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 5-cinco.6-seis.7-sete.5-cinco.a4.copernico-res.resultadosespeciais.we.bs is not the root of its zone.
Instead, try zone transfer on we.bs .
Instead, try zone transfer on we.bs .