sydb1smx1b-nat.anzsa.fdi.1dc.com IXFR zone transfer

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 sydb1smx1b-nat.anzsa.fdi.1dc.com is not the root of its zone.
Instead, try zone transfer on anzsa.fdi.1dc.com .