How to dial a phone number in Temburong Brunei?
From outside Brunei, a caller would dial their international call prefix (typically 00 in Europe and 011 in North America), followed by 673 (the country code for
Brunei), then 5 the 2-3 digit area code of the place you're calling (Temburong) minus the trunk code '0', and finally the local number minus the trunk code '0'. All local telephone numbers dialled within Brunei must use the leading '0' and the area phone code, even when calling locally.