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 |
|---|---|---|---|
| fastcentrik.eu | #355,831 | ASP.NET, Bootstrap, Google Fonts + 6 more | Find emails |
| video-dom2.ru | #355,897 | Bootstrap, Font Awesome, Google AdSense + 10 more | Find emails |
| vemer.it | #355,951 | AOS, ASP.NET, Cloudflare + 8 more | Find emails |
| #561 (Tranco) |
| Find emails |
| 5 | klaviyo.com | #597 (Tranco) | Find emails |
| guggenheiminvestments.com |
| #356,033 |
| ASP.NET, Azure API Management, Azure Front Door + 14 more |
| Find emails |
| planningresource.co.uk | #356,071 | ASP.NET, Azure API Management, Cloudflare + 16 more | Find emails |
| carlisleevents.com | #356,102 | ASP.NET, Bootstrap, DoubleClick (Google Ads) + 12 more | Find emails |
| orange.jobs | #356,128 | DigiCert, Google Maps, Google Tag Manager + 4 more | Find emails |
| daily8.com | #356,372 | Amazon (ACM), Amazon CloudFront, DoubleClick (Google Ads) + 9 more | Find emails |
| royalberkshire.nhs.uk | #356,484 | ASP.NET, Bootstrap, BrowseAloud + 9 more | Find emails |
| ita.sport | #356,491 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Web Analytics + 16 more | Find emails |
| ascentis.com.sg | #356,513 | All in One SEO, Amazon (ACM), Cloudflare + 7 more | Find emails |
| xhostsolutions.net.au | #356,546 | ASP.NET, Cloudflare, Google Analytics + 9 more | Find emails |
| 24hoursoflemons.com | #356,607 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 17 more | Find emails |
| healthlottery.co.uk | #356,621 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| vantagescore.com | #356,627 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| shown.io | #356,655 | AOS, Apache, Bootstrap + 21 more | Find emails |
| defensys.com | #356,728 | Drupal, Microsoft 365, Nginx + 2 more | Find emails |
| elders.com.au | #356,741 | Adobe Experience Cloud (Launch), Cloudflare, Cloudflare Bot Management + 13 more | Find emails |
| eidos.co.uk | #356,750 | Amazon Route 53, BugHerd, DigitalOcean Spaces + 11 more | Find emails |
| freedomalternative.com | #356,836 | Google Fonts, Let's Encrypt, Nginx + 5 more | Find emails |
| 4-pieds.com | #356,907 | Avis Vérifiés, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| patioenclosures.com | #356,925 | ASP.NET, DoubleClick (Google Ads), Google Ads Conversion + 14 more | Find emails |
| cdphp.com | #357,106 | AOS, ASP.NET, Adobe Fonts (Typekit) + 20 more | Find emails |
| cedex.es | #357,141 | Apache, Bootstrap, ConsentMo + 8 more | Find emails |
| agrocentar-volodja.rs | #357,387 | Bootstrap, Fancybox, Font Awesome + 9 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 →