An addressing scheme enables mobile web-service providing devices located within private address domains to be contacted by other devices located on the same LAN segment regardless of whether or not the two devices are located in the same private IP address domain, providing a working network path can be identified directly or indirectly between the two devices. In this way, if a device-label (such as a telephone number which is associable with an addressed device) is provided by an addressing device to an addressing server, the server is able to resolve the device-label to a private address via which the addressing device can contacted. The private address is utilized by the web-browser application to seamlessly and transparently obtain a requested web-service from the addressed device using any suitable communications channel, e.g. WiFI, Bluetooth, etc, that provides a working path between the two devices.