Question: Amazon Prime Air is a cargo airline that contracts through ABX Air, Inc., formerly known as what, is a cargo airline headquartered at Wilmington Air Park near the City of Wilmington, Ohio, USA?

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SkyLink Express: SkyLink Express is a cargo airline headquartered in Mississauga, Ontario, Canada.  It operates dedicated air cargo/courier feeder flights throughout Canada and USA and provides on demand air cargo charters from its bases in Vancouver, Winnipeg, Hamilton and Montréal-Mirabel.

Martinair: Martinair, legally "Martinair Holland N.V.", is a Dutch cargo airline headquartered and based at Amsterdam Airport Schiphol and a subsidiary of Air France-KLM.  The airline was founded in 1958 by Martin Schröder.  Since 2011, Martinair has operated entirely as a cargo airline with scheduled services to 20 destinations worldwide and additional charter flights.  Prior to that date, passenger flights were also operated.

ABC Air Hungary: ABC Air Hungary Ltd. (Hungarian: ABC Air Hungary Kft.  ) is a cargo airline based at Budapest, Hungary.  Its head office is located in Terminal 1 of Budapest Ferenc Liszt International Airport.  Founded in 1998, the company operated daily cargo flights with LET-410-UVP-E, SAAB 340A, ATR-42, Airbus 300 and Boeing 737-300.  The aircraft fleet consisted of three Let L-410 Turbolet in May 2010.  It had also two SAAB 340A cargo variants.  2001 – the first long term contract with DHL.  2003 – extension of the business with operation for TNT and UPS.  Cargo charter flights for the biggest courier companies – DHL, UPS, FEDEX and TNT, based on direct contracts, or in co-operation with Bridges Worldwide.ABC operated also ad-hock charter flights.

Amazon Prime Air: Amazon Prime Air is a cargo airline that contracts through Air Transport International, ABX Air, and Atlas Air, as well as a conceptual drone-based delivery system currently in development by Amazon.com.  The cargo side is based at Cincinnati/Northern Kentucky International Airport in Hebron, Kentucky, near Cincinnati, Ohio.  The hub began operations on April 30, 2017 and will quickly expand under a $1.49-billion expansion plan with 40 Boeing 767-300F's and 200 daily takeoff and landings.

North Star Air: North Star Air is a Canadian charter and cargo airline headquartered in Thunder Bay, Ontario, with secondary passenger hub in Sioux Lookout, Ontario, and cargo hubs located in Pickle Lake, and Red Lake, Ontario.  The majority of destinations served are remote First Nations communities, with regular service to 18 airports under "Flex Flight Passenger Service", and other regional destination under an on-demand basis.  Founded in 1997 as a floatplane operator with two DHC-2 Beaver aircraft based in Pickle Lake, ON, the airline has grown over the years and came under new ownership in 2012.  In 2015 Cargo North and North Star Air merged under the North Star banner.

Gemini Air Cargo: Gemini Air Cargo was an American ACMI (Aircraft, Crew, Maintenance, & Insurance) cargo airline headquartered in Dulles, Virginia, USA.  It operated worldwide cargo schedules and charters on a wet-lease basis.

Wilmington Air Park: Wilmington Air Park (IATA: ILN, ICAO: KILN, FAA LID: ILN) is a public-use airport located two nautical miles (3.7 km) southeast of the central business district of Wilmington, a city in Clinton County, Ohio, United States.  While DHL had privately owned the property while operating from the facility, the company agreed to donate the property to the Clinton County Port Authority.

Airborne Express: Airborne Express (IATA: GB, ICAO: ABX, Call sign: Abex) was an express delivery company and cargo airline.  Headquartered in Seattle, Washington, its hub was at Wilmington, Ohio.

ABX Air: ABX Air, Inc., formerly Airborne Express, is a cargo airline headquartered at Wilmington Air Park near the City of Wilmington, Ohio, USA.  ABX Air operates scheduled, ad hoc charter and ACMI (Aircraft, Crew, Maintenance and Insurance) freight services.  It also provides flight support services and training.  ABX Air is owned by Air Transport Services Group.

Aloha Air Cargo: Aloha Air Cargo is an American cargo airline headquartered in Honolulu, Hawaii, operating from a hub at Honolulu International Airport.  Formerly part of Aloha Airlines, it became an independent cargo operator following the closure of the passenger airline in 2008.

Supporting paragraphs: Amazon Prime Air ABX Air
Answer: Airborne Express