[arin-ppml] Recommended Draft Policy ARIN-2025-8: Reserve 4.10 space for In-Region Use

[ARIN]

On 22 April 2026, the ARIN Advisory Council (AC) advanced the following Draft Policy to Recommended Draft Policy status: 

*ARIN-2025-8: Reserve 4.10 space for In-Region Use

The text of the Recommended Draft Policy is below, and may also be found at: 

https://www.arin.net/participate/policy/drafts/2025_8/

You are encouraged to discuss all Recommended Draft Policies on PPML prior to their presentation at the next ARIN Public Policy Consultation (PPC). PPML and PPC discussions are invaluable to the AC when determining community consensus. 

The PDP can be found at:

https://www.arin.net/participate/policy/pdp/

Draft Policies and Proposals under discussion can be found at: 

https://www.arin.net/participate/policy/drafts/

Regards,
 
Eddie Diego
Policy Analyst
American Registry for Internet Numbers (ARIN)


Recommended Draft Policy ARIN-2025-8: Reserve 4.10 space for In-Region Use

AC Assessment of Conformance with the Principles of Internet Number Resource Policy:

Recommended Draft Policy ARIN-2025-8 conforms to the principles of the ARIN Policy Development Process. This policy, if adopted, clarifies within the NRPM ARIN’s current practices for managing IPv4 addresses allocated to facilitate IPv6 Deployment (IPv4 allocations governed by Section 4.10 in the NRPM). There were concerns from a small subset of the community that the added language was too ambiguous. Follow-ups to both the PPML and at the ARIN 57 in-person meeting did not reveal any additional concerns about the ambiguity of the language in this policy, nor did they yield any suggestions for how the wording could be made less ambiguous. This policy did receive community support both at the most recent ARIN meeting and in prior meetings. We have found this policy to be fair and impartial, and technically sound.

Problem Statement:

ARIN 4.10 allocations, reserved to facilitate IPv6 deployment, currently have no restrictions for out-of-region use beyond the general restrictions laid out in Section 9. As the use of these allocations outside of the ARIN region seems to be contrary to the intentions for use of this space - and ARIN staff has interpreted the policy as such - the prohibition of this practice should be codified in policy.

Policy Statement:

Change the second sentence in NRPM Section 4.10 from:

“This IPv4 allocation will be set aside and dedicated to facilitate IPv6 deployment.”

to:

“This IPv4 allocation will be set aside and dedicated to facilitate IPv6 deployment within the ARIN service area”