A method includes receiving a call routing request at a first distributed mobile architecture (DMA) node from a mobile switching center (MSC). The method includes identifying, at the first DMA node, a DMA node associated with a mobile subscriber device based on information included in a visitor location register (VLR) gateway accessible to the first DMA node. The VLR gateway identifies a set of visiting mobile subscriber devices. The method includes sending a call routing message from the first DMA node to the identified DMA node associated with the mobile subscriber device.