Look up NS records to see which nameservers are authoritative for a domain. Verify DNS delegation and diagnose propagation issues.

Check DNS delegation chain integrity, nameserver consistency, SOA records, and DNSSEC configuration. Diagnose why DNS changes might not be propagating.

Use the DNS Lookup tool to query any DNS record type — A, AAAA, MX, TXT, CNAME, NS, PTR, SOA — and understand what each record type does.