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 |
|---|---|---|---|
| bnnbreaking.com | #117,482 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 1 more | Find emails |
| freewebsitetemplates.com | #117,492 | Apache, Google AdSense, Google Analytics + 4 more | Find emails |
| wallspic.com | #117,505 | Google AdSense, Google Analytics, Google Fonts + 4 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| uoozee.com | #117,516 | Cloudflare edge/CDN, GoAffPro, Let's Encrypt + 7 more | Find emails |
| truebill.dev | #117,526 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| kinhtexaydung.net | #117,529 | Cloudflare, Fancybox, Font Awesome + 6 more | Find emails |
| beeslighting.com | #117,544 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 5 more | Find emails |
| ndiof.com | #117,545 | Bootstrap, DigiCert, Font Awesome + 9 more | Find emails |
| kartell.com | #117,558 | Bootstrap, Font Awesome, Google Fonts + 8 more | Find emails |
| netatlantic.com | #117,560 | Apache, Bootstrap, Fancybox + 16 more | Find emails |
| earthclinic.com | #117,561 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 20 more | Find emails |
| lo4d.com | #117,600 | Amazon Route 53, Google Analytics, Google Tag Manager + 3 more | Find emails |
| ab.gr | #117,618 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Apache + 8 more | Find emails |
| smail.fr | #117,649 | Apache, Google AdSense, Google Fonts + 6 more | Find emails |
| datafloat.com | #117,654 | ASP.NET, Bootstrap, Font Awesome + 8 more | Find emails |
| goodr.com | #117,683 | Adobe Fonts (Typekit), Attentive, Cloudflare edge/CDN + 10 more | Find emails |
| gazelle.com | #117,684 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 10 more | Find emails |
| plinko.fr | #117,705 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| nationalbook.org | #117,722 | CJ Affiliate, Google Fonts, Google Tag Manager + 9 more | Find emails |
| nordeus.com | #117,724 | Google Cloud, Google Cloud DNS, Google Tag Manager + 10 more | Find emails |
| stealth.net | #117,725 | Bootstrap, Nginx, ZoomInfo + 2 more | Find emails |
| westseattleblog.com | #117,764 | AddToAny, Bootstrap, Broadstreet + 12 more | Find emails |
| handspeak.com | #117,767 | Google Analytics, Google Tag Manager, Let's Encrypt + 3 more | Find emails |
| cudo.org | #117,770 | Cloudflare, CookieHub, Google Tag Manager + 5 more | Find emails |
| eltonjohn.com | #117,772 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 4 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 →