If you are a hosting or colocation company, you may want to give to your customers a distant access to your datacenter, with one or several routers dedicated to every customer.
You will also attach IP addresses to those routers, to your customers, and to his/her servers.
You will therefore have to manage IP blocks, that you will split and allocate.

DataCenterVision has already implemented the capacity to efficiently manage this whole process.
So, for example, you will know which IP addresses remain available, and which ones are already used, and how.