Types of DNS Entries

A
These take names to ips, like www.serverbuddies.com -> 67.228.43.85

PTR
These take ips to a hostname, like 67.228.43.85 -> www.serverbuddies.com

MX

MX records are used by mail servers to look up who to send mail to.

CNAME

This is an alias to another name. Like www.serverbuddies.com CNAME serverbuddies.com

TXT
Text records, these are free form text strings, used for things like SPF records.

NS
These say which servers are authoritative for the domain.

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