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 8F34C1D0979EA45051767ECEB1C00CE9.aster.net.do is not the root of its zone.
Instead, try zone transfer on net.do .
Instead, try zone transfer on net.do .