A method for determining an identifier of a wireless network to which a mobile device can connect. For at least one wireless network, an identifier and at least one address for component(s) in that network is stored on the mobile device. An address of a component in an available network is received. If the address of the component is received without an identifier for the network, the received address is compared with at least one stored address. If the received address matches one of the at least one stored address, the identifier stored in association with that address is obtained. A module and a mobile device for implementing the method comprise a memory, a receiver, a comparison module and an interface module.