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 |
|---|---|---|---|
| acortar.link | #32,670 | AngularJS, Bootstrap, Chatra + 13 more | Find emails |
| gigaserver.cz | #32,689 | Apache, Font Awesome, Google Analytics + 13 more | Find emails |
| gruposbf.com.br | #32,730 | Adopt, Akamai Edge DNS, Cookie-Script + 12 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| chat2desk.com | #32,799 | Cloudflare, DigiCert, Google Tag Manager + 7 more | Find emails |
| freeforums.net | #32,810 | Envoy, Fastly, Google Cloud DNS + 4 more | Find emails |
| thetravel.com | #32,826 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| multichain.com | #32,867 | AddThis, Apache, Bootstrap + 12 more | Find emails |
| holid.io | #32,896 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 18 more | Find emails |
| fera.ai | #32,956 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 15 more | Find emails |
| aucfan.com | #32,977 | A8.net, Amazon (ACM), Amazon Route 53 + 10 more | Find emails |
| rocketlawyer.com | #33,035 | AB Tasty, Cloudflare, Dynatrace + 12 more | Find emails |
| kolibrigames.com | #33,049 | Azure DNS, Azure Front Door, Microsoft 365 + 3 more | Find emails |
| newsbank.com | #33,146 | Amazon Route 53, Drupal, Fastly + 10 more | Find emails |
| gardena.com | #33,317 | AdRoll, Amazon Advertising, CSC (Digital Brand Services) + 21 more | Find emails |
| rchsd.org | #33,332 | BugHerd, Fancybox, Google Fonts + 9 more | Find emails |
| ip-home.net | #33,418 | Bootstrap, Font Awesome, Nginx + 5 more | Find emails |
| mediaxchange.co | #33,474 | Apache, Bootstrap, Express + 10 more | Find emails |
| newser.com | #33,485 | ASP.NET, Azure DNS, Azure Front Door + 12 more | Find emails |
| flo.com.tr | #33,556 | Google Cloud DNS, Microsoft 365, reCAPTCHA + 1 more | Find emails |
| mangools.com | #33,576 | AddToAny, Amazon Route 53, Google Fonts + 14 more | Find emails |
| procergs.com.br | #33,577 | Font Awesome, Google Analytics, Google Tag Manager + 8 more | Find emails |
| hyperx.com | #33,587 | Adobe Fonts, Adobe Fonts (Typekit), Cloudflare edge/CDN + 7 more | Find emails |
| advisor.travel | #33,605 | AddToAny, Bootstrap, Cloudflare + 21 more | Find emails |
| seoclerk.com | #33,630 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 9 more | Find emails |
| camfrog.com | #33,632 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 20 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 →