The present invention is to facilitate finding of a user expected to have a high relevance among other users present in the same living area when identification information of these other users is displayed as a list. A location information acquirer acquires location information showing a location measured in an information processing terminal. A display controller (70) carries out control to make identification information of a plurality of users be displayed on a specific terminal. The display controller (70) carries out control to make the identification information of the plurality of users be displayed in order according to timing when a reference location is measured by the specific terminal or the number of times of existence of a location shown by location information acquired from the information processing terminal corresponding to a user as a subject of display control in an area including the reference location about a case in which the location shown by the location information acquired from the information processing terminal corresponding to the user as the subject of the display control exists in the area including the reference location.