A Flight Information Region (FIR) is the airspace area in which an air navigation service provider will provide information and search-and-rescue services for those flights of which it is aware. Skyguide is responsible for the FIR Switzerland. This region corresponds not entirely to the national border of Switzerland either. It includes also small parts of Souther Germany and Lichtenstein, and it excludes the shouthern part of the Tessin. The FIR borders are also used by Eurocontrol to calculate air navigation serviceds charges.