INTRODUCTION
The Internet Activity Survey (IAS) collects details on aspects of internet access services provided by Internet Service Providers (ISPs) in Australia. This release contains data from ISPs with more than 1,000 subscribers operating in Australia as at 31 December 2011.
The ABS counts subscribers that have an internet connection with an ISP on the last day of the reference period. ABS subscriber statistics measure the number of 'subscriber lines' rather than the number of 'users' and therefore, counts of subscribers are not the same as counts of people/organisations with internet access. This is because some subscribers may have accounts with more than one ISP or multiple accounts with a single ISP. Conversely, there are single ISP subscriber accounts that provide internet access for multiple people/organisations (for example, universities).
Mobile handset subscriber numbers and associated data download volumes are reported in a separate chapter. All other data reported in this release excludes mobile handsets.
CHANGES IN THIS ISSUE
The layout of this release has changed to a magazine-style format with chapter headings.
DATA QUALITY
Information about data quality provided in the Explanatory Notes and Quality Declaration must be taken into consideration when interpreting the statistics in this release.
STRUCTURE OF THIS RELEASE
There are two components to this release: web based information and Data Cubes. The data cubes contain the detailed data that underpins the tables and commentary included in the web based information.
ROUNDING
Where figures have been rounded, discrepancies may occur between the sum of components and the total. Proportions have been calculated using unrounded data.
INQUIRIES
For further information about this release, contact Neil Griffin on (08) 9360 5257.
Quality Declaration 
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