Abstract: A multi-level hosted inbound administration platform for a packet-switched telephony system is provided. The platform provides services for managing the distribution and features of direct inward dialing numbers (DIDs). The platform allows a client to import or purchase DIDs, make DIDs available to sub-distributors, and provision them to end-users. The platform allows sub-distributors to reserve and activate DIDs, make DIDs available to downstream sub-distributors, and provision them to end-users. The platform provides a billing structure for DID usage, with charges being applied on a one-time, monthly, or variable basis. The platform also allows clients and sub-distributors to charge for inbound services based on per-minute or per-usage charges.