Viññāna-tthiti: 'abodes or supports of consciousness'. The texts describe 7 such abodes e.g. A. VII, 41:
1: There are beings who are different in body and different in perception, such as men, some divine beings, and some beings living in states of suffering see: apāya. This is the 1st abode of consciousness.
2: There are beings who are different in body but equal in perception, such as the first-born gods of the Brahmaworld see: deva II. This is the 2nd abode of consciousness.
3: There are beings who are equal in body but different in perception, such as the Radiant Gods ābhassara-deva This is the 3rd abode of consciousness.
4: There are beings who are equal in body and equal in perception, such as the All-illuminating Gods subhakinha-deva This is the 4th abode of consciousness.
5: There are beings... reborn in the sphere of Infinite space. This is the 5th abode of consciousness.
6: There are beings... reborn in the sphere of Infinite consciousness. This is the 6th abode of consciousness.
7: There are beings... reborn in the sphere of nothingness. This is the 7th abode of consciousnes
In D. 33 there are mentioned 4 viññāna-tthiti apparently in the sense of 'bases' of consciousness, namely: materiality, feeling, perception, mental constructions, which in see: XXII, 53 are further explained.
Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.