An air navigation service provider (ANSP) is a public or a private legal entity providing Air Navigation Services. It manages air traffic on behalf of a company, region or country. Depending on the specific mandate, an ANSP provides one or more of the following services to airspace users:Air traffic management (ATM) Communication navigation and surveillance systems (CNS) Meteorological service for air navigation (MET) Search and rescue (SAR) Aeronautical information services/aeronautical information management (AIS/AIM).