OGC This document describes the Namespace Identifier (NID) for Uniform Resource Name (URN) Namespace resources published by the Defence Geospatial Information Working Group (DGIWG). The DGIWG defines and manages resources that utilize this URN name model. Management activities for these and other resource types are provided by the DGIWG Registry System (DRS). This document is not an Internet Standards Track specification; it is published for informational purposes.