A communication control apparatus for controlling communication between at least one communication apparatus and a plurality of network apparatuses residing on a plurality of networks includes a plurality of communication controllers respectively provided for the plurality of networks. Each communication controller includes a memory that stores operation determination information to be used for determining processing to be performed on transmission-and-reception information, the transmission-and-reception information to be transmitted or received by the communication controller with respect to other communication controller or one of the plurality of network apparatuses on the plurality of networks and circuitry that acquires the operation determination information in response to receiving the transmission-and-reception information and performs operation corresponding to the acquired operation determination information on the transmission-and-reception information, and a tag processor to add or remove tag information to or from the transmission-and-reception information.