LocationWest Kalimantan province: Kapuas Hulu regency, Nanga Katungau north to Sarawak border on middle Kapuas river, east of Mount Betung to Udjungumbut, west to Sebangkung town; Sintang regency, lower Kapuas south bank.
DialectsBatang Lupar, Bugau, Kantu’ (Kantuk), Ketungau (Air Tabun, Banjur, Demam, Maung, Sebaru’, Sekapat, Seklau, Sesat, Sigarau), Desa.