System and method for providing position correction data over a data communications network. In one embodiment, a method includes receiving a request for a mobile device over a data communications network, wherein the request includes a user identification. The method may further include receiving geographic position of the mobile device, selecting a mountpoint based, at least in part, on one or more of the user identification and the geographic location of the mobile device, and transmitting the position correction data to the mobile device over the data communications network.