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 au9hrdmecle4p2s4mmc09of4t5cf0ub7.rs.eserver.net is not the root of its zone.
Instead, try zone transfer on rs.eserver.net .
Instead, try zone transfer on rs.eserver.net .