookstone.com | #116,139 | Cloudflare, Cloudflare edge/CDN, Google Hosted Libraries + 11 more | Find emails |
| ankerjapan.com | #116,140 | Cloudflare edge/CDN, Google Fonts, Google Tag Manager + 8 more | Find emails |
| arbtalk.co.uk | #116,192 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| yduqs.com.br | #116,234 | AOS, ASP.NET, AddToAny + 15 more | Find emails |
| focusgn.com | #116,236 | Auth0, Bootstrap, Cloudflare + 11 more | Find emails |
| calendarwiz.com | #116,272 | Apache, Bootstrap, Font Awesome + 10 more | Find emails |
| zippyonline.com | #116,296 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 8 more | Find emails |
| scholl-shoes.com | #116,322 | Cloudflare edge/CDN, Cookiebot, Google Hosted Libraries + 10 more | Find emails |
| ffclub.ru | #116,429 | Google AdSense, Google Analytics, Google Hosted Libraries + 11 more | Find emails |
| atlanticbooks.com | #116,446 | Cloudflare edge/CDN, Judge.me, Klaviyo + 7 more | Find emails |
| vdh.de | #116,449 | Consentmanager.net, Google Analytics, Google Tag Manager + 6 more | Find emails |
| topg.org | #116,471 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| litecoinpool.org | #116,473 | Cloudflare Turnstile, Google Fonts, Google Hosted Libraries + 4 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 →