A- Address, specifying the IP address
CNAME- Canonical name, an alias pointing to the true name of the host. Requires its right hand side to have an A record.
HINFO- Host information, detailed information about the specific host, such as location or operating system version.
LOC- Location, specifies the geographical location of the host.
MX- Mail exchange, specifies that the host on the left side will accept mail for the host on the right hand side at the priority shown (lower is preferred).
NS- Name server, specifies a host that will act as a domain name server for the specified domain.
PTR- Pointer, used to provide reverse lookups.
RP- Responsible person, the contact information for the specified domain.
SOA- Start of authority, the meta information for the specified zone. Contains email
information, a serial number, and the time to live values. The specific format is defined in RFC 2181.
TXT- Text, a comment on the record. Otherwise ignored.
WKS- Well-known services, lists those services for a host. Allows for mnemonics (http,smtp, telnet) instead of specifying port numbers (80, 25, 21).