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 868 (i.e. dialling the last seven digits of the phone number). When calling other places in the North American Numbering Plan, callers dial as if undertaking regular ten-digit dialling in those countries. Callers dial 1 + NPA area code + seven digit phone number. Though usually toll-free when dialled from the US, not all 1-800 phone numbers are toll-free when dialled from Trinidad and Tobago, and may be treated as a toll call. When calling to areas outside the NANP (e.g., the United Kingdom), callers dial 011 + country calling code + phone number. In the case of the UK, a