Ah, some better examples here: http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-bind-zone.html
How is this file:
# cat /var/named/exampleA.com.hosts
$ORIGIN exampleA.com. $TTL 1h exampleA.com. IN SOA ns1.exampleA.com. ns2.exampleA.com. ( 1; Serial - increment me 10800 3600 604800 38400 ) IN NS ns1.exampleA.com. IN NS ns2.exampleA.com. exampleA.com. IN A 1.1.1.1 exampleA.com. IN A 1.1.1.2 ns1 IN A 1.1.1.1 ns2 IN A 1.1.1.2