Brunei ISO Codes: BN, BRN, 096, and .bn Explained

Brunei ISO codes are used to identify Brunei Darussalam in forms, databases, international records, and technical systems. The main ISO 3166-1 values are BN, BRN, and 096, with each format serving a different type of field. Brunei also has the .bn internet domain, but this is a domain suffix rather than an ISO data value. This guide separates these identifiers from Brunei’s Olympic code, telephone prefix, and currency code.

Brunei ISO Codes at a Glance

The country name used in the ISO standard is Brunei Darussalam. Select the code format that matches the label or documentation of the system you are using.

Use the field label, not just the country name, to choose a value. If a form says ISO 3166-1 alpha-2, enter BN; if it says alpha-3, enter BRN; if it says numeric, enter 096. A request for a country abbreviation is ambiguous, so the surrounding documentation should clarify whether the system means ISO, IOC, telephone, or currency data.

The Three ISO 3166-1 Codes for Brunei

Brunei Darussalam has three ISO 3166-1 country identifiers: BN for alpha-2, BRN for alpha-3, and 096 for the numeric code. These are different representations of the same country in the ISO country-code framework. A published ISO Country Codes reference provides a country-code list, while current system integrations should use the maintained list required by that system.

Keep the leading zero in 096. It is a three-digit ISO identifier, not the number 96. Maintained standards lists are the appropriate reference when a system requires a current country-code value.

What Each Brunei ISO Code Means

The three ISO formats are related, but they are not interchangeable. A form designed for two letters will normally reject or misread a three-letter or numeric value.

BN: Brunei's ISO Alpha-2 Code

BN is Brunei Darussalam’s ISO 3166-1 alpha-2 code, also called the Brunei two-letter country code. It is the compact format commonly used in country selectors, database columns, localization settings, and data exchange fields. For example, a record may contain country_code: BN.

Alpha-2 codes also have a close relationship with country-code top-level domains. That relationship does not turn BN itself into a web address: BN is the ISO identifier, while .bn is a DNS suffix. BN is also not Brunei’s telephone prefix and not its currency code.

BRN: Brunei's ISO Alpha-3 Code

BRN is Brunei Darussalam’s ISO 3166-1 alpha-3 code, or Brunei three-letter country code. Its longer form is often easier for people to recognize than BN, while still remaining standardized for systems that support ISO alpha-3 values.

You may encounter BRN in international datasets, travel-related records, reporting tools, and machine-readable identification contexts. However, a system’s own field rules determine whether it expects BRN, BN, or another identifier. Do not assume that every API, document, or database accepts the alpha-3 format.

096: Brunei's ISO Numeric Code

096 is Brunei Darussalam’s ISO 3166-1 numeric code. Numeric country codes can be useful where systems need a language-neutral identifier and should not depend on a country’s spelling in a particular language.

The value must be written as 096 when the field expects the ISO three-digit format. In data exports, preserve 096 as text or apply a three-digit display format; otherwise, software that treats it as an ordinary number may turn it into 96. That change can break exact matching against an ISO list. It is unrelated to 673, Brunei’s international telephone country code. One belongs to ISO 3166-1 country identification; the other belongs to telecommunications numbering.

Brunei's Internet Domain: .bn

Brunei’s country-code top-level domain is .bn. It is the country-associated suffix used in internet domain names, rather than a value for a general country-code field.

How BN Relates to the .bn Country-Code Domain

The .bn country-code top-level domain is closely associated with the ISO alpha-2 value BN. This is why the letters match, but their functions remain different: BN identifies Brunei in ISO country data, while .bn identifies a DNS domain space. The IANA Root Zone Database identifies country-code top-level domains in the global DNS root.

For example, a country field can contain BN, whereas a Brunei-focused website may use an address ending in .bn. A website containing the letters “bn” elsewhere in its name is not necessarily related to Brunei or to the .bn domain.

BNNIC and Brunei's Local Domain Namespace

The Brunei Darussalam Network Information Centre, known as BNNIC, is associated with the registration, administration, and approval of Brunei domain names. The BNNIC information published by Brunei’s Authority for Info-communications Technology Industry identifies .bn and examples including .com.bn and .edu.bn.

How to register a domain name in Brunei (.bn)

These examples are second-level namespaces and should not be treated as a complete list of available domain categories. Before applying for a .bn domain, check BNNIC’s current registration requirements, domain categories, and approval process.

Brunei Codes from Other Standards

Several valid identifiers can refer to Brunei, but they come from separate standards. Correct labeling prevents errors when combining sports, communications, finance, web, and country datasets.

BRU: Brunei's Olympic Code

BRU is used for Brunei in the Olympic or IOC country-code context. It is not Brunei’s ISO 3166-1 alpha-3 code. The direct comparison is: ISO alpha-3: BRN; Olympic code: BRU.

This difference matters when sports results are joined to a general international country dataset. Such work needs a clear mapping between the two code systems rather than treating BRU as a general replacement for BN or BRN. The listed IOC Country Codes provide BRU in the Olympic context.

The Calling Code +673 and Currency Code BND

+673 is Brunei’s international telephone country code. It is used when placing an international call to a Brunei number and is not an ISO 3166 country code. BND, meanwhile, is the ISO 4217 currency code for the Brunei dollar.

Store country, telephone, and currency values in separately labeled fields. Do not use 096 as a telephone prefix, +673 as an ISO numeric code, or BND as a country code. The ISO 4217 Currency Codes list BND for the Brunei dollar.

How to Use Brunei Codes Correctly

The correct Brunei ISO code depends on the task, not on which value is easiest to remember. Read the field name and technical documentation before entering a code.

Choose the Code Based on the Task

Use this quick guide when selecting a Brunei code for a form, dataset, or technical configuration.

For example, a checkout or registration record might keep country_iso2=BN, country_iso3=BRN, country_iso_numeric=096, phone_country_code=+673, and currency=BND as separate values. The exact field names are application-specific; the important point is that one value should not be silently copied into another field. If an integration accepts only one format, convert explicitly and document the source and destination standards.

When integrating more than one dataset, maintain an explicit mapping table with the standard named in each column. This avoids accidental substitutions between ISO, IOC, telephone, currency, and DNS values.

Common Mix-Ups and a Verification Checklist

The most common mistakes are confusing BRN with BRU, treating 096 as if it were +673, using BND where a country code is required, or entering .bn in an ISO field.

• Check whether the field requests ISO 3166-1 alpha-2, alpha-3, or numeric data.
• Use BRU only where Olympic or IOC code data is requested.
• Use +673 only for international telephone dialing.
• Use BND only for the Brunei dollar currency code.
• Use .bn only in a domain-name context.
• Preserve the zero in 096 when three-digit ISO numeric formatting is required.

Before entering BN, BRN, 096, BRU, +673, or BND, confirm which standard the form or system requires. For technical deployments, registrations, and published documentation, consult the responsible standard or registry information rather than relying on a similarly named code from another system.

Conclusion

Brunei Darussalam’s ISO 3166-1 codes are BN, BRN, and 096. Its country-code domain is .bn, while BRU, +673, and BND belong to Olympic, telephone, and currency systems respectively. Matching the value to the requested standard keeps records, communications, and technical settings accurate.