Reassignment of address space between organisations or between different autonomous parts of an organisation needs the approval of an Internet registry. One indication that such a reassignment is happening is that the organisation of the administrative contact changes.

No problem with me. But in my opignion this policy hasn't been clearly defined until now. One problem I see, is that smaller organizations with a class B - there are many around - will not change to class C's unless they see a benefit for some other organization they are related to. If the reassignment of address space is according to the same rules as assignment of new address space, then why not ask for new one? I doubt whether Daniels maxim 'be a good citizen - give back under used address space' works with real humans. Willi Huber