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Prior to 1993, most Australian PSTN telephone numbers were seven or six digits long, not including the area code. With the introduction of new carriers into the network, it was perceived that the number ranges should be increased, so all PSTN numbers had at least one digit added to the front. Now, if dialling local numbers, all PSTN numbers have 8 digits, 10 including the area code. This process was completed in 1996.

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Q: When were telephone numbers in Australia only 7 digits long?
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