Satellite dish owner unknown

You will have to ask your neighbors. There is not identification on the dish tying it to a specific account. Even if there was, DirecTV will not disclose somebody else's private account information to you.

By Federal regulations, everybody may have satellite service. Though if there is shared property, it should be installed in an area that is under their direct control (for example a patio or balcony). See OTARD for more details.