$ORIGIN test. $TTL 1000 @ in soa localhost. postmaster.localhost. ( 1993050801 ;serial 3600 ;refresh 1800 ;retry 604800 ;expiration 3600 ) ;minimum in ns ns.test. in ns ns2.test. in ns ns3.test. b in a 1.2.3.4 $ORIGIN sub.test. in a 4.3.2.1