DNS Records Guide: A, AAAA, CNAME, MX, TXT, NS, SOA and CAA Records

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These guides explain the main DNS record types used by websites, mail servers, third-party tools and domain security controls.

DNS records

A practical guide to common DNS record types including A, AAAA, CNAME, MX, TXT, NS, SOA, PTR and CAA records.

DNS records

Learn what CNAME records do, when to use them, and common mistakes with aliases, root domains, MX records and third-party services.

Email DNS

Learn how MX records work, how to check them, and how to troubleshoot missing or incorrect mail exchanger records.

Email DNS

Understand SPF, DKIM and DMARC DNS records, how they help protect domains, and how to check email authentication settings.

DNS basics

Learn what DNS TTL means, why it affects caching, and how to choose sensible TTL values before website or email changes.