Can I add a CNAME to just the domain by itself?
You can add a CNAME to just the domain, but it generally is not a good idea. It will disable your ablity to get email, since the CNAME will be the only record that can be server. This is a requirement of the design of DNS.See Also:
What is DNS and how to set up Direct DNS Pro or Direct DNS Basic?
What is a host, host name and host record?
What are A, AAAA, MX, CNAME, SRV and TXT (SPF) records?
Do you offer Round-Robin distribution?
Why does my domain still points to the old IP after I changed my host record?
Do you offer Dynamic DNS service?
Why can't Direct DNS provide reverse lookups?
How to set up my domain A, CNAME or MX record?
Why would I want to set up CNAMEs instead of A records?
Can I use Directnic email service along with Direct DNS?
I set mydomain.com and mail.mydomain.com as mail servers, but my mails bounced. Why?
Will Directnic mail servers relay mail to my mail server?
How do I renew the Direct DNS service for my domain?
When I use Direct DNS, is my domain hosted on multiple (redundant) servers or just one?
How often are your DNS servers updated with changes I make via your website?
Will your servers allow other servers to slave/zone transfer my domain from it?
Why can't I use a private IP address?
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