Alias (CNAME) resource records are also sometimes called canonical name resource records. With these records, you can use more than one name to point to a single host, making it easy to do such things as host both a File Transfer Protocol (FTP) server and a Web server on the same computer. For example, the well-known server names (ftp, www) are registered using alias (CNAME) resource records that map to the Domain Name System (DNS) host name, such as server-1, for the server computer that hosts these services