Method for using a femtocell base station and a user equipment in a public land mobile network, wherein the femtocell base station is connected to the public land mobile network via a femtocell gateway entity, wherein at least one permission information is related to the femtocell base station, wherein the method comprises the following steps: -- in a first step, a location update signalling procedure is initiated between the femtocell base station and the user equipment, wherein at least one previous location information of the user equipment is transmitted from the user equipment to the femtocell base station, the at least one previous location information being derived from or being a part of an indication regarding the last successfully visited location of the user equipment, characterized in that -- in a second step, a test is performed whether the at least one previous location information matches the permission information, -- in a third step, the location update signalling procedure is continued in case that the at least one previous location information matches the permission information, and the location update signalling procedure is discontinued in case that the at least one previous location information does not match the permission information, wherein the permission information corresponds to at least one Mobile Country Code or to at least one Mobile Country Code and Mobile Network Code, and wherein the at least one previous location information corresponds to the Mobile Country Code or to the Mobile Country Code and the Mobile Network Code of the last successfully visited location of the user equipment, wherein in case that the at least one previous location information does not match the permission information, at least one out of the following actions is performed: -- a counter related to the unsuccessful match between the at least one previous location information of the user equipment and the permission information is changed, -- a message related to the unsuccessful match between the at least one previous location information of the user equipment and the permission information is sent to a predefined target address. -- in a first step, a location update signalling procedure is initiated between the femtocell base station and the user equipment, wherein at least one previous location information of the user equipment is transmitted from the user equipment to the femtocell base station, the at least one previous location information being derived from or being a part of an indication regarding the last successfully visited location of the user equipment, characterized in that -- in a second step, a test is performed whether the at least one previous location information matches the permission information, -- in a third step, the location update signalling procedure is continued in case that the at least one previous location information matches the permission information, and the location update signalling procedure is discontinued in case that the at least one previous location information does not match the permission information, -- a counter related to the unsuccessful match between the at least one previous location information of the user equipment and the permission information is changed, -- a message related to the unsuccessful match between the at least one previous location information of the user equipment and the permission information is sent to a predefined target address.