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Meaning of NXT
nIf you query for data does not exist in a zone,
the NXT RR provides proof of
non-existence
nIf after a query the response is:
uNXDOMAIN: One, and maybe many more, NXT RRs indicate that the name or a wildcard
expansion does not exist
uNOERROR and empty answer section: The NXT TYPE array proves that the QTYPE did not
exist
nNXT records are generated by tools
uYou do not have to generate NXT RRs by hand