Examples describe mechanisms for maintaining consistent subscriber data on geo-redundant subscriber databases. In an example, a request to perform an operation related to subscriber data may be received on a subscriber database, wherein the subscriber database may be a geo-redundant deployment of a separate subscriber database. The connectivity status of a synchronization link between the subscriber database and the separate subscriber database may be determined. In response to the determination that the connectivity status of the synchronization link between the subscriber database and the separate subscriber database is disconnected, the request to perform the operation related to the subscriber data on the subscriber database may be denied.