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 v163-44-106-0.itk6.static.cnode.jp is not the root of its zone.
Instead, try zone transfer on itk6.static.cnode.jp .
Instead, try zone transfer on itk6.static.cnode.jp .