ARIN updates Internet number resource rules with new NRPM 2026.1 policy

The American Registry for Internet Numbers (ARIN) has published an updated version of its Number Resource Policy Manual (NRPM), the policy framework that governs the distribution and management of certain internet resources in North America and parts of the Caribbean. The new version, NRPM 2026.1, took effect on 3 March 2026 and replaces the previous edition of the manual.

To understand the significance of this update, it helps to explain ARIN’s role. The internet depends on unique numerical identifiers known as Internet Protocol (IP) addresses. These addresses allow devices such as computers, phones, and servers to communicate with each other. Regional Internet Registries (RIRs), including ARIN, are responsible for managing the allocation and registration of these number resources within specific geographic regions. ARIN covers the United States, Canada, and several Caribbean territories.

The rules governing how these resources are allocated and administered are defined in the Number Resource Policy Manual. The document is developed through a community-driven policy process involving network operators, internet service providers, civil society, and other stakeholders. Updates to the manual reflect decisions made through this open governance system.

The newly implemented change relates to a policy proposal known as ARIN-2025-2, titled Clarify 8.5.1 Registration Services Agreement. The proposal was adopted by ARIN’s Board of Trustees during its meeting on 15 December 2025 and has now entered into force with the release of NRPM version 2026.1.

Section 8.5.1 of the policy manual concerns the Registration Services Agreement (RSA). This agreement is a contract between ARIN and organisations that receive or manage number resources such as IP addresses. The RSA sets out the legal and operational terms governing the use, registration, and transfer of these resources.

The newly adopted policy clarifies language in this section of the manual to improve consistency and interpretation of the agreement’s requirements. While the change does not introduce a new allocation mechanism, it aims to remove ambiguity in how the agreement is applied.

Policy clarifications of this kind are common within the internet number governance system, where operational precision is essential for maintaining the stability of global internet infrastructure. The updated NRPM version is now available on ARIN’s website and serves as the authoritative reference for number resource policy in the region.