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 |
|---|---|---|---|
| gamesindustry.biz | #15,411 | Amazon Advertising, Chartbeat, Confiant + 9 more | Find emails |
| estrepublicain.fr | #15,438 | AT Internet, ConsentMo, Didomi + 2 more | Find emails |
| getcontact.com | #15,462 | Amazon Route 53, Google Tag Manager, Google Trust Services + 5 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| learnosity.com | #15,531 | 6sense, Amazon CloudFront, Amazon Route 53 + 22 more | Find emails |
| safaricom.co.ke | #15,554 | Amazon CloudFront, Bootstrap, DigiCert + 17 more | Find emails |
| groups.io | #15,601 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 10 more | Find emails |
| podio.com | #15,644 | AdRoll, Amazon (ACM), Amazon CloudFront + 13 more | Find emails |
| udg.mx | #15,653 | Bootstrap, DigiCert, Drupal + 11 more | Find emails |
| movieweb.com | #15,666 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| audioboom.com | #15,683 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 11 more | Find emails |
| luxerone.com | #15,689 | Amazon Route 53, DoubleClick (Google Ads), Font Awesome + 21 more | Find emails |
| adsinteractive.com | #15,700 | Cloudflare, Gravatar, InMobi + 5 more | Find emails |
| ozbargain.com.au | #15,724 | Cloudflare, Cloudflare edge/CDN, Google Identity Services + 8 more | Find emails |
| exist.ru | #15,767 | ASP.NET, Fancybox, Nginx + 5 more | Find emails |
| rijksmuseum.nl | #15,771 | ASP.NET, Azure API Management, Azure Front Door + 7 more | Find emails |
| dailysabah.com | #15,783 | AOS, Amazon CloudFront, Amazon Route 53 + 15 more | Find emails |
| pagerduty.com | #15,855 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 20 more | Find emails |
| oaic.gov.au | #15,883 | Chart.js, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| fastercapital.com | #15,893 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| ticksy.com | #15,898 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 10 more | Find emails |
| buffalonews.com | #15,910 | 33Across, Advertising.com, Amazon Advertising + 40 more | Find emails |
| walkscore.com | #15,999 | Amazon (ACM), Amazon Route 53, Apache + 7 more | Find emails |
| cloudamqp.com | #16,018 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| valvesoftware.com | #16,073 | Akamai Edge DNS, Let's Encrypt, Nginx + 2 more | Find emails |
| yes24.com | #16,080 | ASP.NET, DigiCert, Google Tag Manager + 2 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 →