Look up A records to find the IPv4 addresses a domain resolves to. Understand what A records do, how DNS resolution works, and how to diagnose common issues.

Your domain has no MX records, which means it can't receive email. Learn why MX records are essential and how to set them up correctly.

Look up AAAA records to find IPv6 addresses for a domain. Understand dual-stack DNS, when AAAA records matter, and how to verify IPv6 connectivity.

Look up CNAME records to trace DNS aliases. Understand how CNAMEs work, their limitations, and common issues like CNAME-at-apex conflicts.

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.