The document reviews the depletion of IPv4 address space as of September 2015, outlining key milestones in IPv4 requests leading up to the depletion and the implications for ISPs. It discusses the strong ongoing demand for IPv4, introduces options post-depletion including a waiting list and transfers, and emphasizes the importance of IPv6 adoption. Additionally, it provides guidance for both small and larger networks on how to transition to IPv6 and the procedures for policy development within ARIN.