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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
...
... IR, and any designated regional registries,
allocate addresses in conformance with this overall scheme. Where
there are qualifying regional registries established, primary
...
... NCC) had been allocated a block of
Class C addresses (193.0.0 - 193.255.255) prior to the adoption of
this proposal. The RIPE NCC has agreed to allocate the addresses ...
... addresses (193.0.0 - 193.255.255) prior to the adoption of
this proposal. The RIPE NCC has agreed to allocate the addresses
within that block according to the guidelines stated in this RFC.
...
... regional registries in geographic areas, the IR will assign addresses
to networks within those geographic areas according to the Class ...
... IANA and the IR will reserve the upper half of this space which
corresponds to the IP address range of 208.0.0.0 through
223.255.255.255. Network ...
... network number space will be allocated in a
fashion which is compatible with potential address aggregation
techniques. It is intended to divide this address range into eight
...
... fashion which is compatible with potential address aggregation
techniques. It is intended to divide this address range into eight
equally sized address blocks.
...
... techniques. It is intended to divide this address range into eight
equally sized address blocks.
192.0.0.0 - 193.255.255.255
...
... 206.0.0.0 - 207.255.255.255
Each block represents 131,072 addresses or approximately 6% of the
total Class C address space ...
... addresses or approximately 6% of the
total Class C address space.
It is proposed that a broad geographic allocation be used for these
...
...
It is proposed that a broad geographic allocation be used for these
blocks. At present there are four major areas of address allocation:
Europe, North America ...
... IR, and any designated regional registries,
allocate addresses in conformance with this overall scheme. Where
there are qualifying regional registries established, primary
...
...
The exhaustion of the IP address space is a topic of concern for the
entire Internet community. This plan for the assignment of Class ...
... network number space in a fashion which
is compatible with proposed address aggregation techniques
...
... number space can support the largest number of unique
host identifier addresses and is also the class of network numbers
...
... network numbers which are unassigned or unreserved, and these 11
network numbers represent about 9% of the total address space.
The IANA ...
... number space will be reserved indefinitely (IP network addresses
64.0.0.0 through 127.0.0.0). While it is expected that no new
...
... Class C numbers. This is unfortunate, but inevitable if we implement
strategies to control the assignment of Class B addresses. The
intent of these guidelines is to balance these costs for the greater
good of the Internet ...
... Class B assignment, the applicant will be allocated a block
of Class C addresses.
There may be some circumstances where the organization is unable to
...
... network number registries.
This section addresses assignment of network numbers from within
regional block assignments. Sub-allocations of the block to sub-
...
...
For instance, an European organization which requires fewer than 2048
unique IP addresses and more than 1024 would be assigned 8 contiguous
class C network ...
... networks, 194.0.0.0 - 195.255.255.255. If an organization from
Central America required fewer than 512 unique IP addresses and more
than 256, it would receive 2 contiguous class C network ...
... subscriber based on the subscriber's 24 month
projection of required end system addresses according to the
following criteria:
...
... 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.
...
... If a subscriber has a requirement for more than 4096 unique IP
addresses it could conceivably receive a Class B network number.
...
... Class C network numbers. For instance, if an organization
requires fewer than 8192 addresses and requests 32 Class C network
...
... be modifications in the technology to support the larger number of
network address assignments due to the decrease in assignments of
Class A and B numbers and the proliferation of Class ...
... Class C assignments.
Many proposals have been made to address the rapid growth of network
assignments and a discussion ...
... management of the current IP network number
space only profess to delay depletion of the IP address space, not to
postpone it indefinitely.
...
... Wang, Z., and J. Crowcroft, "A Two-Tier Address Structure for the Internet: A Solution to the Problem of Address Space Exhaustion", RFC 1335 ...
... 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. ...
... Solensky, F., and F. Kastenholz, "A Revision to IP Address Classifications", Work in Progress, March 1992. ...
... Fuller, V., Li, T., Yu, J., and K. Varadhan, "Supernetting: an Address Assignments and Aggregation Strategy", RFC 1338(-> 1519(-> 4632)), BARRNet, cisco ...
... Rekhter, Y., and Li, T., "Guidelines for IP Address Allocation", Work in Progress, August 1992. ...
... Author's Address ...