- A
- The IPv4 address a domain points to.
- AAAA
- The domain's IPv6 address — the modern counterpart of an A record.
- MX
- Mail servers that accept email for the domain. The leading number is the priority: lower wins.
- TXT
- Free-form text. This is where SPF, DKIM, DMARC and domain-ownership proofs live.
- NS
- The authoritative DNS servers that serve the domain's zone.
- CNAME
- An alias pointing one name at another domain. Cannot coexist with other records on the same name.
- SOA
- Zone metadata: primary NS, admin email, serial number and refresh timers.
- CAA
- Which certificate authorities are allowed to issue SSL certificates for the domain.
- SRV
- Host and port of a specific service. Queried on names like _sip._tcp.example.com — priority, weight, port, host.
- PTR
- The reverse record: which name sits behind an IP address. Enter an IP to run a reverse DNS check.