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 |
|---|---|---|---|
| hotcars.com | #34,574 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| kraftheinz.com | #34,584 | Adobe Fonts (Typekit), CSC (Digital Brand Services), Cloudinary + 6 more | Find emails |
| ascendoor.com | #34,614 | Google Analytics, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| iberdrola.es | #34,621 | Akamai Bot Manager, Akamai mPulse, Bootstrap + 12 more | Find emails |
| mab.co.id | #34,628 | Adobe Fonts (Typekit), Envoy, Fancybox + 4 more | Find emails |
| flashforge.com | #34,630 | Cloudflare edge/CDN, Fancybox, Font Awesome + 10 more | Find emails |
| wma.net | #34,635 | Let's Encrypt, Microsoft 365, Nginx + 3 more | Find emails |
| chemistryworld.com | #34,642 | Amazon (ACM), Amazon Route 53, Google AdSense + 8 more | Find emails |
| sussexexpress.co.uk | #34,679 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Cloud DNS + 5 more | Find emails |
| aldoshoes.com | #34,693 | Amazon Route 53, Bloomreach, Cloudflare edge/CDN + 7 more | Find emails |
| bkdns.vn | #34,714 | Bootstrap, DigiCert, Font Awesome + 3 more | Find emails |
| lta.org.uk | #34,721 | Adobe Fonts (Typekit), Azure DNS, Cloudflare edge/CDN + 5 more | Find emails |
| netto-online.de | #34,731 | Akamai Bot Manager, Akamai Edge DNS, Akamai mPulse + 4 more | Find emails |
| 2captcha.com | #34,746 | Arkose Labs, Cloudflare, Cloudflare edge/CDN + 1 more | Find emails |
| eddiebauer.com | #34,757 | Cloudflare edge/CDN, Google Tag Manager, Gorgias + 9 more | Find emails |
| republicain-lorrain.fr | #34,780 | ConsentMo, Google Tag Manager, reCAPTCHA v2 | Find emails |
| asmallorange.com | #34,934 | Adobe Experience Cloud (Launch), Adobe Fonts (Typekit), Cloudflare + 11 more | Find emails |
| unionleader.com | #34,945 | Google Fonts, Google Tag Manager, Google Trust Services + 3 more | Find emails |
| kmail-lists.com | #34,946 | Amazon Route 53, Astro, Cloudflare edge/CDN + 8 more | Find emails |
| webglobe.com | #34,952 | Cookiebot, DigiCert, Google Fonts + 6 more | Find emails |
| tonies.com | #34,953 | Amazon Route 53, Bazaarvoice, Cloudflare edge/CDN + 6 more | Find emails |
| getweave.com | #34,960 | Cloudflare, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| qikify.com | #35,030 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 9 more | Find emails |
| moo.com | #35,068 | Amazon Route 53, Fastly, Google Tag Manager + 4 more | Find emails |
| neweracap.com | #35,082 | Adobe Fonts (Typekit), Cloudflare edge/CDN, ConsentMo + 12 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 →