An information processing device that is connected to a DNS server via a network in which the information processing device and the DNS server can communicate with each other comprising: a first confirmation unit that confirms if there is a duplication of a device name of the information processing device within the same local area network; a second confirmation unit that confirms if the device name of the information processing device is a duplicate of a device name registered in the DNS server if it is confirmed there is no duplication of the device name of the information processing device within the same local area network; and a registration unit that registers the device name of the information processing device in the DNS server if it is confirmed that the device name of the information processing device is not a duplicate of the device name registered in the DNS server.