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 |
|---|---|---|---|
| wunschgutschein.de | #70,696 | Cloudflare edge/CDN, CookieFirst, Google Tag Manager + 5 more | Find emails |
| northflank.com | #70,700 | Cal.com, Envoy, Express + 13 more | Find emails |
| gunpost.ca | #70,701 | AddToAny, Cloudflare, Cloudflare Bot Management + 15 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| deltacommerce.com | #70,706 | Apache, Bootstrap, Google Ads Conversion + 16 more | Find emails |
| itexamanswers.net | #70,708 | Cloudflare, Cloudflare edge/CDN, Flying Press + 8 more | Find emails |
| thedailywtf.com | #70,714 | ASP.NET, AddToAny, Cloudflare + 8 more | Find emails |
| pothys.com | #70,720 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 8 more | Find emails |
| islamveihsan.com | #70,723 | Bootstrap, Cloudflare, Font Awesome + 11 more | Find emails |
| myheritage.nl | #70,724 | Amazon CloudFront, Apache, ConsentMo + 5 more | Find emails |
| acdsystems.com | #70,739 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| zipgrade.com | #70,740 | Amazon (ACM), Amazon Route 53, Bootstrap + 8 more | Find emails |
| joinsuperset.com | #70,741 | AdRoll, Amazon Route 53, Font Awesome + 19 more | Find emails |
| perodua.com.my | #70,749 | Adform, Apache, DoubleClick (Google Ads) + 14 more | Find emails |
| aspistrategist.org.au | #70,750 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| primecursos.com.br | #70,751 | Cloudflare, Cloudflare edge/CDN, DMCA.com Protection + 8 more | Find emails |
| noroutetohost.net | #70,754 | Apache, Google AdSense, Google Analytics + 6 more | Find emails |
| mangatv.net | #70,789 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| abctelefonos.com | #70,793 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 4 more | Find emails |
| guerrillamail.com | #70,801 | Cloudflare, Google AdSense, Google Analytics + 7 more | Find emails |
| u-cursos.cl | #70,803 | Google Analytics, Google Tag Manager, PHP + 4 more | Find emails |
| ohioattorneygeneral.gov | #70,814 | ASP.NET, Google Analytics, Google Maps + 6 more | Find emails |
| viridianglass.com | #70,819 | AOS, Adobe Fonts (Typekit), Cloudflare + 15 more | Find emails |
| 5starstudents.com | #70,824 | ASP.NET, Adobe Experience Cloud (Launch), Amazon Route 53 + 12 more | Find emails |
| cuprum.cl | #70,825 | ASP.NET, AddToAny, Amazon (ACM) + 11 more | Find emails |
| walmart.co.cr | #70,848 | Amazon CloudFront, DoubleClick (Google Ads), Google Publisher Tag + 6 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 →