<P> In Australia , as in other countries , due to the increase in subscriber uptake of services such as extra telephone lines in homes , mobile phones and other services , the previous numbering plan was being stretched to its limit . It was decided to reduce the number of area codes and lengthen all subscriber numbers by one or two digits . This occurred between 1994 and 1998 , and was done progressively to ensure as little inconvenience and confusion as possible . The gradual change was also to avoid number clashes , a situation where two subscribers in two completely different locations have technically the same telephone number if dialled in their entirety . The first numbers to be converted to eight digits were numbers in the 99x xxxx and 99 xxxx ranges in the suburb of Mona Vale in Sydney , which all became 999x xxxx or 9999 xxxx on 25 July 1994 . The final codes changed to eight digits were the Queensland ( 070 ) , ( 071 ) , ( 076 ) , ( 077 ) and ( 079 ) codes , which all changed to ( 07 ) 4yxx xxxx on 10 November 1997 . </P>
<P> In Australia , as in other countries , due to the increase in subscriber uptake of services such as extra telephone lines in homes , mobile phones and other services , the previous numbering plan was being stretched to its limit . It was decided to reduce the number of area codes and lengthen all subscriber numbers by one or two digits . This occurred between 1994 and 1998 , and was done progressively to ensure as little inconvenience and confusion as possible . The gradual change was also to avoid number clashes , a situation where two subscribers in two completely different locations have technically the same telephone number if dialled in their entirety . The first numbers to be converted to eight digits were numbers in the 99x xxxx and 99 xxxx ranges in the suburb of Mona Vale in Sydney , which all became 999x xxxx or 9999 xxxx on 25 July 1994 . The final codes changed to eight digits were the Queensland ( 070 ) , ( 071 ) , ( 076 ) , ( 077 ) and ( 079 ) codes , which all changed to ( 07 ) 4yxx xxxx on 10 November 1997 . </P>
when did australia change to 8 digit phone numbers
when did australia change to 8 digit phone numbers
between 1994 and 1998
between 1994 and 1998