DomainIntel – WHOIS, DNS & Domain Checker

Instant WHOIS, DNS records, SSL certificates, tech stack, and domain availability — all in one toolbar popup. No site-hopping.

DomainIntel is the all-in-one domain research toolbar for web developers, SEO professionals, domain investors, and security researchers. One click on any website gives you everything you need to know about a domain. WHOIS and registration - registrar, creation date, domain age, expiry, status codes, nameservers and DNSSEC, pulled live from authoritative RDAP registries. DNS records - A, AAAA, CNAME, MX, NS, TXT and SOA via secure DNS-over-HTTPS. Domain availability - instantly see whether a domain is registered or available; bulk-check up to 100 domains and export to CSV. SSL certificates - issuer, validity window, days-to-expiry and certificate history from public Certificate Transparency logs. Technology stack - detect the frameworks, CMS, analytics and tools running on the page you are viewing. Portfolio and expiry alerts - track your domains and get a desktop notification before any of them expire. Privacy first - no backend of our own. We never collect your browsing history. Only the domain you look up is sent, to public services. Everything returned is public record. Free tier includes 5 lookups per day. Upgrade for unlimited lookups and pro tools.