User attribute estimation system based on ip address

A user attribute estimation system based on an IP address, comprising:

• an IP address attribute information acquisition unit that acquires IP address attribute information, in which an IP address is associated with attribute information specifiable based on the IP address, from a first database in which the IP address attribute information is stored as history information together with date and time information;
• a user identifier attribute information acquisition unit that acquires user identifier attribute information, in which a user identifier acquired when a user terminal accesses a website is associated with an IP address and browsing related information acquired through access to the website, from a second database in which the user identifier attribute information is stored as history information together with date and time information;
• a database integration unit that integrates history information of the IP address attribute information acquired by the IP address attribute information acquisition unit and history information of the user identifier attribute information acquired by the user identifier attribute information acquisition unit into a third database by using the IP address and the date and time information as a key;
• and
• a user attribute estimation unit that estimates an attribute of the user based on information stored in the third database obtained by the integration of the database integration unit.