CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9%). 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 |
|---|---|---|---|
| icehosting.nl | #108,965 | Apache, Font Awesome, PHP + 3 more | Find emails |
| sexymeet.tv | #108,972 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| radiomast.io | #108,977 | Amazon CloudFront, Atlassian Statuspage, Bootstrap + 13 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| steris.com | #108,997 | Adobe Experience Cloud (Launch), Amazon CloudFront, Azure DNS + 22 more | Find emails |
| vendoo.co | #109,013 | AWS Lambda, Cloudflare, Cloudflare Web Analytics + 18 more | Find emails |
| metalposters.com | #109,014 | Amazon (ACM), Amazon Route 53, Apache + 7 more | Find emails |
| meadd.com | #109,026 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 4 more | Find emails |
| yeptube.com | #109,036 | Cloudflare, Google Analytics, Let's Encrypt + 3 more | Find emails |
| vograce.com | #109,049 | Alibaba Cloud DNS, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| dnn4less.com | #109,065 | ASP.NET, Apache, Bootstrap + 7 more | Find emails |
| kadenze.com | #109,073 | Amazon (ACM), Amazon Route 53, Google Analytics + 14 more | Find emails |
| bjgp.org | #109,077 | Bluesky, Cloudflare, Cloudflare Bot Management + 14 more | Find emails |
| getfastr.com | #109,113 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| sting.com | #109,126 | Amazon Route 53, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| trendii.com | #109,128 | AWS Lambda, Azure DNS, Cloudflare edge/CDN + 10 more | Find emails |
| intef.es | #109,131 | Modernizr, Nginx, Owl Carousel + 7 more | Find emails |
| owu.edu | #109,132 | Adobe Fonts (Typekit), Apache, DigiCert + 8 more | Find emails |
| cokesbury.com | #109,139 | ASP.NET, DigiCert, Google Fonts + 3 more | Find emails |
| ukit.me | #109,145 | Bootstrap, CleanTalk, DDoS-Guard + 3 more | Find emails |
| avermedia.com | #109,150 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| docketalarm.com | #109,189 | Apache, Django, Font Awesome + 8 more | Find emails |
| seatelecom.ru | #109,214 | Bitrix, Let's Encrypt, Nginx + 2 more | Find emails |
| marketdataforecast.com | #109,223 | AOS, Bootstrap, Cloudflare + 10 more | Find emails |
| appalachiantrail.org | #109,248 | All in One SEO, Cloudflare, Cloudflare Bot Management + 16 more | Find emails |
| collarsandco.com | #109,268 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Google Ads Conversion + 14 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →