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.
| # | 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 |
|---|---|---|---|
| druryhotels.com | #43,648 | ASP.NET, Bootstrap, Cloudflare + 16 more | Find emails |
| guiainfantil.com | #43,662 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 9 more | Find emails |
| sexselector.com | #43,669 | Cloudflare, Google Fonts, Let's Encrypt + 3 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| cabq.gov | #43,692 | ASP.NET, AddThis, Cloudflare edge/CDN + 12 more | Find emails |
| gizwits.com | #43,693 | Let's Encrypt, OpenResty | Find emails |
| weathertech.com | #43,701 | Adobe Fonts, Adobe Fonts (Typekit), Cloudflare + 12 more | Find emails |
| b2bmarketing.net | #43,702 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| aerospace-hardware.parts | #43,712 | Apache, reCAPTCHA v2, GoDaddy | Find emails |
| mobileread.com | #43,713 | Google AdSense, Google Hosted Libraries, Let's Encrypt + 2 more | Find emails |
| parkers.co.uk | #43,716 | Amazon (ACM), Amazon CloudFront, Dotmetrics + 6 more | Find emails |
| crazy-factory.com | #43,718 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| enea.pl | #43,733 | Drupal, Google Tag Manager, jQuery | Find emails |
| gaomon.net | #43,748 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 3 more | Find emails |
| click.ru | #43,749 | Google Fonts, Let's Encrypt, Nginx + 6 more | Find emails |
| bma.org.uk | #43,795 | ASP.NET, Azure API Management, Bootstrap + 6 more | Find emails |
| eobuwie.com.pl | #43,842 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| addsauce.com | #43,853 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 19 more | Find emails |
| macroscop.com | #43,854 | BotFAQtor, Cloudflare, DDoS-Guard + 11 more | Find emails |
| churchofengland.org | #43,878 | Amazon CloudFront, Civic Cookie Control, Cloudflare edge/CDN + 10 more | Find emails |
| nexnet.net.au | #43,889 | Google Maps, Let's Encrypt, Nginx + 1 more | Find emails |
| fastcloud.ge | #43,897 | Apache, Cloudflare, Font Awesome + 4 more | Find emails |
| radioreference.com | #43,907 | AOS, Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| myschoolbucks.com | #43,922 | AppsFlyer, Bootstrap, Fancybox + 14 more | Find emails |
| getdbt.com | #43,949 | Adobe Fonts (Typekit), Algolia, Amazon Route 53 + 11 more | Find emails |
| lofty.com | #43,959 | Amazon Route 53, ChatGPT Ads Pixel, Cloudflare Bot Management + 19 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 →