Northwest coast of Borneo (5 latitude north of the equator) is divided into four fields is field brunei-muara field belait temburong field and field tutong.
To the Northwest of Borneo (the Equator North latitude 5) is divided into four districts: Belait district Temburong District Brunei-Muara district and County, Tutong.
north-west of Borneo island (latitude 5 over the equator), The district is divided into four districts Brunei - Muara Belait district district District and Temburong Tutong