This DNS record types reference explains the common DNS records used to configure a domain — A and AAAA for addresses, MX for mail, CNAME for aliases, TXT for verification and more.
| Record | 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 | Mail server for the domain |
| TXT | Free text — SPF, DKIM, verification |
| NS | Authoritative name servers |
| SOA | Start of authority (zone info) |
| PTR | Reverse lookup (IP to domain) |
| SRV | Service location (host + port) |
| CAA | Which CAs may issue certificates |
| ALIAS | CNAME-like record at the zone apex |