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 20R9RLU7E0G8C937441BUV76B6749MAO.ovikenergi.net is not the root of its zone.
Instead, try zone transfer on ovikenergi.net .
Instead, try zone transfer on ovikenergi.net .