An information-processing apparatus comprising: storing means configured to store notification destination information identifying a notification destination to which information regarding the information-processing apparatus is to be transmitted; notifying means configured to transmit the information regarding the information-processing apparatus to the notification destination indicated by the notification destination information stored in the storing means; receiving means configured to receive from an external apparatus a registration request requesting registration of the notification destination information in the storing means; the information-processing apparatus being characterised in that it further comprises: time information notifying means configured to transmit first time information that indicates a valid period of registration of the notification destination information to a source of the registration request in the case that the registration request meets a criterion that a notification destination indicated by the notification destination information is within a predetermined range of a network, and to transmit second time information that indicates a valid period of registration of the notification destination information to the source of the registration request in the case that the registration request does not meet the criterion, the period indicated by the second time information being shorter than the period indicated by the first time information. storing means configured to store notification destination information identifying a notification destination to which information regarding the information-processing apparatus is to be transmitted; notifying means configured to transmit the information regarding the information-processing apparatus to the notification destination indicated by the notification destination information stored in the storing means; receiving means configured to receive from an external apparatus a registration request requesting registration of the notification destination information in the storing means; the information-processing apparatus being characterised in that it further comprises: time information notifying means configured to transmit first time information that indicates a valid period of registration of the notification destination information to a source of the registration request in the case that the registration request meets a criterion that a notification destination indicated by the notification destination information is within a predetermined range of a network, and to transmit second time information that indicates a valid period of registration of the notification destination information to the source of the registration request in the case that the registration request does not meet the criterion, the period indicated by the second time information being shorter than the period indicated by the first time information. time information notifying means configured to transmit first time information that indicates a valid period of registration of the notification destination information to a source of the registration request in the case that the registration request meets a criterion that a notification destination indicated by the notification destination information is within a predetermined range of a network, and to transmit second time information that indicates a valid period of registration of the notification destination information to the source of the registration request in the case that the registration request does not meet the criterion, the period indicated by the second time information being shorter than the period indicated by the first time information.