In Australia the Australian Media and Communications Authority (ACMA) is the equivalent of the FCC. Earlier this year the ACMA changed Amateur Service from an Apparatus Licence service to a Class Licence service. In their wisdom they moved the Amateur Callsign from the existing database to a new NON DATABASE Are you looking for an amateur call sign | ACMA
The reason I call this a NON DATABASE is that it only shows what class of licence that callsign is, no name, no address or any other detail. It has rendered Logging services useless. The only option that I can see now is use QRZ and hope the user has registered as it is not an automatic service for VK users.