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    CNAME records define an alias for an A or AAAA record.

    That’s not correct; CNAME is a domain-level alias. Important to be precise here because it’s what leads to people trying to put CNAMEs at the apex and mucking things up.

    and various timing elements for caching, refresh, and retry.

    SOA min ttl is pretty important since it’s what’s used for negative caching and bites a lot of people. I wouldn’t gloss over it.