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 |
|---|---|---|---|
| silkroad.com | #65,553 | Adyen, Amazon Route 53, Brightcove + 18 more | Find emails |
| fundacionmapfre.org | #65,577 | Akamai Edge DNS, Akamai edge/CDN, DigiCert + 9 more | Find emails |
| dataline.ua | #65,584 | Apache, Google Ads Conversion, Google Analytics + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| sinyi.com.tw | #65,607 | Amazon Route 53, Bootstrap, Citrix NetScaler + 5 more | Find emails |
| myhost.ro | #65,617 | Bootstrap, Cloudflare edge/CDN, Elfsight + 8 more | Find emails |
| jbhunt.com | #65,620 | Adobe Experience Manager Edge Delivery (Helix RUM), Adobe Fonts (Typekit), Azure DNS + 14 more | Find emails |
| tiendanimal.es | #65,624 | Amazon CloudFront, Amazon Route 53, Cloudflare edge/CDN + 11 more | Find emails |
| sabis.net | #65,650 | ASP.NET, Azure API Management, Cloudflare Turnstile + 11 more | Find emails |
| casabatllo.es | #65,662 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| proxi.nl | #65,669 | Apache, Google Analytics, Google Tag Manager + 6 more | Find emails |
| javbangers.com | #65,677 | Bootstrap, Fancybox, Font Awesome + 6 more | Find emails |
| mandalascrubs.com | #65,707 | Cloudflare edge/CDN, Global-e, Judge.me + 8 more | Find emails |
| shelly.com | #65,711 | Cloudflare edge/CDN, Global-e, Google Cloud DNS + 11 more | Find emails |
| portseattle.org | #65,713 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| wp-events-plugin.com | #65,715 | AOS, Bootstrap, Font Awesome + 9 more | Find emails |
| teile.com | #65,727 | Bootstrap, Cloudflare, Cloudflare Turnstile + 10 more | Find emails |
| myfutanari.com | #65,729 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| hwinfo.com | #65,733 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| wso2.com | #65,749 | Azure Front Door, Bootstrap, Cloudflare + 8 more | Find emails |
| dating.ru | #65,761 | Google Fonts, Let's Encrypt, Nginx + 2 more | Find emails |
| dainese.com | #65,763 | Bootstrap, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| umbraco.com | #65,766 | ASP.NET, Cloudflare, Cloudflare Bot Management + 13 more | Find emails |
| nintendoworldreport.com | #65,785 | AddThis, Bluesky, Cloudflare + 12 more | Find emails |
| euroland.com | #65,786 | Azure DNS, Bootstrap, Font Awesome + 2 more | Find emails |
| sybell.hu | #65,803 | Fancybox, Font Awesome, Google Analytics + 16 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →