With the expansion of mobile devices communication adoption, the world is facing increasing cases of theft of mobile devices, replication of IMEI, and the use of counterfeit mobile devices. To prevent usage of these irregular devices, one of the possible actions recommended at ITU-T Q.5050, ITU-T Q.5051 and ITU-T Q.5052 is the Mobile Network Operator (MNO) block the irregular mobile device unique identifier at the Equipment Identity Register (EIR) and implement of a series of device control lists (such as Permitted, Tracked and Blocked) to manage this process. The ITU-T Q.5050, ITU-T Q.5051 and ITU-T Q.5052 also indicates the need for an irregular device to be blocked at the same time in different MNOs (within the country and also around the world) and for that is required the use of a Central Equipment Identity Register (CEIR) that consolidate and distribute the data contained on these control list to all the connected Mobile Network Operator (MNO). To assist the countries aiming to implement a Central Equipment Identity Register (CEIR), this Recommendation provides detailed technical description of the CEIR system, its requirements, interfaces and basic functions that should be provided by the system and also some optional features – which may be used considering the client specific requirements. It also describes the different stakeholders of the CEIR system and their indented/expected roles and responsibilities.