Yahoo Information
Inlink data: The Inlink Data service allows you to retrieve information about the pages linking to a particular page or pages within a domain. Showing below the number of URLs in the database that link to the domain or page
Indexed data: The Page Data service allows you to retrieve information about the subpages in a domain or beneath a path that exist within the Yahoo! index. Showing below the number of URLs in the database that are part of the domain.