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 |
|---|---|---|---|
| sanrio.com | #74,598 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Fancybox + 8 more | Find emails |
| boxbrownie.com | #74,600 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 19 more | Find emails |
| islamicity.org | #74,617 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| zight.com | #74,626 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 18 more | Find emails |
| wexinc.com | #74,629 | ASP.NET, Amazon Route 53, Cloudflare edge/CDN + 16 more | Find emails |
| kbm.id | #74,631 | AOS, Bootstrap, Cloudflare + 21 more | Find emails |
| wmoov.com | #74,644 | AnyMind Group, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| kigili.com | #74,645 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 5 more | Find emails |
| boletinoficial.gob.ar | #74,651 | Bootstrap, Font Awesome, Google Analytics + 6 more | Find emails |
| warnerhotels.co.uk | #74,653 | Amazon CloudFront, Azure API Management, CSC (Digital Brand Services) + 6 more | Find emails |
| dm.rs | #74,673 | Let's Encrypt, reCAPTCHA Enterprise | Find emails |
| azena.co.nz | #74,683 | AOS, Font Awesome, Let's Encrypt + 8 more | Find emails |
| xanje.com | #74,701 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 10 more | Find emails |
| privatbankar.hu | #74,707 | Bootstrap, Cloudflare, DoubleClick (Google Ads) + 12 more | Find emails |
| arianagrande.com | #74,714 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 6 more | Find emails |
| nameliquidate.com | #74,733 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| eventective.com | #74,737 | ASP.NET, Bootstrap, DoubleClick (Google Ads) + 20 more | Find emails |
| direcaoconcursos.com.br | #74,742 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| midflorida.com | #74,745 | ASP.NET, Cloudflare Bot Management, Cloudflare Web Analytics + 7 more | Find emails |
| ffw.com.br | #74,746 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 11 more | Find emails |
| ranobes.com | #74,752 | Cloudflare, Font Awesome, Let's Encrypt + 5 more | Find emails |
| moviezine.se | #74,755 | Adnami, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| bllcompras.com | #74,764 | ASP.NET, DataTables, Microsoft IIS + 6 more | Find emails |
| i-dgtl.ru | #74,801 | Amazon Route 53, Font Awesome, Google Analytics + 8 more | Find emails |
| issafrica.org | #74,827 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 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 →