What is a CNAME and what are some of its benefits? For example, how does it differ from A & AAAA records?

  • 1
    Sorry, procotols above the transport layer are explicitly off-topic here, see the help center. Also, your question seriously lacks research.
    – Zac67
    Apr 4 at 10:04
  • 2
    In short, a CNAME is an alias for an existing A or AAAA record. For example, if you have an A record for sftp.domain.com pointing to and you also want ftp.domain.com to point to, but don't want to have 2 records to change down the road, you could create ftp.domain.com as a CNAME instead, and it would point to sftp.domain.com rather pointing to a host IP address itself. Then, if you decide you want sftp.domain.com to point to instead of, you just change that A record and the CNAME will automatically also point to the same destination.
    – Jesse P.
    Apr 4 at 13:42

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