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 |
|---|---|---|---|
| lyricsondemand.com | #49,685 | AddToAny, Bootstrap, Cloudflare + 7 more | Find emails |
| dollskill.com | #49,697 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 18 more | Find emails |
| topcor.ru | #49,698 | Cloudflare, DDoS-Guard, DataLife Engine + 9 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| christiantoday.com | #49,717 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| uen.net | #49,725 | AddThis, Apache, Fancybox + 5 more | Find emails |
| swizzonic.ch | #49,734 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 15 more | Find emails |
| biomerieux.com | #49,735 | Adobe Advertising Cloud, Adobe Analytics, Adobe Audience Manager + 27 more | Find emails |
| socialcatfish.com | #49,737 | Braintree, Chart.js, Cloudflare + 13 more | Find emails |
| crocoblock.com | #49,744 | Cloudflare, Cloudflare edge/CDN, Disqus + 10 more | Find emails |
| ihor-hosting.ru | #49,760 | All in One SEO, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| newstat.monster | #49,775 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| uksportsinstitute.co.uk | #49,785 | Fastly, Google Analytics, Google Fonts + 8 more | Find emails |
| phenixrts.com | #49,790 | AWS Lambda, Amazon CloudFront, Amazon Route 53 + 18 more | Find emails |
| getscreen.ru | #49,811 | GetSiteControl, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| trinidadexpress.com | #49,815 | Cloudflare, DoubleClick (Google Ads), Google Fonts + 7 more | Find emails |
| magnolia.com | #49,827 | Algolia, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| svbtlestage.com | #49,832 | Amazon Route 53, Google Analytics, Google Tag Manager + 4 more | Find emails |
| xxxbunker.com | #49,847 | Cloudflare, Google Fonts, Google Hosted Libraries + 5 more | Find emails |
| swipedon.com | #49,854 | Adobe Fonts (Typekit), Amazon CloudFront, Amazon Route 53 + 17 more | Find emails |
| mealtrain.com | #49,883 | ASP.NET, Bootstrap, Convert + 9 more | Find emails |
| well.ca | #49,889 | Google AdSense, Google Analytics, Google Optimize + 6 more | Find emails |
| exchangerates.org.uk | #49,892 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| bnamericas.com | #49,894 | Amazon (ACM), Amazon Route 53, DoubleClick (Google Ads) + 6 more | Find emails |
| wbrz.com | #49,907 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| gtainside.com | #49,930 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 12 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →