Changes since SOA version
IXFR is a zone transfer request that returns changes since a specific SOA version. Enter the SOA version to request changes since then.
Not an apex domain
The domain b56p19f6ok7qqlmc79ma9fankj5vbvle.nempost.dk is not the root of its zone.
Instead, try zone transfer on nempost.dk .
Instead, try zone transfer on nempost.dk .