Security & WAF
15,494 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA v3 (1.5%). Google's bot-detection service that scores traffic in the background without user interaction to block automated abuse. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA v3 on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | taboola.com | #187 (Tranco) | Find emails |
| 2 | afternic.com | #315 (Tranco) | Find emails |
| 3 | g.page | #451 (Tranco) | Find emails |
| 4 | teamviewer.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| rallyhouse.com | #48,751 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| eroski.es | #48,804 | ASP.NET, Bootstrap, DigiCert + 13 more | Find emails |
| cintas.com | #48,970 | Adobe Fonts (Typekit), Azure API Management, Bootstrap + 12 more | Find emails |
| #561 (Tranco) |
| Find emails |
| 5 | klaviyo.com | #597 (Tranco) | Find emails |
| penguin.com.au | #48,984 | Amazon Route 53, Azure API Management, Azure Front Door + 11 more | Find emails |
| sacurrent.com | #48,994 | Bluesky, Cloudflare, Google Analytics + 11 more | Find emails |
| vfw.org | #49,032 | ASP.NET, Bootstrap, Google Ads Conversion + 7 more | Find emails |
| indiedb.com | #49,045 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| uep24.ru | #49,049 | Bootstrap, Font Awesome, Google Fonts + 7 more | Find emails |
| zupyak.com | #49,177 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 6 more | Find emails |
| xyzscripts.com | #49,196 | AOS, Bootstrap, Cloudflare + 14 more | Find emails |
| qbt.com.au | #49,243 | Apache, Bootstrap, Cloudflare + 6 more | Find emails |
| atlantico.fr | #49,278 | Cloudflare, Cloudflare edge/CDN, Didomi + 8 more | Find emails |
| powerlineblog.com | #49,303 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 19 more | Find emails |
| receitasnestle.com.br | #49,417 | Adobe Fonts, Adobe Fonts (Typekit), ConsentMo + 14 more | Find emails |
| ceo.ca | #49,435 | Amazon (ACM), Amazon Route 53, Google Fonts + 5 more | Find emails |
| unt.edu.ar | #49,502 | Apache, Bootstrap, Font Awesome + 10 more | Find emails |
| traffer.net | #49,584 | Bootstrap, Cloudflare, Font Awesome + 6 more | Find emails |
| claro.com.pe | #49,608 | DigiCert, Google Analytics, Google Fonts + 4 more | Find emails |
| subscribestar.adult | #49,643 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| wellstar.org | #49,649 | ASP.NET, Amazon CloudFront, Azure API Management + 16 more | Find emails |
| swipedon.com | #49,854 | Adobe Fonts (Typekit), Amazon CloudFront, Amazon Route 53 + 17 more | Find emails |
| events.com | #49,944 | Amazon (ACM), Amazon Route 53, Elementor + 19 more | Find emails |
| coldplay.com | #50,011 | Adobe Experience Cloud (Launch), Apache, Let's Encrypt + 6 more | Find emails |
| euronics.it | #50,017 | Cloudflare edge/CDN, DigiCert, Google Maps + 11 more | Find emails |
| tecnofit.com.br | #50,021 | Amazon CloudFront, Amazon Route 53, Atlassian Statuspage + 15 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 →