How many airlines own an airbus a380?

Currently three carriers operating A380's Qantas, Emiates and Singapore Airlines. Air France will also be operating one from November 09. See the related link below for complete listing of all routes and schedules flown by the A380. It is an up to date summary of all carriers, their routes and flight numbers. http://airtraveladvice.blogspot.com/2009/07/which-routes-Airbus-a380-flies.html