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 |
|---|---|---|---|
| events.com | #49,944 | Amazon (ACM), Amazon Route 53, Elementor + 19 more | Find emails |
| xvix.eu | #49,961 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| cycling74.com | #49,970 | Amazon CloudFront, Atlassian Cloud, Cloudflare + 12 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| wooclap.com |
| #49,985 |
| Let's Encrypt, Next.js, Prismic + 4 more |
| Find emails |
| sky.com.br | #49,988 | Akamai edge/CDN, Akamai mPulse, Amazon CloudFront + 13 more | Find emails |
| hog.tv | #50,002 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 6 more | Find emails |
| wmaker.net | #50,005 | Font Awesome, Google Analytics, Google Fonts + 3 more | Find emails |
| coldplay.com | #50,011 | Adobe Experience Cloud (Launch), Apache, Let's Encrypt + 6 more | Find emails |
| euronics.it | #50,017 | Cloudflare edge/CDN, DigiCert, Google Maps + 11 more | Find emails |
| tecnofit.com.br | #50,021 | Amazon CloudFront, Amazon Route 53, Atlassian Statuspage + 15 more | Find emails |
| izhnet.ru | #50,051 | Apache, Google Analytics, Let's Encrypt + 4 more | Find emails |
| pinspb.ru | #50,054 | Bootstrap, Google Maps, Laravel + 9 more | Find emails |
| viptube.com | #50,061 | Cloudflare, Google Analytics, Google Fonts + 4 more | Find emails |
| xobor.de | #50,067 | Google Ads Conversion, Google Analytics, Let's Encrypt + 3 more | Find emails |
| mark-itt.ru | #50,076 | Drupal, Google Identity Services, Let's Encrypt + 4 more | Find emails |
| thejigsawpuzzles.com | #50,083 | DigiCert, Google AdSense, Google Analytics + 12 more | Find emails |
| youtooz.com | #50,094 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| picodi.com | #50,099 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| soft98.ir | #50,103 | Let's Encrypt, LiteSpeed | Find emails |
| falcoware.com | #50,104 | Bootstrap, Google Analytics, Google Hosted Libraries + 6 more | Find emails |
| estatesales.org | #50,105 | Amazon (ACM), Amazon Route 53, AngularJS + 7 more | Find emails |
| vosgesmatin.fr | #50,106 | AT Internet, ConsentMo, Didomi + 2 more | Find emails |
| lapoliticaonline.com | #50,129 | Let's Encrypt, reCAPTCHA v2 | Find emails |
| rothys.com | #50,163 | Amazon Route 53, Amplitude, Cloudflare edge/CDN + 11 more | Find emails |
| talkdesk.com | #50,190 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 8 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 →