DomainInfo — Website Tech Stack Inspector

Instantly see CDN provider, tech stack, security headers, DNS records, and WHOIS info for any site. All in one popup. No copy-paste.

DomainInfo gives you a complete technical profile of any website in one click. Instead of juggling multiple tools—MXToolbox, BuiltWith, Whois.net, and SecurityHeaders.io—DomainInfo aggregates it all into a single clean popup directly from your toolbar. **Key Features:** - Tech stack detection: CMS, frameworks, CDN, analytics, payment providers - WHOIS lookup: registrar, registration date, expiry date, registrant - DNS records: A, AAAA, MX, TXT, NS, CNAME - Security headers audit: HSTS, CSP, X-Frame-Options, and more - SSL certificate details: issuer, expiry, SANs - IP address and ASN information - CDN and hosting provider detection **Who is it for?** Security researchers doing initial reconnaissance, developers researching competitor tech stacks, sales professionals qualifying prospects, and system administrators auditing domain configurations. Anyone who asks "what's this site built with?" more than once a week. **Privacy & Trust:** Domain names (not full URLs) are sent to public DNS-over-HTTPS APIs (Cloudflare/Google) for DNS resolution. No personal data is collected or transmitted. Anonymous analytics via Google Analytics 4 only. Install DomainInfo — know everything about any site instantly.