$ORIGIN and.
$TTL 2d
@             SOA  a.and. hostmaster.a.and. (
              2017010600 3h 15m 1w 2d )
and.          NS   a.and.
a.and.        A    10.0.0.2

$ORIGIN piros.and.
@             NS   ns.zold.and.
ns.zold.and.  A    10.0.0.3

$ORIGIN zold.and.
@             NS   ns
ns            A    10.0.0.3