Abstract: The Australian Government has asked NBN Co, the company building the National Broadband Network (NBN), to prioritise the many Australians without adequate fixed line broadband in the rollout. To assist with the prioritisation of under-served areas, the Government asked the Department of Communications to undertake an analysis of broadband quality and availability in all areas of Australia. Broadband services are delivered using a range of technologies to homes and businesses across the country. The infrastructure most often used to provide broadband includes asymmetric digital subscriber line (ADSL) technology over the copper access network, the 3G and 4G mobile networks, hybrid fibre coaxial (HFC) networks originally rolled out for subscription television, fibre to the node (FTTN) networks and fibre to the premises (FTTP) networks. In addition to these terrestrial networks, all Australian premises are covered by satellite broadband networks. The findings presented in this document are based on a detailed spatial analysis of the coverage of broadband customer access networks, along with estimates of their likely performance given known constraints. This analysis uses the available information to measure broadband availability in terms of the infrastructure currently in place. It uses the possible speeds achievable over that infrastructure to measure quality. This methodology was determined after reference to international examples. Overall the analysis found that there are areas of inadequate access to infrastructure across the country—approximately 1.4 million premises (13 per cent) are in areas where fewer than 40 per cent of premises can access a fixed broadband service. The premises in this category are typically located in regional or remote areas of Australia, or in small pockets of poor service in metropolitan and outer metropolitan areas.