PluSHS allows you to resolve the names of a direction or a rank of direction's IP, allowing you to maintain a "map" of the names that it has assigned to each host that comprises a certain network.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.