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 |
|---|---|---|---|
| racetracker.de | #60,651 | Bootstrap, Let's Encrypt, Matomo + 4 more | Find emails |
| hotmovies.com | #60,656 | Font Awesome, Let's Encrypt, Ruby on Rails + 1 more | Find emails |
| bromcom.com | #60,664 | ASP.NET, Azure API Management, Azure Front Door + 21 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| steamos.cloud | #60,710 | Google Cloud DNS, Let's Encrypt, Nginx + 2 more | Find emails |
| celestica.com | #60,745 | ASP.NET, Adobe Experience Cloud (Launch), Adobe Fonts (Typekit) + 14 more | Find emails |
| tomplay.com | #60,748 | Amazon CloudFront, Amazon Route 53, Bootstrap + 8 more | Find emails |
| bog.ge | #60,764 | Akamai edge/CDN, Akamai mPulse, DigiCert + 4 more | Find emails |
| pdfdrive.com | #60,767 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| terranovastyle.com | #60,787 | Akamai Edge DNS, Bootstrap, Cloudflare edge/CDN + 6 more | Find emails |
| tilebar.com | #60,825 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 6 more | Find emails |
| zenvico.me | #60,850 | GoDaddy Website Builder, GoDaddy | Find emails |
| emtg.jp | #60,863 | Amazon (ACM), Amazon Route 53, Apache + 10 more | Find emails |
| visualhunt.com | #60,891 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| shopwss.com | #60,892 | Attentive, Bazaarvoice, Cloudflare edge/CDN + 12 more | Find emails |
| ebis.ne.jp | #60,904 | Adyen, Amazon Route 53, Apache + 17 more | Find emails |
| ashford.com | #60,915 | Azure DNS, Cloudflare edge/CDN, Global-e + 8 more | Find emails |
| annonce.cz | #60,920 | Adobe Experience Cloud (Launch), Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| honda.com.vn | #60,937 | Amazon CloudFront, Axios, Bootstrap + 13 more | Find emails |
| qr.io | #60,940 | AddThis, Axios, Bootstrap + 17 more | Find emails |
| ydns.io | #60,947 | Bootstrap, Django, Font Awesome + 3 more | Find emails |
| newsletter.co.uk | #60,955 | Cloudflare Bot Management, Cloudflare edge/CDN, Dotmetrics + 10 more | Find emails |
| pestana.com | #60,957 | Azure DNS, Fastly, Google Tag Manager + 4 more | Find emails |
| uexcorp.space | #60,962 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| koleso.ru | #60,963 | Cloudflare, DDoS-Guard, Diginetica + 9 more | Find emails |
| betteruptime.com | #60,967 | AOS, Better Uptime, ChatGPT Ads Pixel + 16 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 →