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 6788541806608b844839b37921dba97d.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 .