The directory path where the ISP stores its customers Web pages is called the ISP Client Directory Path 116. This data is initially created manually for a few local ISPs (seed ISPs). This path is identified automatically 335 by searching for the given domain name in the Root URL database 119 and finding common directory paths 340, as shown in FIG. 3C. If no match is found 350, then it is processed at a later iteration 245. Matching paths 345 point to the ISPs Client Directory Path. This process improves over subsequent iterations when enough data is gathered and patterns can be recognized from a large set of ISP Web Servers.