A multi-tenant management service (MTMS) can be configured to receive a plurality of requests for a multi-tenant service from a plurality of tenants. A given and another of the plurality of tenants can have a resource object (RO) with the same dialable number (DN) assigned thereto. The MTMS can also be configured to generate a federated dial plan for each of the plurality of tenants. Each federated dial plan can include a system identifier (ID) and a corresponding DN for each RO associated a respective tenant. The MTMS can further be configured to provide a federated DN corresponding to the multi-tenant service to each of the plurality of tenants.