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 |
|---|---|---|---|
| tangiblee.com | #40,242 | Cloudflare edge/CDN, Google Analytics, Google Fonts + 4 more | Find emails |
| zumvu.com | #40,275 | Font Awesome, Google Analytics, Google Fonts + 6 more | Find emails |
| daveandbusters.com | #40,283 | AOS, Adobe Experience Cloud (Launch), Cloudflare + 11 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| delhaize.be | #40,316 | Adobe Experience Cloud (Launch), Akamai Bot Manager, CSC (Digital Brand Services) + 10 more | Find emails |
| party.biz | #40,350 | Bootstrap, Font Awesome, Google AdSense + 8 more | Find emails |
| theordinary.com | #40,356 | Bazaarvoice, Bootstrap, Cloudflare edge/CDN + 8 more | Find emails |
| dnainfo.com | #40,358 | Google Analytics, Google Publisher Tag, Google Tag Manager + 9 more | Find emails |
| radiocut.fm | #40,418 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| superpal.com | #40,434 | Adobe Audience Manager, Amazon Advertising, Arkose Labs + 24 more | Find emails |
| asmhentai.com | #40,442 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| petlibro.com | #40,456 | Cloudflare edge/CDN, Let's Encrypt, Microsoft Advertising (Bing UET) + 7 more | Find emails |
| araujo.com.br | #40,464 | Akamai Bot Manager, Akamai Edge DNS, Akamai mPulse + 18 more | Find emails |
| ops.co | #40,483 | Google Analytics, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| rocketmoney.com | #40,542 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| vikingcloud.com | #40,546 | Amazon Route 53, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| boxlunch.com | #40,566 | Bloomreach, Cloudflare edge/CDN, DigiCert + 3 more | Find emails |
| newsfilecorp.com | #40,572 | Amazon (ACM), Bootstrap, Font Awesome + 6 more | Find emails |
| francophonie.org | #40,606 | Drupal, Google Analytics, Google Tag Manager + 7 more | Find emails |
| soccer.ru | #40,626 | Let's Encrypt, Nginx, reCAPTCHA v3 | Find emails |
| sharp.com | #40,629 | Amazon (ACM), Amazon CloudFront, Contentful + 5 more | Find emails |
| manufrog.com | #40,633 | Bootstrap, Font Awesome, Google Fonts + 6 more | Find emails |
| americangreetings.com | #40,660 | Akamai mPulse, Amazon Route 53, Brightcove + 7 more | Find emails |
| gl-inet.com | #40,699 | Cloudflare, Cloudflare edge/CDN, CrazyEgg + 10 more | Find emails |
| fantlab.ru | #40,778 | Bootstrap, Fancybox, Let's Encrypt + 3 more | Find emails |
| fmgsuite.com | #40,800 | Amazon Route 53, Cloudflare edge/CDN, CrazyEgg + 10 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 →