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 pjj9fdij7urce4og8l45ag74ajhui6sa.nempost.dk is not the root of its zone.
Instead, try zone transfer on nempost.dk .
Instead, try zone transfer on nempost.dk .