We own a domain, for example test.com.au
They have current A record that point www.test.com.au to a IP.
My client has requested to change the name servers of (example) www.test.com.au to different name servers but not to change the name servers for test.com.au, when I try add www.test.com.au into cloud flare it doesn’t want to add the site.
From my understanding there are no name servers for www.test.com.au they can only be A or CNAME records etc.
Is anyone able to give me incite on how I can set the name servers for www.test.com.au