The ACI membership consists of over 430 airports and airport authorities, running some 1,150 airports, in more than 140 countries. ACI’s primary purpose is to foster cooperation among its member airports and with other partners in world aviation. Through such cooperation, ACI aims to contribute significantly towards achieving an air transport system that is safe, secure, efficient and compatible with the environment. ACI represents the world's airports in interacting with the International Civil Aviation Organization (ICAO), with which it has observer status, and other world bodies. ACI has consultative status with the United Nations’ Economic and Social Council (UN/ECOSOC). ACI has its World Headquarters in Geneva and is made up of six regions: Africa, Asia, Europe, Latin America/Caribbean, North America, and the Pacific.