DNS Record Types Reference
Searchable reference of DNS record types and what each one does.
Maps a hostname to an IPv4 address.
Maps a hostname to an IPv6 address.
Aliases one name to another canonical name.
Directs email to the responsible mail servers.
Holds arbitrary text, used for SPF, DKIM and verification.
Delegates a zone to authoritative name servers.
Start of authority: zone metadata and serial number.
Locates services by protocol and port.
Reverse lookup mapping an IP back to a hostname.
Specifies which certificate authorities may issue certs.
Rule-based rewriting used in ENUM and SIP.
Delegation signer linking DNSSEC-signed child zones.
Public key used to verify DNSSEC signatures.
Associates a TLS certificate with a name (DANE).
Legacy sender policy record (now usually TXT).
Search DNS record types to quickly recall what A, MX, TXT and other records are for.
How to use
- Type a record type or keyword.
- Scan the filtered results.
- Read what each DNS record type does.
Frequently asked questions
- What is the difference between A and CNAME?
- An A record points a name directly to an IP address, while a CNAME points a name to another name that is then resolved.
- Why use TXT records?
- TXT records store text data used by email authentication (SPF, DKIM, DMARC) and domain ownership verification.