Real world company prefixes

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4A 4B 4C 4D 4E 4F 4G 4H 4I 4J 4K 4L 4M 4N 4O 4P 4Q 4R 4S 4T 4U 4V 4W 4X 4Y 4Z
1 4W Warbelow's Air Ventures, Inc. ICAO: VNA, Callsign: Ventaire, ICAO designator changed to WAV USA AVCODES
2 4W Allied Air Limited ICAO: AJK, Callsign: Bambi, IATA Prefix: 574, WAN AVCODES
3 4W Warbelow's Air Ventures, Inc. ICAO: WAV, Callsign: Ventaire, ICAO designator changed from VNA. ICAO callsign changed to Warbelow USA AVCODES
4 4W Warbelow's Air Ventures, Inc. ICAO: WAV, Callsign: Warbelow, ICAO designator changed from VNA. ICAO callsign changed from Ventaire USA AVCODES