ftpi-mail2010.ftpi.or.th IXFR zone transfer

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 ftpi-mail2010.ftpi.or.th is not the root of its zone.
Instead, try zone transfer on ftpi.or.th .