In an in-vehicle router, a narrow-range communication module (10A) is a device capable of wireless communication. A wide-range communication module is a device capable of wireless communication in the wider range than the narrow-range communication module. An Ethernet module is connected to an in-vehicle LAN in a vehicle so that communication is possible. A CPU controls the narrow-range communication module and the wide-range communication module and communicates with the in-vehicle LAN through the Ethernet module. The narrow-range communication module, the wide-range communication module, the Ethernet module, and the CPU are assembled to a housing, and the housing is provided to the vehicle.