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 |
|---|---|---|---|
| sorellasthebrand.com | #73,519 | Cloudflare edge/CDN, ConsentMo, Google Cloud DNS + 9 more | Find emails |
| zapgames.io | #73,535 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| stockcenter.com.ar | #73,536 | Bootstrap, Cloudflare edge/CDN, Font Awesome + 16 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| cuckoldsporn.com | #73,537 | Fancybox, Google Analytics, Google Tag Manager + 3 more | Find emails |
| sirok.jp | #73,544 | Adobe Fonts (Typekit), Amazon (ACM), Amazon Route 53 + 5 more | Find emails |
| mundohentaioficial.com | #73,554 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| edready.org | #73,555 | AWS Lambda, Adobe Fonts (Typekit), Amazon Route 53 + 13 more | Find emails |
| bfi.co.id | #73,564 | AOS, AppsFlyer, Cloudflare + 18 more | Find emails |
| wakatime.com | #73,577 | Amazon Route 53, Google Fonts, Google Tag Manager + 7 more | Find emails |
| uscc.gov | #73,617 | Amazon Route 53, Apache, Bootstrap + 8 more | Find emails |
| langwill.com | #73,619 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 6 more | Find emails |
| csumb.edu | #73,668 | AdRoll, Amazon (ACM), Amazon CloudFront + 13 more | Find emails |
| biodigital.com | #73,678 | Amazon CloudFront, Cloudflare Bot Management, Cloudflare Turnstile + 12 more | Find emails |
| 2dfan.com | #73,682 | Alibaba Cloud CDN, Cloudflare, Cloudflare Turnstile + 8 more | Find emails |
| chpoking.ru | #73,703 | Let's Encrypt, Nginx, Yandex Metrica + 1 more | Find emails |
| littler.com | #73,707 | Adobe Fonts (Typekit), Azure DNS, ConsentMo + 7 more | Find emails |
| instantalks.com | #73,727 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| flow.cl | #73,729 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| youmetalks.com | #73,730 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| nonograms.org | #73,741 | Apache, Google Analytics, LiveInternet (Yadro) + 3 more | Find emails |
| undernavi.com | #73,742 | Amazon Route 53, Google Analytics, Google Hosted Libraries + 7 more | Find emails |
| ehoadon.vn | #73,746 | ASP.NET, Bootstrap, Cloudflare + 15 more | Find emails |
| iocdf.org | #73,767 | Adobe Fonts (Typekit), Cloudflare Bot Management, Cloudflare edge/CDN + 17 more | Find emails |
| gyft.com | #73,789 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 10 more | Find emails |
| br-analytics.ru | #73,791 | Google Analytics, Mail.ru Analytics (Top100), Moment.js + 7 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 →