CAPTCHA & Bot Protection
56,649 of the 965,200 top sites in our Tranco top-1M census run reCAPTCHA (5.9%). 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 | one.one | #160 (Tranco) | Find emails |
| 2 | pki.goog | #218 (Tranco) | Find emails |
| 3 | t-online.de | #220 (Tranco) | Find emails |
| 4 | dnsmadeeasy.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| phaidon.com | #32,551 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| webmarked.net | #32,559 | Bootstrap, Font Awesome, Google Fonts + 5 more | Find emails |
| atmosphere.tv | #32,573 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| nwitimes.com | #32,575 | Amazon Advertising, Font Awesome, Google AdSense + 15 more | Find emails |
| saicloud.com | #32,579 | Amazon (ACM), Amazon Route 53, Font Awesome + 5 more | Find emails |
| direct-credit.ru | #32,625 | AngularJS, PHP, jQuery | Find emails |
| channel3000.com | #32,719 | Amazon Route 53, Google Fonts, Google Publisher Tag + 5 more | Find emails |
| gruposbf.com.br | #32,730 | Akamai Edge DNS, Google Analytics, Google Tag Manager + 10 more | Find emails |
| lancasteronline.com | #32,742 | Cloudflare, CrazyEgg, Google Fonts + 6 more | Find emails |
| streetsblog.org | #32,744 | Cloudflare, Google Analytics, Google Tag Manager + 6 more | Find emails |
| chilis.com | #32,757 | Google Cloud DNS, Google Tag Manager, Google Trust Services + 4 more | Find emails |
| chat2desk.com | #32,799 | Cloudflare, DigiCert, Google Tag Manager + 3 more | Find emails |
| freeforums.net | #32,810 | Envoy, Fastly, Google Cloud DNS + 4 more | Find emails |
| pcrichard.com | #32,821 | Amazon Route 53, Cloudflare edge/CDN, DigiCert + 8 more | Find emails |
| thetravel.com | #32,826 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| thepeninsulaqatar.com | #32,842 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| fazenda.sp.gov.br | #32,856 | ASP.NET, Bootstrap, Font Awesome + 11 more | Find emails |
| sfweekly.com | #32,929 | Cloudflare, Google Analytics, Google Fonts + 7 more | Find emails |
| autocrm.ru | #32,935 | Google Fonts, Nginx, Ruby on Rails + 1 more | Find emails |
| millenniumhotels.com | #32,989 | ASP.NET, Amazon Route 53, Cloudflare Bot Management + 8 more | Find emails |
| saucony.com | #33,095 | Amazon Route 53, Cloudflare edge/CDN, Let's Encrypt + 7 more | Find emails |
| seti.org | #33,161 | Cloudflare, Cloudflare edge/CDN, CookieYes + 10 more | Find emails |
| chita.ru | #33,228 | DDoS-Guard, Let's Encrypt | Find emails |
| rsi.ch | #33,295 | Amazon Route 53, DigiCert, Microsoft 365 + 5 more | Find emails |
| gardena.com | #33,317 | Amazon Advertising, CSC (Digital Brand Services), Cloudflare edge/CDN + 17 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 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →