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 |
|---|---|---|---|
| reitmans.com | #55,748 | Cloudflare edge/CDN, ConsentMo, Let's Encrypt + 5 more | Find emails |
| strauss.com | #55,751 | Cloudflare edge/CDN, Let's Encrypt, Preact + 3 more | Find emails |
| evanscycles.com | #55,757 | ASP.NET, Akamai Bot Manager, Akamai Edge DNS + 12 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| startupxplore.com | #55,762 | AOS, Algolia, Apache + 24 more | Find emails |
| carnival.com.bd | #55,779 | Cloudflare, Google Fonts, Google Tag Manager + 7 more | Find emails |
| sparklit.com | #55,792 | Bootstrap, DoubleClick (Google Ads), Font Awesome + 6 more | Find emails |
| pk.edu.pl | #55,807 | Bootstrap, Google Analytics, Google Fonts + 5 more | Find emails |
| maxi.rs | #55,825 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai edge/CDN + 7 more | Find emails |
| windcave.com | #55,844 | ASP.NET, Amazon CloudFront, Bootstrap + 9 more | Find emails |
| astrosurf.com | #55,861 | Apache, Google Fonts, reCAPTCHA v2 | Find emails |
| satq.tv | #55,883 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| mynextmove.org | #55,890 | Bootstrap, Font Awesome, Nginx + 3 more | Find emails |
| news-gazette.com | #55,900 | Amazon Route 53, DoubleClick (Google Ads), Font Awesome + 10 more | Find emails |
| avn.com | #55,901 | Amazon CloudFront, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| df.eu | #55,907 | Amazon CloudFront, Atlassian Cloud, Google Analytics + 9 more | Find emails |
| usc.edu.au | #55,917 | ASP.NET, Azure API Management, Cloudflare + 9 more | Find emails |
| gazeteoksijen.com | #55,919 | Bluesky, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| simplebooklet.com | #55,925 | Apache, Crisp, Google Hosted Libraries + 9 more | Find emails |
| adseleto.com | #55,935 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 10 more | Find emails |
| penningtons.com | #55,955 | Cloudflare edge/CDN, ConsentMo, Let's Encrypt + 5 more | Find emails |
| mybiosource.com | #55,957 | AdRoll, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| simplicity.com | #55,967 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| evereve.com | #55,971 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 12 more | Find emails |
| fantrax.com | #55,976 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 5 more | Find emails |
| tcinet.ru | #55,979 | Bitrix, PHP, Yandex Metrica + 1 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 →