Brunei (kxd-kxd) = 3 (Wider communication). De facto national working language. Originated and used as trade language in the archipelago of the Brunei sultanate centuries before British protectorate (1888–1984). Used as lingua franca between ethnic groups, widely used by young people.
Glottolog
[kxd] at ISO 639-3
[kxd] at OLAC
[kxd] at IMTVault
Wikidata
Wikipedia