CAPTCHA & Bot Protection
91,344 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9.1%). Google's CAPTCHA/bot-scoring widget, the most widely deployed CAPTCHA by far. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | snapchat.com | #123 (Tranco) | Find emails |
| 2 | apache.org | #125 (Tranco) | Find emails |
| 3 | one.one | #160 (Tranco) | Find emails |
| 4 | w3.org |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| polbox.tv | #106,582 | Bootstrap, Font Awesome, Google Tag Manager + 11 more | Find emails |
| salvagereseller.com | #106,584 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| kindermorgan.com | #106,586 | ASP.NET, Akamai Edge DNS, Cloudflare edge/CDN + 14 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| postgen.com | #106,619 | Cloudflare, Let's Encrypt, Squarespace + 1 more | Find emails |
| hospitalitaliano.org.ar | #106,621 | Bootstrap, Font Awesome, Google Ads Conversion + 7 more | Find emails |
| golfbox.com.au | #106,630 | Adobe Fonts (Typekit), BigCommerce, Cloudflare + 17 more | Find emails |
| escapebeyond.com.au | #106,635 | Elementor, Font Awesome, Let's Encrypt + 7 more | Find emails |
| fultoncountyga.gov | #106,641 | Azure API Management, Bootstrap, Google Analytics + 6 more | Find emails |
| sitebunker.net | #106,645 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| topdon.com | #106,652 | Alibaba Cloud DNS, Bootstrap, Cloudflare edge/CDN + 10 more | Find emails |
| lille.fr | #106,654 | Imperva, Matomo, Meta Pixel + 3 more | Find emails |
| woonsocketcall.com | #106,709 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 5 more | Find emails |
| wunderflats.com | #106,721 | All in One SEO, Bootstrap, CDN Fonts + 17 more | Find emails |
| geistm.com | #106,726 | All in One SEO, Font Awesome, Google Analytics + 10 more | Find emails |
| journal-news.com | #106,740 | Blockthrough, Google Fonts, Google Tag Manager + 6 more | Find emails |
| dipusevilla.es | #106,742 | AddThis, Bootstrap, Google Analytics + 5 more | Find emails |
| artelista.com | #106,758 | Amazon (ACM), Amazon Route 53, Apache + 14 more | Find emails |
| famousdaves.com | #106,759 | ASP.NET, Amazon Route 53, Azure API Management + 17 more | Find emails |
| netoxygen.ch | #106,760 | All in One SEO, Apache, Fancybox + 8 more | Find emails |
| dentalhealth.org | #106,763 | ASP.NET, Adobe Fonts (Typekit), Azure API Management + 16 more | Find emails |
| vigilix.net | #106,765 | ASP.NET, Amazon CloudFront, Atlassian Cloud + 7 more | Find emails |
| lz.de | #106,799 | Apache, Consentmanager.net, Font Awesome + 7 more | Find emails |
| renogy.com | #106,811 | Attentive, Cloudflare edge/CDN, GetSiteControl + 12 more | Find emails |
| bluevine.com | #106,815 | Amazon Route 53, DigiCert, Next.js + 8 more | Find emails |
| gameseal.com | #106,838 | Cloudflare, Cloudflare edge/CDN, CookieYes + 1 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 →