Yeah, there is a fine line there you are probably sitting right on top of right now. This is the part of the AUP that should be checked into:
You agree that the Lunarpages servers including the space occupied by your account is and remains the property of Lunarpages. Your limited license to use the service is not subject to lease, sublease or any other sharing or transfer without the specific, express consent of Lunarpages. You may not make your account (including but not limited to web space, email accounts, bandwidth, storage space, or reseller rights) available to any third party in any way, including but not limited to the use of Sub Domains, Add-on Domains, Sub Directories, or by any other means.
I would suggest contacting
support@lunarpages.com if you wanted somebody to review the situation, details and give you an official ruling on the issue.