A communication device may shift an operation state of the communication device from a specific state to a G/O state in a case where a first wireless connection via a first wireless interface is established with a first external device under a situation where the operation state of the communication device is the specific state, supply a prohibition instruction for prohibiting a Listen process to a second wireless interface in the case where the first wireless connection is established with the first external device under the situation where the operation state of the communication device is the specific state, and after the completion of the shift, establish a second wireless connection via the second wireless interface with the first external device so as to cause the first external device to participate as a child station in a first wireless network in which the communication device operates as a G/O.