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 8frh5te7sscqi0lsfg8h23ln8fjtan9n.itfservice.dk is not the root of its zone.
Instead, try zone transfer on itfservice.dk .
Instead, try zone transfer on itfservice.dk .