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 |
|---|---|---|---|
| portronics.com | #79,752 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| wyomingnews.com | #79,762 | Blockthrough, Cloudflare edge/CDN, Google Fonts + 9 more | Find emails |
| blackpoolgazette.co.uk | #79,783 | Cloudflare Bot Management, Cloudflare edge/CDN, Dotmetrics + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| like4like.org | #79,789 | AOS, Bootstrap, Cloudflare + 8 more | Find emails |
| makeship.com | #79,823 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 10 more | Find emails |
| eurovps.com | #79,866 | Fancybox, Google Tag Manager, Nginx + 4 more | Find emails |
| pornovore.fr | #79,883 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 5 more | Find emails |
| myevent.com | #79,891 | Google Analytics, Google Tag Manager, Let's Encrypt + 3 more | Find emails |
| fortimailcloud.com | #79,943 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 7 more | Find emails |
| m3aarf.com | #79,976 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 16 more | Find emails |
| ahead-nutrition.com | #79,979 | Cloudflare edge/CDN, Cookiebot, GoAffPro + 9 more | Find emails |
| tavex.bg | #79,986 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| ipicture.ru | #79,990 | Apache, DataLife Engine, Google Hosted Libraries + 6 more | Find emails |
| postnet.co.za | #80,001 | Apache, Bootstrap, Font Awesome + 12 more | Find emails |
| girlfriendgalleries.net | #80,011 | DigiCert, Google Analytics, Google Fonts + 4 more | Find emails |
| gametop.com | #80,023 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| foulabook.com | #80,031 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| kingopinion.com | #80,043 | Amazon (ACM), Amazon Route 53, FlagCDN + 12 more | Find emails |
| clius.jp | #80,049 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| ifsul.edu.br | #80,053 | Apache, Bootstrap, Font Awesome + 3 more | Find emails |
| kaft.com | #80,055 | Amazon (ACM), Amazon Route 53, Apache + 8 more | Find emails |
| neothek.com | #80,059 | All in One SEO, Bootstrap, Cloudflare edge/CDN + 19 more | Find emails |
| mercatopoli.it | #80,070 | Adobe Fonts (Typekit), Cookie-Script, Google Analytics + 12 more | Find emails |
| 100ms.live | #80,072 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 12 more | Find emails |
| gioseppo.com | #80,077 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Conviva + 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 →