$ORIGIN .

$TTL 300 ; 5 minutes

parent.nil IN SOA ns1.parent.nil. hostmaster.parent.nil. (

1 ; serial

2000 ; refresh (33 minutes 20 seconds)

2000 ; retry (33 minutes 20 seconds)

1814400 ; expire (3 weeks)

3600 ; minimum (1 hour)

)

NS ns1.parent.nil.

NS ns2.parent.nil.

$ORIGIN parent.nil.

$TTL 3600 ; 1 hour

a A 1.1.1.1

$TTL 300 ; 5 minutes

ns1 A 10.53.0.1

ns2 A 10.53.0.2

child NS ns.child

ns.child A 10.53.0.3