Area Code 59 – Temburong

Geographic Coverage and Administrative Context

The +673 59 numbering block is a geographic allocation within Brunei Darussalam's national numbering plan, serving the Temburong District. Temburong is the country's easternmost exclave, separated from the main Brunei-Muara and Belait districts by the Brunei Bay and the Malaysian state of Sarawak. The district's administrative center is Bangar, a small town along the Temburong River, which acts as the primary hub for government services and local commerce. The prefix 59 is used for fixed-line services within this district, including both residential and business lines in Bangar and surrounding villages such as Labu Estate, Senukoh, and Batu Apoi.

Dialing Formats and Number Structure

Brunei's national numbering plan follows ITU-T E.164 recommendations, with a full international number comprising the country code +673 followed by a seven-digit subscriber number. For geographic numbers, the first two digits typically represent the district or exchange area. In the case of Temburong, the prefix 59 is followed by a five-digit subscriber number, making the complete national significant number (NSN) seven digits long.

When dialing within Brunei, callers from other districts (e.g., Brunei-Muara or Belait) must dial the full seven-digit number including the 59 prefix. Local calls within Temburong may be made using the seven-digit number directly, though some older exchanges may still support six-digit local dialing; however, the standard format is now seven digits. International callers should dial +673 59XX XXX, replacing the 'X' characters with the actual subscriber digits. For example, a typical Temburong fixed-line number would be formatted as +673 591 2345.

Overlay and Numbering Plan Considerations

Brunei's numbering plan does not currently employ area code overlays; each geographic area retains a distinct prefix. The 59 prefix is exclusively assigned to Temburong, and no overlay codes have been introduced. This simplifies dialing procedures: callers do not need to add an extra digit or use a different prefix when calling Temburong numbers from other districts. However, as Brunei continues to develop its telecommunications infrastructure, the regulatory authority (AITI) periodically reviews numbering resources to ensure efficient allocation. Future changes could include renumbering or the introduction of new services, but as of now, the 59 prefix remains dedicated to Temburong's fixed-line services.

Caller Instructions

For local callers within Brunei: dial the seven-digit number directly (e.g., 591 2345). For international callers: dial your country's international access code (e.g., 00 from most countries, or + from mobile phones), then Brunei's country code 673, followed by the seven-digit number (e.g., +673 591 2345). Ensure you omit any leading '0' that might be used in domestic dialing; Brunei does not use a trunk prefix, so the number is dialed as +673 591 2345.