REGION IDENTIFICATION SERVER, REGION IDENTIFICATION METHOD, REGION IDENTIFICATION PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM STORING THE PROGRAM

A content server (10) includes a receiving unit (14) that receives a request signal from a request source terminal, an acquisition unit (15) that acquires an IP address assigned to the request source terminal from the request signal, and a determination unit (16) that determines a location region of a user of the request source terminal by referring to an address storage unit (11) based on the acquired IP address. The address storage unit (11) stores address information including location regions of registered users set based on addresses of the registered users and IP addresses assigned to terminals of the registered users in association with each other.