DNS Record Types Reference
Address Records
A IPv4 address mapping
AAAA IPv6 address mapping
CNAME Alias to another domain
Mail & Name
MX Mail server (with priority)
NS Authoritative nameservers
TXT SPF, DKIM, verification
SOA Record
Primary nameserver
Admin email (rname)
Serial, refresh, retry, expire
Minimum TTL for neg. caching
Common TXT Uses
SPF (email authentication)
DKIM public keys
DMARC policies
Domain verification tokens