Policy Proposal 2004-5: Address Space for Multiple Discrete Networks

Status: Adopted - NRPM Section 4.5

Tracking Information

Discussion Tracking

Mailing List:

Formal introduction on PPML on 9 September 2004

Last call from 10-29 December 2004 Public Policy Mailing List

ARIN Public Policy Meeting:


ARIN Advisory Council:

21 October 2004
19 April 2005
19 May 2005
2 June 2005

ARIN Board of Trustees:

8 March 2005
16 June 2005


View previous versions


7 September 2005


Bill Darte

Organizations with multiple discrete networks desiring to request new or additional address space under a single Organization ID must meet the following criteria:

  1. The organization shall be a single entity and not a consortium of smaller independent entities.
  2. The organization must have compelling criteria for creating discrete networks. Examples of a discrete network might include:
    • Regulatory restrictions for data transmission,
    • Geographic distance and diversity between networks,
    • Autonomous multi-homed discrete networks.
  3. The organization must keep detailed records on how it has allocated space to each location, including the date of each allocation.
  4. When applying for additional internet address registrations from ARIN, the organization must demonstrate utilization greater than 50% of both the last block allocated and the aggregate sum of all blocks allocated from ARIN to that organization. If an organization is unable to satisfy this 50% minimum utilization criteria, the organization may alternatively qualify for additional internet address registrations by having all unallocated blocks of addresses smaller than ARIN's current minimum allocation size.
  5. The organization may not allocate additional address space to a location until each of that location's address blocks are 80% utilized.
  6. The organization should notify ARIN at the time of the request their desire to apply this policy to their account.

This policy supersedes section 4.5 of the ARIN Number Resource Policy Manual.

  1. Contradictions contained within policy 2001-6 have been removed and replaced with clear, concise text.
  2. Much of the procedural language contained in 2001-6 has been removed and replaced with policy language.
  3. 2001-6 made it difficult for smaller organizations to qualify as they were frequently unable to meet the 50% criteria before needing additional space for existing or new locations. The new policy utilization structure now allows both smaller and larger organizations to qualify.