That a ccTLD registry would restrict companies in the number of domains they can register is peculiar in some respects, as no such limitation exists in gTLD space ..
The .no (Norway) domain registry will be expanding the number of domains entities may register from 30 November 2011. The permitted number will be increased to 100 domains from the current 20.
Full details here.
- Innovating with New gTLDs (circleid.com)