Disclosed is a server including a communication circuit, a memory, and a processor. The processor is be configured to store identification information and location information of at least one external device in the memory, to receive identification information of an Internet of Things (IoT) device nearby the at least one external device from the at least one external device, using the communication circuit, and to store the identification information of the IoT device in association with the identification information and the location information of the at least one external device in the memory as a database.