A communication apparatus (10) according to the present disclosure includes a position information management unit (11) configured to manage a distribution area used in a mobile communication system and position information indicating a position of a communication terminal connected to an access system different from the mobile communication system while associating the distribution area with the position information, a communication terminal management unit (12) configured to manage the communication terminal and a distribution area to which the communication terminal belongs while associating the communication terminal with the distribution area based on positional information indicating a current position of the communication terminal, and a communication unit (13) configured to, when it receives distribution data for which the distribution area is designated as its distribution destination, transmit the distribution data, whose distribution destination has been changed to the communication terminal associated with the distribution area, to the communication terminal.