individual nets inside the block... If you really want to put it in the database, why not send in an object like:

domain: 204.193.in-addr.arpa descr: blah zone-c: <person> nserver: <first server> nserver: <second server> nserver: ns.ripe.net ....

I'm really in favour of this approach, because it seems to fit nicely into the system and we can access the information with tools that need not have any special knowledge, as Marten pointed out already. Wilfried.