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 193.105.189.70-no-dns-yet.optinet.co.uk is not the root of its zone.
Instead, try zone transfer on optinet.co.uk .
Instead, try zone transfer on optinet.co.uk .