If you have only one account associated with your My Cincinnati Bell login, then that is your default account.
If you have more than one account associated with your login, then you can select one of them as the default so that when you log in, the system will automatically switch to viewing your default account.
To manage Associated Accounts, simply go to My Profile, then Manage Associated Accounts. From this screen, you may add, remove, set default or nickname accounts so that they are all easily accessible from your single My Cincinnati Bell login. When you associate more than one account in the list shown, you can easily switch to view each account from the 'Select Account' drop down on main navigation bar.
How do I log into My Cincinnati Bell?
How do I create a My Cincinnati Bell account?