I am not clear where that question comes from and whether there is any more to it than just working out the subnetting bits. @Seb Rupik is quite correct in his answer about the supernet. But I wonder if there might be more to the discussion than just working out the subnetting bits. The question states that a company has been allocated this address range. My observations are that:
- this is a range of Public IP addresses, which suggests that the range was assigned by some service provider.
- it is a very awkward assignment and illustrates the implications of assigning address ranges that do not start on a bit boundary.
- attempts to summarize this address range, which a company would likely want to do, will result in a summary address that includes lots of IP addresses that are not part of the company's assigned address space.
- if this question were to be part of a larger exercise that asked for dynamic routing of the address space, or asked for implementation of security policies for the address space that would become quite complicated.
HTH
Rick
