Not an apex domain
The domain ns2.p200.dns.eu-dcc-rome-1.oci.psn-pco-realm.it is not the root of its zone.
Instead, try zone transfer on eu-dcc-rome-1.oci.psn-pco-realm.it .
Instead, try zone transfer on eu-dcc-rome-1.oci.psn-pco-realm.it .