Bandwidth and/or Quality of Service (QoS) may be modified in a Regional/Access Network (RAN) that includes a core network, the RAN facilitating differentiated end-to-end data transport between an enterprise, a Network Service Provider (NSP), and/or an Application Service Provider (ASP) and a customer Premises Network (CPN). Application Programming Interface (API) calls are used at the enterprise, NSP, and/or the ASP to communicate with the RAN to query a resource allocation in the core network that is assigned to the enterprise, NSP, and/or the ASP. API calls are also used at the enterprise, NSP, and/or the ASP to communicate with the RAN to modify the bandwidth and/or the QoS of the resource allocation in the core network that is assigned to the enterprise, NSP, and/or the ASP.