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Updated ARIN Allocation Information

Posted: Thursday, 30 January 2014

ARIN would like to share two items of information that may be of interest to the community.

ARIN is Issuing from Its Last Contiguous /8

First, ARIN has recently begun to issue address space from its last contiguous /8, 104.0.0.0 /8. The minimum allocation size for this /8 will be a /24. You may wish to adjust any filters you have in place accordingly.

More information on the IP address space administered by ARIN can be found on our web site at:

https://www.arin.net/knowledge/ip_blocks.html

Additionally, ARIN has placed 23.128.0.0/10 in its reserves in accordance with the policy "Dedicated IPv4 block to facilitate IPv6 Deployment" (NRPM 4.10). There have been no allocations made from this block as of yet, however, once we do begin issuing from this block, the minimum allocation size for this /10 will be a /28 and the maximum allocation size will be a /24. You may wish to adjust any filters you have in place accordingly.

More information on this policy can be found on our website here:

https://www.arin.net/policy/nrpm.html#four10

Regards,

Leslie Nobile
Director, Registration Services
American Registry for Internet Numbers (ARIN)

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