Prefix 4 in Brunei
Data for prefix 4 as published in Brunei's official numbering plan — the original allocation, not any specific number's current carrier, since numbers can be ported.
- Carrier (original allocation)
- —
- Line type
- Landline
- Region
- Tutong
- Example format
- +673 4XX XXXX
Indexed numbers
No indexed numbers for this prefix yet.