Area Code 221 – Brunei Muara

Overview of Brunei Area Code 221

Area code 221 is a geographic destination code assigned to the Brunei Muara District, the smallest but most populous district in Brunei Darussalam. This district is the administrative and economic heart of the country, containing the capital city, Bandar Seri Begawan, as well as major commercial and residential areas. The code 221 is used for fixed-line telephone services within this region, connecting subscribers to the PSTN (Public Switched Telephone Network).

Geographic Coverage and Administrative Jurisdiction

The Brunei Muara District is one of four districts (daerah) in Brunei, and it is the primary hub for government, finance, and commerce. The 221 prefix covers the central and southern parts of Bandar Seri Begawan, including areas such as Kianggeh, Berakas, and Gadong. It is important to note that Brunei uses a closed dialing plan, meaning the full national number (including the area code) is always dialed, even for local calls within the same district.

Dialing Formats and Instructions

Brunei's national numbering plan follows ITU-T E.164, with a country calling code of +673. The national significant number (NSN) is 7 digits long, and the area code is the first digit(s) of the NSN. For the 221 area code, the NSN format is 221 XXXX (where XXXX is the subscriber number), making the full international format +673 221 XXXX.

• Local calls (within Brunei): Dial the full 7-digit number, e.g., 221 1234. Do not add a trunk prefix (such as '0') because Brunei does not use one.
• International calls from abroad: Dial the international access prefix (e.g., 00 or +), then the country code 673, followed by the 7-digit number, e.g., +673 221 1234.
• Calls from Brunei to another country: Dial the international prefix (00) followed by the country code and the local number.

Overlay and Numbering Considerations

Brunei does not currently have overlay area codes in the traditional sense. The numbering plan is managed by the Authority for Info-communications Technology Industry (AITI). The 221 code is exclusively used for fixed-line services in Brunei Muara. Mobile numbers in Brunei are non-geographic and begin with 7 or 8 (e.g., 7123456). When dialing a fixed line from a mobile phone, the same 7-digit number is used.

Caller Instructions

For callers within Brunei, simply dial the 7-digit number. For international callers, ensure you use the correct exit code for your country (e.g., 011 from the US, 00 from most European countries) followed by 673 and the number. Always omit any leading '0' that might appear in local directories, as Brunei numbers do not include a trunk prefix.