Nusa Tenggara Timur Province; Sumba island, eastern half.
Kambera, Kanatang, Lewa, Mangili-Waijelo (Rindi, Wai Jilu, Waidjelu, Waijelo), Melolo, Southern Sumba, Uma Ratu Nggai (Umbu Ratu Nggai). Dialect network. Kambera dialect is widely understood. Lewa and Uma Ratu Nggai dialects have difficulty understanding those from Mangili.
Latin script [Latn].
Christian, traditional religion.