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 |
|---|---|---|---|
| the-store.com | #112,993 | Cloudflare edge/CDN, Fancybox, Google Fonts + 7 more | Find emails |
| neighborhoodalerts.com | #113,001 | Amazon (ACM), Amazon Route 53, Envoy + 7 more | Find emails |
| hospitalityonline.com | #113,056 | Font Awesome, Google Analytics, Google Fonts + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| tierschutzbund.de | #113,067 | Apache, Let's Encrypt, Microsoft 365 + 2 more | Find emails |
| uaw.org | #113,069 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| goodstream.one | #113,070 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| engineersedge.com | #113,076 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| isaps.org | #113,081 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 4 more | Find emails |
| mhs.com | #113,096 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 24 more | Find emails |
| cyberia.net.lb | #113,114 | Bootstrap, DigiCert, Font Awesome + 14 more | Find emails |
| selfdeterminationtheory.org | #113,115 | Bootstrap, Cloudflare, Cloudflare Bot Management + 14 more | Find emails |
| center.cruises | #113,120 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 14 more | Find emails |
| trusselltrust.org | #113,130 | Alibaba Cloud CDN, Civic Cookie Control, Cloudflare + 7 more | Find emails |
| finditparts.com | #113,132 | Amazon Pay, Amazon Route 53, Bugsnag + 12 more | Find emails |
| investegate.co.uk | #113,139 | Amazon (ACM), Amazon Route 53, Bootstrap + 12 more | Find emails |
| bremerhaven.de | #113,160 | Apache, Let's Encrypt, Matomo + 2 more | Find emails |
| hbportal.co | #113,208 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| dynamixhost.com | #113,223 | Apache, Bootstrap, Font Awesome + 9 more | Find emails |
| aelfriceden.com | #113,243 | ClickTale (Contentsquare), Cloudflare edge/CDN, DigitalOcean Spaces + 11 more | Find emails |
| design911.com | #113,251 | ASP.NET, Bootstrap, Cloudflare + 15 more | Find emails |
| tecnospeed.com.br | #113,263 | Amazon Route 53, DoubleClick (Google Ads), Google AdSense + 19 more | Find emails |
| ritual.com | #113,277 | Adobe Fonts (Typekit), Amplitude, Cloudflare edge/CDN + 9 more | Find emails |
| sunwire.ca | #113,287 | AOS, Apache, Font Awesome + 10 more | Find emails |
| vayama.com | #113,315 | Akamai Edge DNS, Cloudflare Web Analytics, DigiCert + 6 more | Find emails |
| easterndns.com | #113,318 | ASP.NET, Google Analytics, Google Fonts + 5 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 →