_dc-mx.db28d29c8b60.ambc.mil.do 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 _dc-mx.db28d29c8b60.ambc.mil.do is not the root of its zone.
Instead, try zone transfer on ambc.mil.do .