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 dynamic-bsb-2804-984-80-8a-0-0-0-6.brava.net.br is not the root of its zone.
Instead, try zone transfer on brava.net.br .
Instead, try zone transfer on brava.net.br .