in-addr.arpa subdomain problem

[lancer81 at cablespeed.com]

I am setting up a new server running bind 9.2.1 to replace 
a bind 8.1.2 server. In testing this I am able to do 
reverse lookups on class C subnets but not subdomains 
(e.g. /25). If I am reading dig output properly the server 
is directing request to root servers rather than handling 
it locally.

------------

zone    "128-255.12.12.12.in-addr.arpa" in {
         type master;
         file "12.12.12.128.reverse.db";
         allow-update { none; };
};

------------

;12.12.12.128.reverse.db
;
$TTL 3h
@ IN SOA ns1.domain.com. hostmaster.domain.com. (
                 2004080501      ; serial
                 3h      ; refresh
                 1h      ; retry
                 15d     ; expire
                 1h )    ; neg cache ttl

@       IN      NS      ns1.domain.com.
@       IN      NS      ns2.domain.com.

129     IN      PTR     host1.domain.com.
130     IN      PTR     host2.domain.com.

------------

[user at ns1]# dig @ns1 12.12.12.129

; <<>> DiG 9.2.1 <<>> @ns1 12.12.12.129
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 29600
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, 
ADDITIONAL: 0

;; QUESTION SECTION:
;12.12.12.129.                 IN      A

;; AUTHORITY SECTION:
.                       10800   IN      SOA 
    A.ROOT-SERVERS.NET. NSTLD.VERISIGN-GRS.COM. 2004080401 
1800 900 604800 86400

;; Query time: 16 msec
;; SERVER: 13.13.13.13#53(ns1)
;; WHEN: Thu Aug  5 10:51:12 2004
;; MSG SIZE  rcvd: 106