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 ppp-112.121.138.67.revip.proen.co.th is not the root of its zone.
Instead, try zone transfer on revip.proen.co.th .
Instead, try zone transfer on revip.proen.co.th .