This article draws from recent work by the authors on high-speed broadband and Australia's National Broadband Network (NBN) to critically engage with and extend theories of media ecologies. The argument of this paper is that the media ecology approach is a valuable framework for making sense of such a large-scale infrastructure project as the NBN, but that, equally, due to its scaled nature, the NBN leads to a reconceptualised understanding of media ecologies as operating at three different levels: national, local (at the level of the suburb or town), and within the household.