Communication control device and onboard device

A communication control device, comprising:

• a sound acquisition unit configured to acquire surrounding sounds including at least a specific sound and picked up by a sound pickup unit upon output of the specific sound from a sound output unit;
• a comparison unit configured to make an analysis of and a comparison between acoustic features of reference surrounding sounds that are surrounding sounds picked up by the sound pickup unit upon output of the specific sound from the sound output unit at a time of initial setting and acoustic features of the surrounding sounds acquired by the sound acquisition unit at a time other than the time of initial setting;
• and
• a communication control configured to, in response to determining that there is no difference between the reference surrounding sounds and the acquired surrounding sounds from a result of the comparison by the comparison unit, bring communication to and from an external device by wide area wireless communication or communication to and from a portable information terminal by short range wireless communication into a first state, and in response to determining that there is a difference between the reference surrounding sounds and the surrounding sounds from the result of the comparison by the comparison unit, bring the communication to and from the external device by the wide area wireless communication or the communication to and from the portable information terminal by the short range wireless communication into a second state more restricted than the first state.