1. A method for Uniform Resource Locator (URL) address search in a URL search apparatus maintaining a URL list, the method comprising: receiving a connection request containing URL address information from a user; identifying tables that are generated according to characters constituting URL address information in the URL list and lengths of character strings serving as URL address information in the URL list; and performing a URL search by checking whether the URL address information contained in the connection request is present in the URL list on the basis of the identified tables.