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 |
|---|---|---|---|
| wm.com | #14,558 | Amazon CloudFront, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| nationbuilder.com | #14,565 | Adobe Fonts (Typekit), Amazon CloudFront, Atlassian Cloud + 21 more | Find emails |
| neowin.net | #14,570 | Amazon Advertising, Awin, Blockthrough + 20 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| pantheon.io | #14,582 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 17 more | Find emails |
| mikmak.ai | #14,594 | AOS, Amazon CloudFront, Amazon Route 53 + 20 more | Find emails |
| prusa3d.com | #14,610 | Cloudflare, Cloudflare edge/CDN, CookieYes + 9 more | Find emails |
| loft.com | #14,617 | Adobe Experience Cloud (Launch), Bread Financial (Comenity), CSC (Digital Brand Services) + 9 more | Find emails |
| sika.com | #14,619 | Cloudflare Web Analytics, Cloudflare edge/CDN, Fastly + 7 more | Find emails |
| art.pl | #14,633 | Let's Encrypt, Nginx, PHP + 3 more | Find emails |
| urban.org | #14,640 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 12 more | Find emails |
| rockpapershotgun.com | #14,657 | Amazon Advertising, Bluesky, Chartbeat + 10 more | Find emails |
| notamedia.ru | #14,676 | Bitrix, Google Hosted Libraries, Google Maps + 10 more | Find emails |
| cervantes.es | #14,746 | Adyen, Apache, Bootstrap + 18 more | Find emails |
| shinyapps.io | #14,748 | Amazon (ACM), Amazon Route 53, Bootstrap + 6 more | Find emails |
| ms.gov | #14,767 | ASP.NET, Akamai Edge DNS, Azure API Management + 14 more | Find emails |
| easemytrip.com | #14,771 | ASP.NET, AngularJS, Google Cloud DNS + 11 more | Find emails |
| cloudimg.io | #14,792 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 10 more | Find emails |
| cbn.com | #14,804 | Adobe Fonts (Typekit), Akamai Edge DNS, Akamai edge/CDN + 10 more | Find emails |
| bea.gov | #14,846 | ASP.NET, Azure Front Door, Bootstrap + 14 more | Find emails |
| podomatic.com | #14,862 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| tapas.io | #14,870 | Amazon (ACM), Amazon Advertising, Amazon Route 53 + 16 more | Find emails |
| nsa.gov | #14,891 | AOS, ASP.NET, Akamai Edge DNS + 10 more | Find emails |
| costcotravel.com | #14,900 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai Edge DNS + 8 more | Find emails |
| healthdirect.gov.au | #14,906 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| statestreet.com | #14,916 | Adobe Experience Cloud (Launch), Akamai edge/CDN, Akamai mPulse + 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 →