The Open Data Device Registry API provides a way to assign an organization a number for unambiguous identification of devices. This API is RESTful and enables data sets registration within the Unit Register Database for Legal Entities and Other Devices. The API allows users to identify organizational number, submit a unit at the lowest level in the registration structure of the Unit Registry, and more. Methods are available to retrieve lists of links to other services, search for devices, get a specific device and more. The Brønnøysund Register Centre is entrusted by the government of Norway for management of registers for individuals and businesses concerning data services and the development of electronic services, especially for trade and industry.