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 fuel gas code appliances, furnaces, chimneys, vents, gas pipe sizing and many other such issues are addressed in the IFGC. The IFGC is the most widely used Fuel Gas code in the United States. International fuel gas code The International Fuel Gas Code (IFGC) is published by the International Code Council through the governmental consensus process and is updated on a three year cycle to include the latest advances in technology and safest mechanical practices. The current version of this code is the 2018 edition. The IFGC is published in partnership with the American Gas Association (AGA). The IFGC protects public health and