Record Resource Types
This list of DNS resource record types is an overview of resource records permissible in zone files of the Domain Name System (DNS).
| Type | Type id. (decimal) | Defining RFC | Description | Function |
|---|---|---|---|---|
| A | 1 | RFC 1035 | Address record | |
| AAAA | 28 | RFC 3596 | IPv6 address record | |
| AFSDB | 18 | RFC 1183 | AFS database record | |
| APL | 42 | RFC 3123 | Address Prefix List | |
| CAA | 257 | RFC 6844 | Certification Authority Authorization | |
| CDNSKEY | 60 | RFC 7344 | Child DNSKEY | |
| CDS | 59 | RFC 7344 | Child DS | |
| CERT | 37 | RFC 4398 | Certificate record | |
| CNAME | 5 | RFC 1035 | Canonical name record | |
| DHCID | 49 | RFC 4701 | DHCP identifier | |
| DLV | 32769 | RFC 4431 | DNSSEC Lookaside Validation record | |
| DNAME | 39 | RFC 6672 | Alias for a name and all its subnames, unlike CNAME, which is an alias for only the exact name. | |
| DNSKEY | 48 | RFC 4034 | DNS Key record | |
| DS | 43 | RFC 4034 | Delegation signer | |
| IPSECKEY | 45 | RFC 4025 | IPsec Key | |
| KEY | 25 | RFC 2535 and RFC 2930 | Key record | |
| KX | 36 | RFC 2230 | Key Exchanger record | |
| LOC | 29 | RFC 1876 | Location record | |
| MX | 15 | RFC 1035 and RFC 7505 | Mail exchange record | |
| NAPTR | 35 | RFC 3403 | Naming Authority Pointer | |
| NS | 2 | RFC 1035 | Name server record | |
| NSEC | 47 | RFC 4034 | Next Secure record | |
| NSEC3 | 50 | RFC 5155 | Next Secure record version 3 | |
| NSEC3PARAM | 51 | RFC 5155 | NSEC3 parameters | |
| PTR | 12 | RFC 1035 | Pointer record | |
| RRSIG | 46 | RFC 4034 | DNSSEC signature | |
| RP | 17 | RFC 1183 | Responsible Person | |
| SIG | 24 | RFC 2535 | Signature | |
| SOA | 6 | RFC 1035 and RFC 2308 | Start of [a zone of] authority record | |
| SRV | 33 | RFC 2782 | Service locator | |
| SSHFP | 44 | RFC 4255 | SSH Public Key Fingerprint | |
| TA | 32768 | N/A | DNSSEC Trust Authorities | |
| TKEY | 249 | RFC 2930 | Transaction Key record | |
| TLSA | 52 | RFC 6698 | TLSA certificate association | |
| TSIG | 250 | RFC 2845 | Transaction Signature | |
| TXT | 16 | RFC 1035 | Text record | |
| URI | 256 | RFC 7553 | Uniform Resource Identifier |