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Domain   Example Google.com Example Yahoo.com Example MSN.com
RESOURCE RECORDS (RR):
A A host address
MX Mail exchange
NS An authoritative name server
SOA Marks the start of a zone of authority
CNAME The canonical name for an alias
SIG Resource record signature [RFC2065]
PTR A domain name pointer
TXT Text strings
HINFO Host information
RP Responsible person
WKS A well known service description
MINFO Mailbox or mail list information
KEY Is used to document a key that is associated with a DNS name [RFC2065]
AAAA Record specific to the Internet class that stores a single IPv6 address [RFC 1886]
NXT Is used to securely indicate that RRs with an owner name in a certain name interval do not exist in a zone and to indicate what zone signed RR types are present for an existing name. [RFC2065]
AXFR A request for a transfer of an entire zone
IXFR A request for a transfer only the changed portion(s) of a zone DNS protocols to provide an incremental zone transfer (IXFR) mechanism [RFC1995]

Other reference: RFC1035, RFC2874

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