https://learn.microsoft.com/en-us/dotnet/api/microsoft.azure.documents.databaseaccount.readablelocations?view=azure-dotnet
DatabaseAccount.ReadableLocations Property (Microsoft.Azure.Documents) - Azure for .NET Developers...
Gets the list of locations reprsenting the readable regions of this database account from the Azure Cosmos DB service.
microsoft azurepropertydocumentsdevelopers