1. A method of associating region information with a document, the method comprising the steps of: determining whether a top-level domain indicated in a Uniform Resource Locator (URL) of a host is a national regional domain; and in response to determining that the top-level domain of the host is not a national regional domain: (a) determining which particular national regions said host is associated with based on factors other than said top-level domain, and (b) associating the document with at least one of said particular national regions; wherein the top-level domain is a suffix that follows a last period in a host name of the host in the URL.