The Australian operator Airnorth is a regional airline that operates both scheduled and charter services. The airline mainly offers connections in the northern parts of the country. Airnorth has about 20 destinations in total and their base is located at Darwin International Airport.
An airline hub is an airport where the airline has a heavy presence and normally some kind of headquarters. On the other hand, a focus city is a destination where the airline operates limited point-to-point routes. In these cities, the airline doesn’t necessarily need to have an office (even though this sometimes is the case). Many low-cost airlines don't use the definition 'hub' but instead define their main airports of operations as an operating base.
IATA Code: TL
ICAO Code: ANO