User:ZanderSchubert/Phone

Former Area Codes and Systems of Change
The following table is listed in numerical order by area code. Note that this does not list all current numbers for a certain area. See the Australian telephone numbering plan for more information.

Minor Changes
Kangaroo Island was the only area in Australia that wasn't integrated into a larger area code before the change to eight-digit phone numbering, and had the only four-digit area code, (0848). The Kangaroo Island area was incorporated into the (08) 855x xxxx number range with a significant change to subscriber numbers (for example (0848) 21 000 became (08) 8553 0000).

In order to prevent incorrect connections during the changeover period, a number which would otherwise have the first digits of its old form the same as the first digits of its new form had to be changed. For example, (043) 432 123 may be confused with (02) 4321 2345 (which would be used for (043) 212 345) during the change. To prevent this, before the change to eight digits, the local number was changed, so that, in the example, (043) 432 123 would become (043) 442 123, and then (02) 4344 2123. A list of all numbers changed in this way is shown in the table below.