Learn how to perform a DNS lookup to check A, AAAA, CNAME, MX, NS, TXT, and SOA records for any domain using our free online tool.
Every time you visit a website your browser does a DNS lookup without you noticing. DNS translates domain names like example.com into IP addresses. When something goes wrong — a site won't load, emails bounce, a domain won't resolve — you need to check the DNS records yourself.
Our free DNS Lookup tool checks all the essential record types for any domain in seconds.
What Each Record Type Tells You
- A records — Maps a domain to an IPv4 address
- AAAA records — Maps to an IPv6 address
- CNAME records — Aliases one domain to another
- MX records — Directs email to the right mail server
- NS records — Shows which nameservers manage the domain
- TXT records — Stores verification data (SPF, DKIM, DMARC)
- SOA records — Authoritative server and admin contact
When You'd Use This
You just moved hosting and need to confirm A records have propagated. You're setting up email and want to verify MX and SPF records. Or your domain stopped resolving and you're checking whether the problem is DNS or the server itself.
It's also handy when migrating DNS providers — NS records tell you whether the switch has gone through. No signup needed, just type in your domain.