Add a "www" prior to a subdomain?


Is there a method/best practice to adding a “www” prior to my unbounce subdomain URL (

My client currently has their primary site available at, and we’ve published an unbounce page that is available at

My client is concerned that some users may add “www” in front of the subdomain and receive a DNS error. Is there a way to add a www in front of the subdomain?

Any cname, dns info is appreciated!


I also have this issue and am looking for a solution.