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.
| # | 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 |
|---|---|---|---|
| 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 |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | 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 |
| shopinchicago.com | #109,291 | ASP.NET, Google AdSense, Google Analytics + 1 more | Find emails |
| infonu.nl | #109,310 | Consentmanager.net, Fastmail, Google Analytics + 6 more | Find emails |
| digitalrevolution.nl | #109,312 | Apache, Google Ads Conversion, Google Analytics + 8 more | Find emails |
| feig-partner.de | #109,321 | Adobe Fonts (Typekit), Amazon Route 53, Apache + 7 more | Find emails |
| optiontradingspeak.com | #109,323 | All in One SEO, Apache, DoubleClick (Google Ads) + 10 more | Find emails |
| ufibox.com | #109,334 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 5 more | Find emails |
| clubcent.com | #109,349 | ASP.NET, Adobe Fonts (Typekit), Cloudflare edge/CDN + 10 more | Find emails |
| cbdfx.com | #109,350 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 8 more | Find emails |
| beurer.com | #109,372 | Azure DNS, Cloudflare edge/CDN, Google Analytics + 15 more | Find emails |
| kathimerini.com.cy | #109,373 | Bootstrap, Cookie-Script, Fancybox + 12 more | Find emails |
| plainsite.org | #109,375 | Apache, Font Awesome, Google Analytics + 6 more | Find emails |
| ironhidegames.com | #109,378 | ASP.NET, Azure API Management, Bootstrap + 9 more | Find emails |
| selectblinds.com | #109,381 | Cloudflare, Cloudflare edge/CDN, Datadog + 8 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →