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 |
|---|---|---|---|
| kuantokusta.pt | #47,585 | Akamai edge/CDN, DigiCert | Find emails |
| sayintentions.ai | #47,603 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| arezzo.com.br | #47,640 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 9 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| babelcube.com |
| #47,645 |
| Blogger, Bootstrap, Cloudflare + 11 more |
| Find emails |
| gamstop.co.uk | #47,657 | Amazon (ACM), Amazon CloudFront, Cloudflare + 9 more | Find emails |
| youngla.com | #47,679 | Attentive, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| bigoven.com | #47,682 | ASP.NET, Azure API Management, Cloudinary + 13 more | Find emails |
| clicksign.com | #47,686 | AWS Lambda, AWS WAF, Amazon CloudFront + 23 more | Find emails |
| netuse.de | #47,712 | Akamai Edge DNS, Apache, ConsentMo + 7 more | Find emails |
| aemps.es | #47,736 | Font Awesome, Google Hosted Libraries, Google Tag Manager + 5 more | Find emails |
| ljmu.ac.uk | #47,742 | ASP.NET, Bluesky, Font Awesome + 8 more | Find emails |
| pegi.info | #47,749 | Bootstrap, Drupal, Google Analytics + 5 more | Find emails |
| intellinews.com | #47,761 | Amazon Route 53, Cloudflare edge/CDN, Google AdSense + 6 more | Find emails |
| amillionads.com | #47,766 | Amazon Route 53, Bootstrap, Cloudflare Bot Management + 19 more | Find emails |
| double11.com | #47,768 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| pixpa.com | #47,782 | AWS WAF, Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| tuev-media.de | #47,810 | Apache, Let's Encrypt, Matomo + 1 more | Find emails |
| dune-hd.com | #47,811 | Cloudflare edge/CDN, Fancybox, Google Ads Conversion + 15 more | Find emails |
| smo.lt | #47,814 | Cloudflare edge/CDN, Let's Encrypt, Microsoft Clarity + 3 more | Find emails |
| gardeners.com | #47,859 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Convert + 11 more | Find emails |
| athensvoice.gr | #47,861 | Google Tag Manager, Let's Encrypt, OneSignal + 1 more | Find emails |
| pdf-xchange.com | #47,865 | Google Fonts, Nginx, Sectigo + 3 more | Find emails |
| effiliation.com | #47,901 | Google Cloud DNS, Google Trust Services, Gravatar + 3 more | Find emails |
| met.ie | #47,907 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| anibookmark.com | #47,911 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 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 →