Draft Policy ARIN-2011-2: Protecting Number Resources

Status: Closed

Tracking Information

Discussion Tracking

Mailing List:

Formal introduction on PPML on 3 February 2011

Origin - ARIN-prop-120

Draft Policy - 3 February 2011 (with staff assessment)

Abandoned by the AC - 13 April 2011

Public Policy Mailing List

ARIN Public Policy Meeting:


ARIN Advisory Council:

AC Shepherds:
Marc Crandall and Scott Leibrand

ARIN Board of Trustees:



Draft Policy ARIN-2011-2
Protecting Number Resources

Version/Date: 28 January 2011

Policy statement:

ARIN shall use any reasonable and practical methods to proactively look for fraudulently obtained or abandoned number resources and seek the return of those resources to ARIN.

Abandoned resources include, but are not limited to:

  • resources with no valid POC (per section 3.6),
  • resources assigned or allocated to a deceased individual,
  • resources assigned or allocated to a defunct or otherwise no longer viable entity, and
  • resources declared unused or abandoned by the organization to which they are allocated.

A report of activities under this policy shall be delivered at each ARIN meeting.


ARIN has generally only reactively looked for fraudulently obtained or abandoned number resources, generally via reports to https://www.arin.net/resources/fraud/.

Taking these community reports is a good first step, but ARIN can be in a far better position to know which resources were fraudulently obtained or abandoned due to the additional paperwork that ARIN holds which is not available to the public, and the record of interactions (or lack thereof) with the resource holder.

Implementation suggestions:

It is expected that the board/executive management will interpret "reasonable and practical" to mean "some amount of staff time that is not zero", but will also be fiscally viable, and to direct reviews in such a way as to provide the community a good return on invested resources. For example, ARIN could check resources without a valid POC, reclaim resources that aren't being routed, and contact the announcing/upstream ASNs of any resources that are being routed to implement record updates or to implement section 8 transfers as appropriate. The next lowest hanging fruit might be prefixes that were originally visible in the routing table, but have not been present for a long time.

ARIN should also 1) report on the aggregate quantity of number resources that were returned due to this proactive activity, 2) report on the aggregate cost to the members of this activity, and 3) obtain feedback from the membership as to whether more or less resources should be devoted to this endeavor.

Resources in use by a successor organization should not be considered abandoned, but may be reviewed as appropriate via the processes outlined in current ARIN policy (for example, sections 8.2 or 12 of the NRPM).

ARIN should attempt to contact all known POCs for a block, and only determine that it is abandoned if no POC indicates it is still in use. If a BGP advertisement for the resource in question is visible in the Internet routing table, ARIN should attempt to contact the organization responsible for the advertising ASN, as well as any organizations seen to be providing transit services for the resource, to inform them that the resource is being considered for abandoned status.

At least 30 days before reclaiming any number resource, ARIN should publicly announce their declaration that the resource is considered abandoned, and shall reconsider such declaration if additional information is provided to ARIN about the use of the resource in question.

Timetable for implementation: immediate