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A canonical name (Cname) record is used when running multiple services, like an FTP and a webserver, from a single IP address. The Cname is a resource record in the Domain Name System (DNS) that specifies that the domain name is an alias of another. Using a Cname allows each service to have its own entry in the DNS (i.e. and Another example would be running a mail server and website off the same IP ( and where “” is a Cname.