CNAME records make your DNS data easier to manage. If you change the IP address of an A record, all CNAME records pointed to that A record automatically follow the new IP address. The alternative solution would be to create multiple A records but is not as simple as using CNAME records.

A CNAME (Alias) record points to an A record. You can create multiple CNAME records and point them to an A record. The most common  CNAME records are the subdomains www and ftp.

To setup a CNAME record you would need to login to your control panel first and follow these steps:

– Select the “Advanced Zone Editor”

– You will notice at the top of the new page that there is a section to add your DNS record. Change the type to “CNAME” and fill in the required fields.

Name will be what you decide to call your record.

You can keep the TTL (time to live) the same as the others that has already been created if you were not given one.

CNAME will be the record that you are pointing your subdomain to.

Once you added the necessary information, click on the “Add Record” button to save.

Below are examples of what the CNAME record will look like:

pop.example.co.za / smtp.example.co.za / imap.example.co.za points to mail.example.co.za.

If you are replacing an existing record then you need to allow for the cached records to expire, based on the TTL of the record in question.

If this is a new record, no caching could have occurred so the new record should resolve immediately.