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
International Plumbing Code many areas also allows a broader sharing of best building practices and techniques, and improves transferability of experts such as architects, engineers, code officials, building inspectors, and other building professionals among those different areas. More adoptions also invites broader participation in the formulation the codes, which lends to the incorporation of the latest and best building techniques that enhance the safety of citizens in the areas using the codes. Some jurisdictions have adopted the International Plumbing Code in a way that gives it the force of law, while others have their own codes. International Plumbing Code The International Plumbing Code