CNAME or Canonical name records, map your hostname to another hostname.
CNAME records are useful for pointing hostnames to the same place and updating them easily. They are also often used for validating domain ownership.
Here is an example of a CNAME record:
Hostname: www.noip.com Target: noip.com
The CNAME is www.noip.com and it points to noip.com, the domains are different but they still go to the same place (The IP address of noip.com) and follow the same DNS rules that are in place.
Please note that we not support the CNAME at the root domain level (ANAME or Apex CNAME).
How to add a CNAME Record
From your No-IP account, click My Services at the left, then DNS Records. Next, click Add A Hostname.
Type a hostname and select DNS Alias (CNAME) from the “Hostname Type” section.
This will display a field for the target hostname. The target must be another host or domain name.
When finished, click the Add Hostname button to create the CNAME record.
If the entries under Hostname or Target are long, or begin with an underscore character “_”, you may need to contact support to have the records created.