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 stip-static-53.195-146-132.telecom.sk is not the root of its zone.
Instead, try zone transfer on 195-146-132.telecom.sk .
Instead, try zone transfer on 195-146-132.telecom.sk .