Short answer is potentially. We refer you directly to the source, the ACMA. Head to www.thenumberingsystem.com.au and click on the green button on the bottom left. Search for your number here. If its available – buy it. If not, try some other combination!
If you opt for a free standard number, it will be done quick as possible – usually we get this done within a few minutes during business day.
If you opt for a premium number (That makes a word or sequence of numbers purchased from the ACMA) then it can vary depending on the word load with the carrier, however at the time of writing we have been averaging 4 business days.