Swiss International Air Lines AG (short for "Aktiengesellschaft"), commonly referred to as Swiss or Swiss Air Lines, is the flag carrier of Switzerland, operating scheduled services in Europe and to North America, South America, Africa and Asia. Zurich Airport serves as its sole hub and Geneva Airport as a focus city. The airline was formed following the bankruptcy in 2002 of Swissair, Switzerland's then flag carrier. The new airline was built around what had been Swissair's regional subsidiary, Crossair. "Swiss" retains Crossair's IATA code LX (Swissair's code was SR). It assumed Swissair's old ICAO code of SWR (Crossair's was CRX), to maintain international traffic rights. It is a member of Star Alliance and a subsidiary of the Lufthansa Group. Its headquarters are at EuroAirport Basel Mulhouse Freiburg near Basel, Switzerland, and an office at Zurich Airport in Kloten, Switzerland. The company's registered office is in Basel.