Abstract: Systems and methods are provided for more efficient and robust virtual network provision and operating capabilities and functionality. Multiple network management domains (NMDs) are configured within a network management system (NMS), wherein each NMD is associated with a virtual communications network (VCN) provisioned within a host communications network (HCN). A plurality of outroute partitions and inroute partitions are respectively configured via outroute and inroute network elements of the HCN, wherein each outroute/inroute partition supports respective levels of outroute/inroute capacity. The outroute partitions and inroute partitions are respectively allocated VCNs to provide fixed levels of outroute/inroute capacity to the respective VCNs. Operator classifications are configured within the NMD for specifying respective sets of network operator capabilities and permissions allocated respective operators of the respective VCNs.