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 |
|---|---|---|---|
| thejournal.ie | #11,631 | Amazon (ACM), Bugsnag, Cloudflare + 19 more | Find emails |
| nanosystems.it | #11,636 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| elte.hu | #11,643 | Apache, ConsentMo, Drupal + 2 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| real-debrid.com |
| #11,662 |
| DigiCert, DoubleClick (Google Ads), jQuery + 1 more |
| Find emails |
| donorbox.org | #11,679 | AddToAny, Cloudflare, Cloudflare Web Analytics + 26 more | Find emails |
| geojs.io | #11,708 | Cloudflare, Fastmail, Hugo + 5 more | Find emails |
| mollie.com | #11,727 | Ahrefs Analytics, Framer, Google Cloud DNS + 1 more | Find emails |
| adultfriendfinder.com | #11,748 | Apache, Duda, Fingerprint Pro + 7 more | Find emails |
| ucoz.com | #11,759 | Bootstrap, CleanTalk, Font Awesome + 8 more | Find emails |
| mta.info | #11,784 | Adobe Fonts (Typekit), Adyen, Akamai Edge DNS + 24 more | Find emails |
| captioncall.com | #11,794 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| builtin.com | #11,817 | ASP.NET, Adyen, Bootstrap + 23 more | Find emails |
| maxmind.com | #11,829 | Amazon CloudFront, Bootstrap, Clicky + 10 more | Find emails |
| hostifi.com | #11,831 | AWS Lambda, Ahrefs Analytics, Beehiiv + 22 more | Find emails |
| uma.es | #11,847 | Bluesky, Bootstrap, Font Awesome + 7 more | Find emails |
| botslab.com | #11,849 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 4 more | Find emails |
| voisetech.com | #11,855 | Elementor, GSAP, Google Analytics + 12 more | Find emails |
| cloudpayments.ru | #11,875 | AOS, Bitrix, CloudPayments + 12 more | Find emails |
| getscreen.me | #11,890 | Cloudflare, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| consentmo.com | #11,893 | AWS Lambda, Atlassian Statuspage, Calendly + 13 more | Find emails |
| dvrlists.com | #11,921 | ASP.NET, Google Analytics, Google Fonts + 6 more | Find emails |
| pie.org | #11,932 | Google Cloud DNS, Google Trust Services, Next.js + 2 more | Find emails |
| computer.org | #11,941 | Amazon (ACM), Amazon CloudFront, Cloudflare edge/CDN + 11 more | Find emails |
| trade.gov | #11,942 | Akamai Edge DNS, ConsentMo, CrazyEgg + 8 more | Find emails |
| mubi.com | #11,943 | Amazon (ACM), Amazon Route 53, Ashby + 4 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →