I don't know if it is or isn't, but it's not a good idea safety wise, you can't have them around small children or pets, as their natural predatory instincts take over.
A relative looked into getting them, apparently you can keep them in Vic but you need a pest permit? There are also minimum caging requirements and they must be fully enclosed. They are also not cheap for a pure bred one.
A guy across the road from me owns a pure alpine dingo, very docile and quite dog ( quite meaning friendly, as dingoes don't bark) though he had to put up 8 foot cyclone mesh fences to stop it escaping, as it jumped his 6 foot fences. He walks it many Km's EVERY day.
Alot of the Dingos i've seen are not pure, they have interbred with domesticated dogs. I think it would be hard to find PURE dingos even if you could keep them legally.
you can keep them in victoria, you are required by law to have a 10ft fence or caged encloser. they can be tamed and i would trust one of them over a bull arab or anyother pig dog ,thousands of people keep them in suburban back yards with kids(morons).the ones at healsville sactuary are gorgeous