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 uhtfb2fqk3nojjj7q4iv3e5vk17gvcjp.carlog.dk is not the root of its zone.
Instead, try zone transfer on carlog.dk .
Instead, try zone transfer on carlog.dk .