Networking4all gives you full control over all the DNS configurations for your domain names. Just logon with your account data to our Control Panel. 

Go to  My domain names and click on the domain name for which you want to create a CNAME-record.

In the Domain Overview click on the tab DNS and you will see the current DNS settings and A-records for your domain.  
Look at the bottom to add a new record. In this case select CNAME under Type.
See the screenshot below, here we add a wildcard CNAME-record for the domain hieruwdomeinnaam.nl.

Leave the field Priority blank (no value). After you save your CNAME record it can take up to 48 hours before your CNAME-record will be activated. 

Note! Host and Content always has to end with a . (period)!

For more explanation about CNAME-records, click here.