Press Release

Press Release

26 April 2011

Marissa Ramey

Microsoft receives court approval for transfer as agreed with ARIN

Chantilly, VA The American Registry for Internet Numbers (ARIN) announced today that Microsoft has received approval of the US Bankruptcy Court in Delaware that certain Internet Protocol (IP) number resources being transferred to Microsoft from the Nortel bankruptcy will be placed under a registration services agreement between ARIN and Microsoft.

ARIN President and CEO John Curran stated that the registration services agreement provides that the transferred Internet number resources will be managed according to the community-developed Internet address policies in the region.  Microsoft has a long-standing positive and cooperative relationship with ARIN, and ARIN is pleased to be able to work with Microsoft productively in this matter.

With the depletion of unissued IPv4 addresses looming globally, the ARIN community has developed a transfer policy designed to permit those with unneeded address space to transfer their right to use them to other organizations that can demonstrate the need for the resources.  

The specified transfer policy allows market incentives to drive better utilization of IPv4 address resources. 

About the American Registry for Internet Numbers

ARIN is the nonprofit corporation that manages the distribution of Internet number resources – IPv4, IPv6, and Autonomous System numbers – in its service region, which includes Canada, many Caribbean and North Atlantic islands, and the United States. More information on ARIN and IPv6 adoption is available at and