A Unified Data Repository (UDR) proxy obtains first subscriber data from a first UDR of a first network operator, second subscriber data from a second UDR of a second network operator, and third subscriber data from a third UDR of an enterprise. The UDR proxy stores the first subscriber data, the second subscriber data, and the third subscriber data locally. The UDR proxy obtains a request to access a network asset that is accessible through the first network operator. Based on the first subscriber data, the second subscriber data, and the third subscriber data stored locally, the UDR proxy attempts to determine whether the request to access the network asset is authorized to access the network asset. In response to determining that the request to access the network asset is authorized, the UDR proxy permits access to the network asset.