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 ge3-14.node254-19.ftn.net.trueinternet.co.th is not the root of its zone.
Instead, try zone transfer on net.trueinternet.co.th .
Instead, try zone transfer on net.trueinternet.co.th .