If you want to open a practice as a "psychic astrologer," with a Ph.D, that you designed this morning on your word processor, there's nothing stopping you, because "psychic astrologer" is not a license-protected occupation -- although you may still have to pay for a business license before you can actually open a practice and collect fees for your services. Generally, these occupations operate according to the Golden Rule; He who has the gold makes the rules.
In any field, a legitimdate earned degree which is recognized by established institutions of higher learning must be offered by the officially recognized accrediting body in your locality, and no other, because diploma mills are very good at forming legitimate-appearing organizations which happily "accredit" each other. Here is a list of all officially accredited post-secondary institutions from the U.S. Department of Education.
Here in New Jersey, there is a woman up the rroad from me who advertises that she has a degree in psychic astrology and hynotizes people to tell them the name of their guardian angel. I once complained about her ro the New Jersey Psychological Association, and I was told that because neither hypnosis nor psychic astrology are regulated by State law, there was nothing that they could do. If there is no State law which refers to them, then they don't exist as far as the State is concerned.
It is no crime to posess an unaccredited degree. The world is awash with them! Caveat emptor: let the buyer beware.