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
Area code 807 potential for confusion, this solution was ultimately not implemented. As a result, 807 is the only area code in Ontario without an overlay, and hence the only one still with 7-digit dialling. Other such Canadian area codes are 506, 709 and 867. Although Northwestern Ontario should not need an additional area code any time soon, it is still possible that 10-digit dialing may be implemented in the area in the near future. Area code 807 Area code 807 is a telephone area code in the Canadian province of Ontario, encompassing the Northwestern Ontario region. The 807 Area Code was created