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 ip-185.43.29.180.rydal-group.co.uk is not the root of its zone.
Instead, try zone transfer on rydal-group.co.uk .
Instead, try zone transfer on rydal-group.co.uk .