Recommended RLZ design

Howdy!

in our network we have hundreds of subnets and due to redesigns of LANs etc these subnets change over time.  For each of these subnets we create a RLZ in our AD integrated DNS.  This works fine but we have to constantly chase local IT Staff for any subnet changes and in turn update our DNS infrastructure.  My question is instead of using hundreds of /24 RLZ (i.e. 80.142.10.in-addr.arpa), can we setup a single /8 RLZ (i.e. 0.0.10.in-addr.arpa) that covers all the subnets so we don't have to worry about updating the RLZ all the time? 

Thanks in advance for your input

Stefano