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 |
|---|---|---|---|
| dorsey.com | #126,791 | Cloudflare edge/CDN, DigiCert, Font Awesome + 11 more | Find emails |
| globalrecordings.net | #126,831 | Bunny CDN, BunnyCDN, Google Analytics + 7 more | Find emails |
| naturtreu.de | #126,843 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| deklarant.pro | #126,849 | Bootstrap, Font Awesome, Google Analytics + 8 more | Find emails |
| globethics.net | #126,853 | AddToAny, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| motu.com | #126,866 | Amazon Route 53, Bootstrap, Django + 13 more | Find emails |
| churchilldowns.com | #126,916 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| winsornewton.com | #126,923 | Bugsnag, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| zoograd.com | #126,947 | Bootstrap, Font Awesome, Google Tag Manager + 7 more | Find emails |
| silhouettedesignstore.com | #126,961 | Amazon Route 53, Brevo, ConsentMo + 9 more | Find emails |
| footdistrict.com | #126,962 | Adform, Casale Media, Cloudflare + 11 more | Find emails |
| lazienkaplus.pl | #126,966 | Cloudflare, Cloudflare edge/CDN, Cookiebot + 7 more | Find emails |
| gunowners.org | #126,998 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| linklyhq.com | #127,004 | Cloudflare, Crisp, Fastmail + 7 more | Find emails |
| netams.com | #127,010 | Bootstrap, Font Awesome, Google Analytics + 10 more | Find emails |
| whizzco.com | #127,011 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 15 more | Find emails |
| stateparks.com | #127,016 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 5 more | Find emails |
| ybw.com | #127,053 | Amazon Route 53, DoubleClick (Google Ads), Fastly + 10 more | Find emails |
| keyyo.net | #127,060 | Apache, Google Tag Manager, PHP + 2 more | Find emails |
| mallbery.com | #127,114 | Express, Google Fonts, Let's Encrypt + 6 more | Find emails |
| retro-stage.com | #127,116 | Cloudflare edge/CDN, DMCA.com Protection, Google Hosted Libraries + 7 more | Find emails |
| scripts.com | #127,132 | Amazon (ACM), Amazon Route 53, Apache + 6 more | Find emails |
| bmwpower.lv | #127,134 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 12 more | Find emails |
| grc.org | #127,157 | ASP.NET, Azure DNS, Google Analytics + 8 more | Find emails |
| greatcollections.com | #127,171 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 5 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 →