The Number Resource Organization (NRO): Coordinating Internet Number Resources Globally.

Coordinating across five regions

The five regional Internet registries (RIRs) are responsible for managing the distribution of Internet Protocol (IP) addresses and Autonomous System Numbers (ASNs). In order to perform their roles effectively, RIRs collaborate through a body called Number Resource Organization (NRO).

You can think of NRO as a coordinating body for all RIRs. The offices in NRO are represented by a member from each RIR.

The NRO was formed in 2003 so that RIRs can coordinate in the management of IP addresses and ASNs.

A Brief History of the NRO

The NRO came into existence on October 24, 2003, through a Memorandum of Understanding (MoU) signed by the four existing RIRs. AFRINIC later joined in April 2005. Working independently of each other, RIRs recognized that it was difficult to create a coordinated effort.

As a result, they convened to create a collaborative effort aimed to enhance the management and allocation of Internet number resources globally. On October 31, 2003, the RIRs sent an Open Letter to ICANN, notifying them of the NRO's formation and proposing the establishment of the Address Supporting Organization (ASO).

What the NRO Does

The NRO was formed with the goal of actively contributing to an open, stable, and secure Internet. It achieves this mission through several key objectives:

1. Coordinate Internet Number Registry System: The NRO achieves this by managing the allocation of IP addresses and Autonomous System Numbers efficiently.

2. Advocate for Multi-Stakeholder Model: The NRO advocates for a diverse and inclusive approach to policymaking. They do so by campaigning for a multi-stakeholder model and bottom-up policy process in Internet governance.

3. Support for RIRs: The NRO coordinates and supports joint activities among the RIRs. Through the NRO, collaboration among RIRs has become more efficient and coordinated.

In addition to its core functions, the NRO also contributes in the following aspects of the Internet:

Resource Pool Protection. The organization works diligently to protect the unallocated Internet number resource pool. It ensures that the remaining resources are used prudently

Community Input. It serves as a focal point for the Internet community to provide input into the RIR system. The NRO can serve as a medium on which diverse voices are heard.

The NRO as ASO

The NRO also acts as ICANN's Address Supporting Organization (ASO). In this role, they are responsible for making IP address policy recommendations to ICANN. This shows the NRO's significant influence in shaping global Internet policy.

How the NRO is Structured

The NRO operates through three suborganizations

Executive Council: Comprising CEOs or Directors from each of the five RIRs, the Executive Council is the governing body of the NRO. Key positions within the council, such as Chair, Vice-Chair/Secretary, and Treasurer, rotate annually to ensure fair representation.

'Secretariat: The NRO's Secretariat office is led by the Executive Secretary. They facilitate the organization's activities.

Number Council: Serving as the ASO Address Council, the Number Council is an elected body responsible for overseeing IP Address policy recommendations, managing policy development activities, and appointing members to the ICANN Board. Each RIR appoints three members to the council..

Coordination Efforts

While the NRO itself does not directly manage specific activities, it serves as a coordination point for joint RIR initiatives. These include Resource Certification (RPKI), global RIR statistics reports, global Internet governance activities, and global policy coordination.

The NRO facilitates collaboration across the RIR system through Coordination Groups in various areas, including Communications, Engineering, Registration Services, and Executive leadership.

Despite being a massive network, the Internet remains coordinated and well-structured in great part due to the NRO.

Sources and editorial context

NRS published this article on 17 April 2025; the archive records its last modification on 15 July 2026. This reading edition was prepared on 24 October 2026. The historical English wording is retained above. The sources below distinguish the founding history, the ASO agreement and the institutions’ published responsibilities.

NRO Executive Council members are appointed by each RIR Board and need not all be CEOs. Number Council members serve in their individual capacity; their institutional role is not a transferable company proxy or an NRS POA. Regional policy processes and the global policy process have distinct responsibilities. NRO coordination contributes to the Internet alongside operators, protocols, equipment and many other institutions; it does not alone account for the Internet’s stability.

For NRS, the test of coordination is whether those who depend on number resources can understand decisions, contribute to rules and obtain meaningful answers when things go wrong. Shared institutional work should make accountability clearer, not move power further from affected networks.

Original NRS article · NRO history · NRO founding MoU · The 2004 ASO agreement · NRO Executive Council · ASO AC / NRO NC · APNIC: Number Council responsibilities

Find the relevant participation route

Continue with The NRO’s role and The influence of RIRs. If resource instability affects your business, explore NRS Shield; to contribute to reform, see Current actions. Policy participation and election eligibility follow each institution’s current rules. A defined mandate lets NRS represent your network within its authorized scope and bring operators’ concerns into collective action. POA and representation requires a separate, informed, voluntary and revocable decision with a clear scope, duration and withdrawal process. Joining NRS or requesting help does not itself grant representation, a council seat or voting eligibility.