Area Code 225 – Brunei Muara

Overview of Brunei +673 225

The country calling code +673 is assigned to Brunei Darussalam under the ITU-T E.164 international numbering plan. Within Brunei, the prefix 225 is a geographic area code that routes calls to the Brunei Muara District, the smallest but most populous district in the country. This district serves as the administrative and economic heart of Brunei, encompassing the capital city, Bandar Seri Begawan, and its surrounding suburbs. The 225 code is used for fixed-line (PSTN) services within this area.

Geographic Coverage and Administrative Jurisdiction

Brunei Muara District is one of four districts in Brunei and includes key locations such as:

• Bandar Seri Begawan (the capital)
• Kampong Ayer (the famous water village)
• Mukims such as Berakas, Gadong, and Kianggeh

The 225 prefix is allocated to subscribers within this district, and calls to numbers beginning with 225 are terminated on fixed-line networks operated by the national telecommunications provider, UNN (Unified National Networks).

Dialing Formats

To call a Brunei Muara fixed-line number with the prefix 225, you must follow the appropriate dialing format depending on your location.

• International format (from outside Brunei): Dial the international access code (e.g., 00 or +), then the country code 673, followed by the subscriber number. For example, a local number 225 1234 would be dialed as +673 225 1234.
• Domestic format (within Brunei): Dial the 7-digit subscriber number directly, including the area code. For example, 225 1234.

Note that Brunei uses a closed numbering plan, meaning that the area code is always included in the local dialing, even for calls within the same district. There is no trunk prefix (like '0' in many countries) used when dialing domestically.

Caller Instructions

• For international callers: Replace the international access code with the plus sign (+) when using a mobile phone. Ensure you have the correct country code and the full subscriber number. For example, to call a number in Bandar Seri Begawan, you would dial +673 225 1234.
• For local callers: Simply dial the 7-digit number. For example, if you are in Brunei and wish to call a fixed line in Brunei Muara, dial 225 1234.

Overlay Considerations

Currently, there are no overlay codes for the Brunei Muara area; the 225 prefix is unique to this district. However, as Brunei's telecommunications infrastructure evolves, future number expansions may introduce additional area codes. Always verify the correct prefix when making calls to ensure accurate routing.

Understanding the correct dialing procedures for Brunei Muara ensures efficient and error-free communication with businesses and residents in this key economic region.