A wireless user device is served by a wireless network that performs Network Address Translation (NAT). The wireless user device exchanges user data using a device IP address and a network gateway exchanges the user data with external systems using an external IP address. The user device receives network information that indicates a network server and queries the network server for IP address translation data. The user device receives the IP address translation data from the network server that indicates that the external IP address is associated with the device IP address for the wireless user device. The user device transfers content delivery footprint data to a content delivery network. The content delivery footprint data indicates media content stored on the user device and indicates that the external IP address is associated with the device IP address for the user device.