Abstract: A notification server, notification method and notification program to perform watch over a person to be watched who uses on-demand transportation. A transceiver part receives boarding/alighting information comprised of a date and time of boarding/alighting, a stopping point of a vehicle and a name of a boarding person or a name of alighting person transmitted from an information terminal apparatus mounted on a shared vehicle, and a notification information generating part acquires a notifying destination associated with the received name of the boarding person or the name of the alighting person from a notifying destination storage part and generates notification information addressing to the acquired notifying destination, and a transceiver part transmits the generated notification information.