ns2.us-east1-b.c.manuntesti.internal 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 ns2.us-east1-b.c.manuntesti.internal is not the root of its zone.
Instead, try zone transfer on internal. .