smtp1.email.ap-dcc-tokyo-1.ocs.nricloud.jp 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 smtp1.email.ap-dcc-tokyo-1.ocs.nricloud.jp is not the root of its zone.
Instead, try zone transfer on ap-dcc-tokyo-1.ocs.nricloud.jp .