Area Code 57 – Temburong
The phone area code for Temburong is 57 (international format +67357). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Temburong
Geographic Overview
The +673 57 area code is a geographic National Destination Code (NDC) assigned to the Temburong District, the eastern exclave of Brunei Darussalam. Temburong is separated from the main western part of the country by the Brunei Bay and the Malaysian state of Sarawak. The district is known for its pristine rainforests, including the Ulu Temburong National Park, and its administrative center is Bangar, the largest town. Other notable settlements include Labu, Senukoh, and Batu Apoi.
Dialing Formats
Within Brunei, calls to Temburong numbers require dialing the trunk prefix 0 followed by the area code and the subscriber number. The national significant number (NSN) for geographic numbers in Brunei is 7 digits, with the area code being the first two digits. Therefore, a typical Temburong landline number is formatted as:
- Local dialing (within Brunei): 0 57 XXX XXX
- International dialing (from abroad): +673 57 XXX XXX
For example, if a subscriber number is 123 456, a caller from within Brunei would dial 057 123 456, while an international caller would dial +673 57 123 456.
Caller Instructions
For local callers: Always include the leading 0 when dialing from a different district or mobile phone. When calling from a landline within the same district, the 0 and area code may be omitted, but it is safer to include them as per the national dialing plan.
For international callers: Replace the trunk prefix 0 with the Brunei country code +673. Do not include any additional leading zeros after the country code.
Administrative and Regulatory Notes
The numbering plan for Brunei is administered by the Authority for Info-communications Technology Industry of Brunei Darussalam (AITI). Geographic area codes are allocated based on administrative districts. Temburong, being the smallest and least populated district, has a limited number of assigned subscriber lines. The code 57 is exclusively used for fixed-line services in this region. There are currently no overlay codes or 8-digit numbers in use for geographic areas; the 7-digit NSN structure is standard.
For callers using VoIP or mobile services, the same international format applies. Ensure that your service provider supports calls to Brunei and that you have the correct international prefix for your country (e.g., 011 from the US, 00 from most European countries).