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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