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 |
|---|---|---|---|
| nfieldmr.com | #21,616 | Azure DNS, Cloudflare edge/CDN, Google Trust Services + 9 more | Find emails |
| turoktv.com | #21,646 | Cloudflare edge/CDN, DataLife Engine, Google Trust Services + 3 more | Find emails |
| omegatheme.com | #21,660 | Cloudflare, Cloudflare edge/CDN, Crisp + 7 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| beforeitsnews.com | #21,662 | Cloudflare, Cloudflare edge/CDN, Fancybox + 12 more | Find emails |
| unu.im | #21,687 | Cloudflare, Google Fonts, Let's Encrypt + 6 more | Find emails |
| pistonheads.com | #21,697 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| centrepompidou.fr | #21,712 | Amazon CloudFront, DigiCert, Google Tag Manager + 6 more | Find emails |
| teleticket.com.pe | #21,717 | Axios, Azure API Management, Azure DNS + 18 more | Find emails |
| epoznan.pl | #21,727 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 14 more | Find emails |
| jet.co.id | #21,757 | Bootstrap, CNZZ, Cloudflare + 10 more | Find emails |
| adresowo.pl | #21,767 | CookieYes, Google AdSense, Google Ads Conversion + 8 more | Find emails |
| uv.mx | #21,780 | Bootstrap, Fancybox, Font Awesome + 10 more | Find emails |
| dipcon.com | #21,793 | Apache, DigiCert, Font Awesome + 9 more | Find emails |
| ashbyhq.com | #21,798 | Calendly, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| fathom.video | #21,811 | AWS Lambda, Algolia, Amplitude + 15 more | Find emails |
| orchisasia.org | #21,820 | AOS, Bootstrap, Cloudflare + 10 more | Find emails |
| princetonreview.com | #21,852 | Affirm, Braze, DigiCert + 9 more | Find emails |
| cba.pl | #21,856 | Google Analytics, Let's Encrypt, Nginx + 5 more | Find emails |
| sun.ac.za | #21,866 | Cloudflare edge/CDN, Drupal, Font Awesome + 10 more | Find emails |
| duetdisplay.com | #21,872 | Beehiiv, Cloudflare Turnstile, Cloudflare edge/CDN + 15 more | Find emails |
| seiska.fi | #21,901 | Adnami, Amazon CloudFront, Cloudflare + 12 more | Find emails |
| justpremium.com | #21,914 | AWS Lambda, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| evike.com | #21,917 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| simplic.com.br | #21,956 | Adobe Experience Cloud (Launch), Amazon (ACM), Fastly + 14 more | Find emails |
| callescort.org | #21,977 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 7 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 →