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 |
|---|---|---|---|
| dzone.com | #10,446 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| misli.az | #10,466 | Amazon Route 53, Google Analytics, Google Tag Manager + 5 more | Find emails |
| dianomi.com | #10,510 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| groovinads.com | #10,522 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| finya.de | #10,545 | Cloudflare, Cloudflare edge/CDN, Google Hosted Libraries + 6 more | Find emails |
| enabiz.gov.tr | #10,554 | ASP.NET, Bootstrap, Font Awesome + 4 more | Find emails |
| juicyads.com | #10,559 | AddThis, Amazon CloudFront, Amazon Route 53 + 21 more | Find emails |
| uptodate.com | #10,575 | DigiCert, Microsoft 365, OneTrust + 1 more | Find emails |
| hdfilmcehennemi.now | #10,593 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| trafficjunky.com | #10,594 | Amazon Route 53, Bootstrap, Font Awesome + 15 more | Find emails |
| thediplomat.com | #10,598 | Bluesky, Cloudflare, Cloudflare Turnstile + 8 more | Find emails |
| trackjs.com | #10,624 | ASP.NET, Amazon CloudFront, Atlassian Cloud + 18 more | Find emails |
| circleci.com | #10,628 | 6sense, Algolia, Amazon (ACM) + 34 more | Find emails |
| gamblingcommission.gov.uk | #10,646 | Azure API Management, Contentful, Font Awesome + 4 more | Find emails |
| stay22.com | #10,648 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 18 more | Find emails |
| cookie-script.com | #10,706 | Bootstrap, Font Awesome, Google Analytics + 15 more | Find emails |
| diplo.de | #10,722 | Google Maps, Meta Pixel, Twitter/X Widgets + 3 more | Find emails |
| tcl.com | #10,734 | Bazaarvoice, Cloudflare edge/CDN, DoubleClick (Google Ads) + 6 more | Find emails |
| authorize.net | #10,744 | Akamai Edge DNS, ClickTale (Contentsquare), Cloudflare + 11 more | Find emails |
| e-monsite.com | #10,746 | Ahrefs Analytics, Bootstrap, Cloudflare + 12 more | Find emails |
| hnb.lk | #10,749 | DigiCert, Google Analytics, Google Tag Manager + 2 more | Find emails |
| forth.gr | #10,752 | Apache, Font Awesome, Google Analytics + 4 more | Find emails |
| researchandmarkets.com | #10,766 | Amazon Route 53, Azure API Management, Fastly + 3 more | Find emails |
| idrive.com | #10,772 | Amazon Route 53, ClickTale (Contentsquare), Cloudflare edge/CDN + 15 more | Find emails |
| getbeamer.com | #10,777 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 13 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 →