[ih] qdcount

Joe Abley jabley at hopcount.ca
Thu Feb 11 13:54:10 PST 2016


Hi John,

> On Feb 11, 2016, at 14:38, John Kristoff <jtk at depaul.edu> wrote:
>
> The DNS specs refer to the QDCOUNT, ANCOUNT, NSCOUNT and ARCOUNT fields
> in the DNS header.  I've always assumed ANCOUNT = ANswer COUNT, NSCOUNT
> = Name Server(s) COUNT, ARCOUNT = Additional Record(s) COUNT and QDCOUNT
> = Query COUNT, but what does the 'D' stand for, if anything?  Data?
> Domain(s)?

That's an interesting question. I can't believe I never thought to ask
it myself. I am apparently weirdly accepting of "QD" being a
reasonable shorthand for "question".

I take it Paul is not on this list -- have you tried asking him
directly? He would surely remember.


Joe



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