I am trying to point a domain of
support.example.com to a public IP address and am not sure how I can achieve this. I have tried a CNAME record but I understand that it's not possible to direct a CNAME to an IP address.
Can anyone help?
You will have to add an A record. To point a sub domain, access the zone file for domain.com and add the A record for support to point to a IP address. Instead of using the CNAME record, use A record. The entry should look like below.
support 14400 IN A xx.xx.xx.xx
Replace xx.xx.xx.xx with actual server IP.
You can set a A record from the registrar panel as well.
If you are using the Name servers that point to your server, you have to add the A record from the server. If the Name servers are that provided by the registrar, you have to do it from the registrar panel.