Charging districts, zones & precincts
Standard zone units
The Numbering Plan specifies different number ranges for use in different geographic areas in Australia called standard zone units (SZUs). A SZU is a charging precinct, or the area of a charging zone less the area of any charging precinct contained within it. Australia is divided into approximately 2,100 SZUs. A list here be found here.
Districts, zones and precincts are as specified in Telstra's Public Switched Telephone Service Tariff, as in force immediately before 1 July 1997.
Last updated: 26 September 2016