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 internet-por-fibra-244-97.cableatlantico.com is not the root of its zone.
Instead, try zone transfer on cableatlantico.com .
Instead, try zone transfer on cableatlantico.com .