NBN and ADSL2+ Broadband Exchange Information - Search and compare broadband Internet plans for NBN, ADSL, ADSL2, Naked DSL. ADSL2+ Broadband Guide for Australians. Find out what broadband is available to you. This site even has a telephone exchange locator. Scroll around the map to find your nearest telephone exchange. Click on the results for details of the ADSL2+ providers in your exchange