Address Space
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... space according to the operational needs of the end-users and Internet
Service Providers operating networks using this address space.
Prevention of stockpiling in order to maximize the lifetime of the
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... Registration: Provision of a public registry documenting address
space allocation and assignment. This is necessary to ensure
uniqueness and to provide information for Internet trouble shooting
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... Classless
Inter-Domain Routing (CIDR), all other ISPs should request address
space directly from its upstream provider. ISPs ...
... upstream provider. ISPs only request address
space directly from regional registries if their immediate
requirement ...
... addresses currently in use and
renumber into the new provider's address space. The ISP
should allow sufficient time for the renumbering process to be
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... IDR), the Regional Registries issue
address space on appropriate "CIDR-supported" bit boundaries.
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3. ISPs are required to utilize address space in an efficient
manner. To this end, ISPs should have documented
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... determining appropriate initial and subsequent allocations.
Additional address allocations will provide enough address space
to enable the ISP to assign addresses ...
... ISP to assign addresses for three months
without requesting additional address space from its parent
registry. Please note that projected customer ...
... (VLSM) and classless technologies within their network. Any
request for address space based on the use of classfull
assumptions will require a detailed justification. The use of
classfull technologies for the purposes of administrative
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...
All other requestors should contact its ISP for address space or
utilize the addresses reserved for non-connected networks ...
... IP addresses on the Internet is
limited, the utilization rate of address space will be a key factor
in network number assignment. Therefore, in the best interest of the
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...
Organizations will be assigned address space based on immediate
utilization plus 1 year projected utilization. A prefix longer than
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... should implement variable length subnet mask (VLSM) internally to
maximize the effective utilization of address space. Address
assignments will be made under the assumption that VLSM is or will be
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... IP assignments once it
is determined the the requirement for the address space no longer
exists. In the event of address invalidation, reasonable efforts
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...
Before a registry makes an assignment, it must examine each address
space request in terms of the requesting organization's networking
plans. These plans should be documented, and the following
information should be included:
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... registries will
require an accounting of address space previously assigned to the
enterprise, if any. In the context of address space ...
... address space previously assigned to the
enterprise, if any. In the context of address space allocation, an
"enterprise" consists of all divisions and/or subsidiaries falling
under a common parent organization. The previous assignment history
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...
As stated in the foregoing text, one of the key factors in
determining how much address space is appropriate for an organization
is the expected utilization rate of the network. The expected
...
... customers follow those guidelines.
3. To maximize the effective use of address space, IP addresses need
to be assigned/allocated in classless blocks. With this in mind,
...
... Internet.
6. Information provided to request address space is often considered
sensitive by the requesting organization. The assigning
registry ...
... registry will provide the assigning registry with information
regarding the appropriate amount of address space to allocate.
7. The transfer of IP addresses ...