International Dialing Codes - Australia
Country Code +61
Area Codes by Region and State
Central East Region
(New South Wales, Australian Capital Territory. parts of northern Victoria)
South East Region
(Tasmania, most of Victoria & parts of southern New South Wales)
Digital GSM Mobile phones
North East Region
Central & West Region
(South Australia, Northern Territory & Western Australia)
Other Helpful Numbers
Prefix to Block CND (Calling Number Display) 1831 Dial & Hang-up to test ring-back of phone 127-22199 To obtain number of line you are using (Telstra) 127-22123 To obtain number of line you are using (Optus) 127-2312 To obtain number of line you are using (all mobile phones) 018-018-222
Notes about mobile phones in Australia
Digital GSM Mobile phones (area code 4): the Australian GSM mobile standard is GSM 900/1800, with CDMA service in some areas.
Telstra discontinued its AMPS-800 analog network nationwide in 2002, having replaced it with a CDMA-800 network. Orange also offers CDMA service.
Here's a list of the mobile networks active in Australia:
GSM roaming agreements exist between Australian and USA carriers for those with Dual-Band 900/1900 or Tri-Band 900/1800/1900 handsets, or USA-based SIM cards can be used in GSM-900 and 1800 handsets.
The Australia Communications Authority is
responsible for administration of Australia's telecommunications policies.
http://www.exportbureau.com/telephone_codes/city_australia.html -- Updated
International City Dialing Codes