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.
Other captcha & bot protection
| # | 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 |
|---|---|---|---|
| yakimaherald.com | #82,735 | DoubleClick (Google Ads), Google Cloud DNS, Google Fonts + 8 more | Find emails |
| trmanga.com | #82,741 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 14 more | Find emails |
| vcuhealth.org | #82,743 | AddThis, Amazon CloudFront, Amazon Route 53 + 22 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| koaa.com | #82,785 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 14 more | Find emails |
| birkenstock.in | #82,788 | Cloudflare edge/CDN, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| skyblock.net | #82,790 | AOS, Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
| aosom.ro | #82,810 | Akamai edge/CDN, Akamai mPulse, Amazon Route 53 + 5 more | Find emails |
| testportal.pl | #82,826 | Azure DNS, Azure Front Door, Chart.js + 11 more | Find emails |
| thecompanystore.com | #82,833 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai Edge DNS + 11 more | Find emails |
| thethings.com | #82,840 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| fallcoweb.it | #82,841 | Cloudflare, Cloudflare Turnstile, DigiCert + 1 more | Find emails |
| asp.events | #82,842 | Amazon (ACM), Amazon Route 53, GSAP + 8 more | Find emails |
| loandepot.com | #82,844 | Akamai Edge DNS, Azure Front Door, DigiCert + 6 more | Find emails |
| ateliertrottinette.ch | #82,845 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 2 more | Find emails |
| pall.com | #82,846 | Adobe Fonts (Typekit), Amazon Route 53, Apache + 12 more | Find emails |
| dynamic.domains | #82,847 | ASP.NET, Bootstrap, Google Analytics + 5 more | Find emails |
| mathewsons.co.uk | #82,849 | ASP.NET, Google Analytics, Google Fonts + 8 more | Find emails |
| animesuperhero.com | #82,852 | AddToAny, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| elcomsoft.com | #82,855 | Bootstrap, Google Analytics, Google Tag Manager + 6 more | Find emails |
| glassix.com | #82,860 | AWS Lambda, Amazon CloudFront, Atlassian Cloud + 20 more | Find emails |
| hhchealth.org | #82,862 | Adobe Fonts (Typekit), DigiCert, Font Awesome + 8 more | Find emails |
| 1cs.jp | #82,870 | All in One SEO, Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| iepwriter.com | #82,887 | ASP.NET, Cloudflare, DigiCert + 7 more | Find emails |
| sonxeber.az | #82,916 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| oulfa.fr | #82,919 | All in One SEO, Apache, Font Awesome + 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 →