is.edu requires a new domain name to set their subdomain as domain alias to it.
It means if I want to get marketing.is.edu, I need to register a domain name example.com and then they can CNAME the marketing.is.edu to example.com.
So I can use the .EDU free subdomain from them. I want to know if there is any method without registering a new domain? Because It looks registering a new domain is unnecessary and they should be able to set the CNAME from subdomain to another subdomain.
Please tell me how its possible?