Address Space
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... registry per geographical region at this level to provide for
efficient and fair sub-allocation of the address space. To be
selected as a distributed regional registry an organization should
...
... addresses or approximately 6% of the
total Class C address space.
It is proposed that a broad geographic allocation be used for these
...
... network numbers which are unassigned or unreserved, and these 11
network numbers represent about 9% of the total address space.
The IANA ...
... where the lack of Class C subnetting would result in an extravagant
waste of address space, the registries may request an engineering
plan detailing why subnetting is impossible.
...
... Wang, Z., and J. Crowcroft, "A Two-Tier Address Structure for the Internet: A Solution to the Problem of Address Space Exhaustion", RFC 1335, University College London, May 1992. ...