Also, A6 is probably a better name, but it has a worse (unworkable?) format, so AAAA is a reasonable second choice.

It's not that hard to say anyway. You read it as "quad a".

Fun fact: I mulled over whether to write “an AAAA record” or “a AAAA record”. I ended up deciding to go with “an AAAA record” even though I would read it “a quadruple A record” which is physically easier to say than “an A A A A record”.

Hah, I spell out the As -- "an A A A A record".

I also call it "w w w" and not "dub dub dub" as some people do. Though I feel neither come up in conversation all that often.

In Australia I can’t recall hearing anything other than “double you double you double you”. (But if we could do a bit of language reform, shortening w, 7 and 0 each to a single syllable like all the other letters and digits would be the first thing I’d do.) But then, “double you” flows in sequence a bit better than “ay”.