8. A system, comprising: one or more memories storing instructions; and one or more processors, coupled to the one or more memories, and configured to execute the instructions stored in the memory in order to: identify a plurality of records associated with a cluster identifier in a local search data repository, where the plurality of records include a first record storing contact information and a plurality of records storing web site addresses; use a web site address stored in at least one of the plurality of records associated with the cluster identifier to obtain candidate contact information if a size of a website that includes the web site address is smaller than a predetermined size, where the size of the web site is determined by a number of web pages for the web site; determine whether the candidate contact information matches the contact information stored in the first record; and store information associated with the cluster identifier with the web site address in a web search index when the candidate contact information matches the contact information stored in the first record.
9. The system of claim 8 , where the information associated with the cluster identifier is the contact information.