There are 8 numbers in an Australian phone number, including the area code the is 10.
10
Mobile Directory Number The actual phone number one would dial to reach a specific mobile phone. Prior to Wireless Number Portability, MDN was the same number as the MIN for many mobile phones. But now that MDN numbers can be ported (moved) to other carriers, MDN and MIN will be different for ported numbers.
To call an English mobile that is roaming in another country, dial the English mobile number exactly the same way you would if the mobile were in England. English mobile numbers begin with +44 74 through +44 79. On a GSM mobile, enter the number in international format, beginning with the plus sign. Otherwise, replace the plus sign with your international access prefix (most commonly 00, but many countries use other prefixes. Australia uses 0011 and other prefixes.).
The Royal Australian Mint currently uses 10 presses for regular production work, along with a number of mobile presses for use at various events.
In 2006, it was reported that 90% of the Australian population owned a mobile phone.
The best way to dial any number from a GSM mobile is to have it in international format, beginning with the plus sign and the country code. The mobile network will automatically substitute the appropriate prefix.To put an Australian number in international format, just replace the trunk prefix 0 with Australia's country code +61 (including the plus sign). For example, an Australian mobile number begins with +61 4.When dialing a mobile, it does not matter if that mobile is at home or roaming; you dial it exactly the same way in either case.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, and many other countries use different prefixes.)
The country code for Australia is +61, and mobile numbers begin with 04, but you must omit the trunk prefix 0 when dialing internationally. Thus, 04 becomes +61 4.From a New Zealand landline, dial 00 61 4 etc.From a GSM mobile, dial the number as +61 4 etc. (including the plus sign), and the mobile network will automatically insert any required prefix, even if you are roaming.(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, and many other countries use different prefixes.)
It can change with a higher demand for a mobile phone. The phone company has to keep coming up with more number combinations to allow more people to buy sim cards for phones . My first mobile number only had 8 numbers. But my new number has 11 :)
Many mobile phone carriers have a caller-id service. Also if you have a smartphone there are apps that can give you a more in depth overview of the number that contacted you.
1000
for example, in Auckland, trying to dial mobile in Melbourne, EX. 0400.543.XXX 0061400543XXX. You have to dial 00 to get out, 61 country code for Australia and you MUST drop the ZERO in the Oz Mobile number, so the number would be, 400543XXX. cheers.