Understand DNS record types: A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, PTR, CAA. Learn their purpose and typical use.
A — Address Record
Maps a domain to an IPv4 address
| Type | Purpose |
|---|---|
| A | Maps a domain to an IPv4 address |
| AAAA | Maps a domain to an IPv6 address |
| CNAME | Alias of one domain to another |
| MX | Routes email to mail servers |
| NS | Delegates DNS zone to authoritative servers |
| TXT | Stores arbitrary text data |
| SOA | Contains zone administrative info |
| SRV | Specifies host and port for services |
| PTR | Reverse DNS lookup (IP → domain) |
| CAA | Specifies which CAs can issue certificates |
DNS (Domain Name System) records map domain names to IP addresses and provide instructions for email routing, service discovery, and security policies. Each record type serves a specific purpose. This tool helps you understand what each record type does and when to use it.