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 185-130-164-21.kund.ip-osteraker.se is not the root of its zone.
Instead, try zone transfer on kund.ip-osteraker.se .
Instead, try zone transfer on kund.ip-osteraker.se .