Canonical Name

What Does Canonical Name Mean?

Canonical name (CNAME) is a record in the DNS database that indicates the true host name of a computer associated with its aliases. It is essential when running multiple services from a single IP address.

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Techopedia Explains Canonical Name

A canonical name (CNAME) is a properly denoted host name of computers or a network server. CNAMEs specify an alias or nickname for the canonical host name record in domain name systems.

CNAME records are generally defined in RFC 1034. The records within CNAME are handled in the domain name system and have restrictions on their usage. When a domain name system finds a CNAME record while searching for a regular resource record, it restarts the query using the canonical name. The canonical name that a CNAME record points to lies anywhere in the domain name system, even if it is a local or remote server in a different DNS zone. CNAME often refers to the label or left-hand part of a CNAME record.

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Margaret Rouse

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.