Provided is a relay device including a communication control unit configured to control communication with an external device. The communication control unit maintains a session with an information processing apparatus that transmits first information when the first information including specific information that is able to specify a calling party in a voice call is acquired by communication, causes second information including the specific information included in the first information to be transmitted to a first external device, specifies the information processing apparatus having transmitted the first information on the basis of the specific information included in acquired third information when the third information including the specific information and information for transmission is acquired from the first external device or a second external device after the second information is transmitted, and causes information included in the third information to be transmitted to the specified information processing apparatus by the maintained session.