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 ll-226.55.27.94.dp.sovam.net.ua is not the root of its zone.
Instead, try zone transfer on dp.sovam.net.ua .
Instead, try zone transfer on dp.sovam.net.ua .