Creating, modifying, and deleting DNS records

DNS is all about records. It maintains a record name to respective data-type mapping. Following are the frequently used resource record types in DNS:

Record Type	Record Name	Description
A	Address record	Used for mapping a name to IPv4 address.
CNAME	Alias record	Used for mapping an alias to hostname.
NS	Name Server record	Gives details about name servers for a given domain.
PTR	Pointer (or Reverse) record	Maps IP address to a hostname.
SOA	State Of Authority	This contains administrative information about a domain hosted by the zone. Details like who owns it, email ID, refresh interval, retry interval, etc. related to the zone.
MX	Mail Exchange record	This gives the list of email servers that can accept emails for a given domain.
SRV	Service record	This is used for mapping a service to hostname and port details.

There are some more resource record types in DNS that can be created and modified as well, and...