A system and method for allocating an interval to each of multiple locations within a network topology, where each interval indicates a range of Internet Protocol (IP) addresses associated with the corresponding location. Each allocated interval is associated with a computing service that provides information about network services near the location associated with the allocated interval. The intervals are allocated into intermediate nodes, where each intermediate node includes at least two of the intervals. The intervals, associated computing services, and intermediate nodes are then organized into a modified B+ tree structure that facilitates the discovery of one of the network services near the allocated interval.