A device may receive relationship information indicating a relationship between first geographic information and a network gateway. The network gateway may be associated with providing a user device with access to a network. The device may store the relationship information. The device may receive, from the user device and via a base station, second geographic information indicating a tracking area in which the user device is located. The device may identify one or more network gateways, associated with the second geographic information, based on the second geographic information and the relationship information. The device may provide, to the user device, one or more device identifiers associated with the one or more network gateways to permit the user device to access the network via the one or more network gateways. The one or more device identifiers may be provided in association with a non-access stratum message.