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 3f9fe24c657f88507a5c10caf22162fe.conectinfo.net.br is not the root of its zone.
Instead, try zone transfer on conectinfo.net.br .
Instead, try zone transfer on conectinfo.net.br .