The Abyss - Acheron - Arborea - Arcadia - Baator - Beastlands - Carceri - Gehenna -  Gray Waste - Mehcanus -  The Outlands - Pandemonium -

ETHEREAL

All information here is unofficial but has been recieved from reliable sources, including AD&D manuals, Nationally contributed science based doctrine, and other forms of RPG.