Domains »Domains Settings
You can make changes to your domains in the My Domains page.
Getting a Custom Domain
If you’d like to replace your site’s WordPress.com address (such as yourgroovysite.wordpress.com) with a custom domain name, please see the Add a Domain page.
Changing Your Primary Domain
You can switch back and forth between your custom domain and your default .wordpress.com URL by updating your primary domain. To do so, check the desired domain in the Primary column, and click on Update Primary Domain.
Renewing or Canceling a Domain
If you are trying to renew or cancel a domain you can do so on the My Upgrades page.
By clicking on the Edit button on your Domain Settings page, you can add custom DNS records to your domain.
You can manage contact information for your domain, control what servers your domain points to, and transfer your domain to another registrar by clicking the Edit button.