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 host-87-2-239-46.retail.telecomitalia.it is not the root of its zone.
Instead, try zone transfer on retail.telecomitalia.it .
Instead, try zone transfer on retail.telecomitalia.it .