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 ip-net-196-43-100-102.africaonline.co.zw is not the root of its zone.
Instead, try zone transfer on africaonline.co.zw .
Instead, try zone transfer on africaonline.co.zw .