zone string [ class ] { type redirect; allow-query { address_match_element; ... }; allow-query-on { address_match_element; ... }; dlz string; file quoted_string; masterfile-format ( map | raw | text ); masterfile-style ( full | relative ); masters [ port integer ] [ dscp integer ] { ( masters | ipv4_address [ port integer ] | ipv6_address [ port integer ] ) [ key string ]; ... }; max-records integer; max-zone-ttl ( unlimited | ttlval ); zone-statistics ( full | terse | none | boolean ); };