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 |
|---|---|---|---|
| zenmate.com | #76,951 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| examveda.com | #76,958 | Apache, Bootstrap, Font Awesome + 13 more | Find emails |
| budgetair.com | #76,971 | Akamai Edge DNS, Cloudflare Web Analytics, DigiCert + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| dumazahrada.cz | #76,973 | Cloudflare, Cloudflare edge/CDN, Didomi + 9 more | Find emails |
| spectrio.com | #76,977 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 18 more | Find emails |
| conova.at | #77,005 | Apache, Google Hosted Libraries, HubSpot + 7 more | Find emails |
| oprf.ru | #77,007 | Laravel, Nginx, PHP | Find emails |
| radioplayer.org | #77,017 | Amazon CloudFront, Amazon S3, Cloudflare + 12 more | Find emails |
| mydays.de | #77,024 | Amazon CloudFront, Amazon Route 53, Cloudflare edge/CDN + 8 more | Find emails |
| thewebcomiclist.com | #77,030 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| nhentaiyaoi.net | #77,035 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| aldat.online | #77,036 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| videnov.bg | #77,038 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 17 more | Find emails |
| aptivada.com | #77,040 | AWS Lambda, Amazon Route 53, Bootstrap + 15 more | Find emails |
| monta.app | #77,066 | Adobe Fonts, Adobe Fonts (Typekit), Amazon CloudFront + 15 more | Find emails |
| klimovsk.net | #77,069 | Bootstrap, Font Awesome, Joomla + 5 more | Find emails |
| weidezaun.info | #77,073 | ASP.NET, Consentmanager.net, Doofinder + 9 more | Find emails |
| cloudlift.app | #77,083 | Cloudflare edge/CDN, Google Cloud DNS, Let's Encrypt + 3 more | Find emails |
| tikvib.com | #77,089 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 12 more | Find emails |
| menicka.cz | #77,118 | Apache, DigiCert, DoubleClick (Google Ads) + 17 more | Find emails |
| androidloading.com | #77,129 | Cloudflare Turnstile, DDoS-Guard, Font Awesome + 6 more | Find emails |
| faxage.com | #77,139 | Bootstrap, DigiCert, Font Awesome + 5 more | Find emails |
| wiara.pl | #77,166 | Gemius, Google Analytics, Google Fonts + 4 more | Find emails |
| cabaia.fr | #77,171 | Cloudflare edge/CDN, Google Fonts, Google Trust Services + 6 more | Find emails |
| odessa.tv | #77,184 | Cloudflare edge/CDN, Fancybox, Google Analytics + 9 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 →