subnet-titan2-195-20-97-176.skif.com.ua IXFR zone transfer

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 subnet-titan2-195-20-97-176.skif.com.ua is not the root of its zone.
Instead, try zone transfer on skif.com.ua .