A CNAME (Canonical Name) record is an "alias" record. It specifies that one domain is a synonym for another.

Usage:

CNAME is most commonly used for subdomains (e.g., blog.domain.com) to ensure they always point to the same server as the main domain, even if its IP address changes.

Important: CNAME records cannot be used for the root domain (@), only for subdomains.

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