[ARIN-Suggestions] Response to Suggestion 2014.26: SPARSE ALLOCATION APPORACH FOR IXP MICRO-ALLOCATIONS

[ARIN]

ARIN has issued its initial response to ACSP Suggestion 2014.26. The 
suggestion and response text are provided below. This suggestion is now 
closed and is available at:

https://www.arin.net/participate/acsp/suggestions/2014-26.html

Regards,

Communications and Member Services
American Registry for Internet Numbers (ARIN)

****
Suggestion: *

That ARIN employ a sparse allocation approach for IXP assignments out of 
micro allocation/CI IPv4 address space and at boundaries of /22. ARIN 
should publicly document that fact on its website.

Value to Community: Prevents CI from having to repeatedly and 
disruptively renumber when expanding.

*Response:*

ARIN currently has a /16 of IPv4 address space, in total, reserved for 
micro-allocation purposes and has not used a sparse allocation method to 
issue from it over the past several years. The currently reserved /16 is 
made up of fragmented smaller blocks totaling a /16 for critical 
infrastructure providers, including exchange points.

We have noted there is currently an active policy proposal to expand the 
micro-allocation reserve block from a /16 to a /15. If the community 
passes this as policy, we agree using a sparse allocation approach for 
the newly reserved /16 would benefit IXP organizations. Therefore, we 
commit to using a sparse allocation approach for issuing IPv4 addresses 
from any newly reserved block set aside by the policy development 
process for IXP organizations.
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