No, it does not.
The premium version of the portfolio includes the option to use your own personal domain name with your portfolio instead of using one of our offered subdomains. However, you will need to obtain this domain name from a registrar on your own as this is not part of the subscription package. DeviantArt cannot assist you with this process.
Please refer to the following FAQ entries to learn how to use a domain name which you already own with your premium portfolio: