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 40.4.203.91.in-addr.arpa.samsung.kh.ua is not the root of its zone.
Instead, try zone transfer on samsung.kh.ua .
Instead, try zone transfer on samsung.kh.ua .