When reserving a company name prior to the registration of a company an ASIC Form 410 (Name Reservation) is required to be lodged. Once the form is lodged, ASIC will provide a reservation number which consists of 8 digits and one alphanumeric character (e.g. 2E1234567).
Note: That lodgement of the Form 410 will cost an additional fee with ASIC. For more information on the fee refer to Starting a company