Telephone numbers in Australia plan (including the "Trunk Access Code"), presented in domestic format. (Geographical region boundaries do not exactly follow State borders.) The current numbering plan would appear to be sufficient to cope with potential increase in demand for services for quite some time to come. The 06 and 09 area codes are completely unused. In addition, each current area code has large number "ranges" unallocated. When dialling from outside Australia, after dialling the appropriate International Access Code it is necessary to dial the Country Code for Australia (61) followed by the nine digit "National 'Significant' Number". (The + symbol is used to
Telephone numbers in Australia represent International Access Code, e.g. +61 3 xxxx xxxx for a number in Victoria/Tasmania or +61 4xx xxx xxx for a "Mobile" number). Some numbers beginning with a 1 may be dialled without any replacement, after dialling the required International Access Code and the Country Code for Australia (+61). (see below) Australian "Local Area" numbers are of eight digits in length, conventionally written in the form xxxx xxxx. "Mobile" (Cell Phone) numbers are written in the form of ten digits in length since, when dialed within Australia, the Trunk Access Code 0 must be included, plus 4, which indicates the