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 |
|---|---|---|---|
| romspedia.com | #20,914 | Apache, Bootstrap, Font Awesome + 9 more | Find emails |
| scielo.org | #20,929 | Bootstrap, Bunny Fonts, BunnyCDN + 6 more | Find emails |
| bananacifras.com | #20,932 | Bunny CDN, BunnyCDN, Let's Encrypt + 1 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| girlswithmuscle.com |
| #20,935 |
| Django, Google Analytics, Google Tag Manager + 5 more |
| Find emails |
| wfirma.pl | #20,950 | Consentmanager.net, Google Analytics, Google Fonts + 8 more | Find emails |
| meshare.com | #20,956 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| radiotime.com | #20,961 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| iucc.ac.il | #20,969 | ConsentMo, Google Analytics, Google Fonts + 8 more | Find emails |
| nea.org | #20,986 | Adobe Fonts (Typekit), Bluesky, Cloudflare Web Analytics + 10 more | Find emails |
| balena.io | #20,987 | AWS Lambda, Amazon CloudFront, Amplitude + 27 more | Find emails |
| dcu.ie | #20,996 | Amazon Route 53, Bootstrap, Cookiebot + 8 more | Find emails |
| telecentro.net.ar | #20,998 | AOS, DigiCert, DoubleClick (Google Ads) + 10 more | Find emails |
| htmlcodex.com | #21,027 | Cloudflare, Cloudflare edge/CDN, Disqus + 10 more | Find emails |
| technetbloggers.de | #21,029 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| catbox.moe | #21,038 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 7 more | Find emails |
| jadlog.com.br | #21,047 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| aloyoga.com | #21,051 | Adobe Fonts (Typekit), Attentive, Bluecore + 17 more | Find emails |
| bongda24h.vn | #21,053 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 6 more | Find emails |
| broadway.com | #21,063 | Adobe Fonts (Typekit), Amazon Route 53, ConsentMo + 7 more | Find emails |
| mozzartbet.co.ke | #21,071 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| overclockers.ru | #21,097 | Google AdSense, Google Tag Manager, Let's Encrypt + 7 more | Find emails |
| prizegrab.com | #21,102 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 19 more | Find emails |
| fsolver.fr | #21,107 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| easydns.net | #21,138 | AddToAny, Adobe Fonts (Typekit), Apache + 9 more | Find emails |
| mundosexanuncio.com | #21,147 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 3 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 →