The Domain Name System (DNS) is a hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities. Most prominently, it translates easily memorized domain names to the numerical IP addresses needed for the purpose of locating computer services and devices worldwide. The Domain Name System is an essential component of the functionality of the Internet.
This List of DNS record types provides an overview of types of typical resource records (database records) stored in the zone files of the Domain Name System (DNS). There are many more record types, but these are the most common. To see a full list on Wikipedia
A (Host) Records
AAAA (Host) Records
CNAME (Alias) Records
MX (Mail Exchange) Records
TXT (Text) Records
SRV (Service) Records