Area Code 55 – Temburong

Geographic Coverage and Administrative Context

The +673 55 prefix is the geographic National Destination Code (NDC) assigned to the Temburong District, the easternmost 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's administrative center is Bangar, which serves as the primary hub for government services and commerce. The code covers the entire district, including the town of Bangar and surrounding villages such as Labu Estate, Senukoh, and the Ulu Temburong National Park area. As a geographic code, it is used exclusively for fixed-line PSTN services within this jurisdiction.

Dialing Formats and Instructions

For callers within Brunei, the national dialing format requires the leading trunk prefix '0' before the NDC. Thus, a local call to a Temburong fixed line would be dialed as: 0 55 XXX XXX. Note that the total number of subscriber digits after the NDC is seven, making the complete national significant number (NSN) eight digits (including the NDC). For international callers, the trunk prefix is omitted, and the country code +673 is used. The international format is: +673 55 XXX XXX. For example, a number in Bangar might be +673 55 123 456. When dialing from a mobile phone, the same international format applies, but the leading '+' is often replaced with the local international access code (e.g., 00 or 011) depending on the originating country.

Overlay and Numbering Considerations

Brunei's numbering plan is closed, and no overlay codes are currently in effect for Temburong. The 55 prefix is unique to this district, and there are no plans for an overlay as the numbering capacity is sufficient. All fixed-line numbers in Brunei are seven digits long after the NDC, and the entire country uses a uniform numbering structure. Callers should note that while Temburong is geographically separated, calls from the main Brunei-Muara district are treated as domestic calls and do not incur international charges.

Practical Guidance for Callers

For local callers within Brunei, simply dial 0 55 XXX XXX. For international callers, dial your country's exit code, then 673 55 XXX XXX. If you are in a country that uses the '+' notation, you can dial +673 55 XXX XXX directly from mobile phones. Always verify the subscriber number length, as some older lines may have fewer digits; however, the standard format is consistent. For businesses or individuals in Temburong, ensuring that your number is correctly listed in international directories with the +673 country code is essential for global reachability.