A wireless device blocking tool includes a user interface, a location engine, a retrieval engine, and an update engine. The user interface receives at least one of a MAC address of a device and an IP address of the device. The location engine communicates a query to an access control server, receives a response from the access control server in response to communicating the query, and determines, based on the response, that the device connected to a network through a wireless connection. The location engine also determines a WLC through which the device connected. The retrieval engine retrieves, from the WLC, an access control list. The update engine disconnects the device from the VLAN and reconnects the device through a second VLAN.