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Brunei Phone Numbers: Format, Area Code & Validation Guide

Explore Brunei (+673) phone number formats: landline (7 digits, 2/3 prefix), mobile (7-8 digits, 7/8 prefix). Includes regex for validation (/^[23]\d{6}$/). Covers dialing & ITU-T E.164.

Phone number standards3 min read

Quick Reference

  • Country: Brunei Darussalam
  • Country Code: +673
  • International Prefix: 00
  • National Prefix: None

Overview

Discover the comprehensive details of Brunei Darussalam's telephone numbering system. This guide is essential for telecom professionals, developers, and businesses interacting with Brunei Darussalam, covering number structures, dialing procedures, and more.

Number Formats

General Number Structure

Brunei Darussalam uses a closed numbering plan with fixed-length numbers:

  • Country Code: +673
  • Subscriber Number Length: 7 or 8 digits, depending on the service type

Landline Numbers

Landline numbers are 7 digits long, starting with '2' or '3':

  • Format: [2-3]XXXXXX
  • Example: 2234567

Regular Expression:

Regex
/^[23]\d{6}$/

Mobile Numbers

Mobile numbers range from 7 to 8 digits, typically starting with '7', '8', or '9':

  • Format: [78]XXXXXXX
  • Example: 81234567

Regular Expression:

Regex
/^[78]\d{6,7}$/

Special Service Numbers

These numbers are shorter, used for emergencies and customer support:

  • Emergency Numbers: 3 digits (e.g., 991)
  • Premium Rate Numbers: Start with '1', 4 to 5 digits long

Regular Expression:

Regex
/^1\d{3,4}$/

Comprehensive Number Format Table

Type of NumberLengthStarting Digit(s)ExampleRegular Expression
Landline7 digits2, 32234567/^[23]\d{6}$/
Mobile7-8 digits7, 881234567/^[78]\d{6,7}$/
Emergency Services3 digits9991/^9\d{2}$/
Premium Rate4-5 digits112345/^1\d{3,4}$/

Dialing Procedures

Domestic Calls

  • Landline to Landline: Dial the 7-digit number directly.
  • Landline to Mobile: Dial the 7- or 8-digit mobile number directly.
  • Mobile to Mobile: Dial the 7- or 8-digit mobile number directly.

International Calls

  • Outgoing International Calls: Dial 00 followed by the country code, area code, and local number. For example, to call the US, dial 00 1 XXXXXXXXXX.
  • Incoming International Calls: Dial +673 followed by the 7- or 8-digit local number.

Number Portability

Brunei Darussalam supports Mobile Number Portability (MNP), allowing users to retain their numbers when switching providers. Fixed-line portability is not available.

Major Telecom Operators and Number Ranges

  • DST Communications: Uses '8' prefix for mobile services.
  • Progresif: Uses '7' prefix for mobile services.
  • Telekom Brunei (TelBru): Provides fixed-line services with '2' and '3' prefixes.

ITU-T Recommendations

Brunei Darussalam follows the [ITU-T E.164 standard](https://www.itu.int/rec/T-REC-E.164/en) for international numbering, ensuring global uniqueness and dialability.

Number Allocation and Management

The Authority for Info-communications Technology Industry (AITI) manages number allocation and ensures compliance with international standards. Visit their official website for more information.

Technical Restrictions and Special Cases

  • Golden Numbers: Reserved for easy recall, often used by businesses.
  • Number Blocking: Some ranges may be blocked for security reasons.

Technical Considerations for Developers

Validation Functions

Use the following function to validate Brunei Darussalam phone numbers:

JavaScript
function validateBruneiNumber(number) {
    const landlinePattern = /^[23]\d{6}$/;
    const mobilePattern = /^[78]\d{6,7}$/;
    const specialPattern = /^1\d{3,4}$/;

    return landlinePattern.test(number) || mobilePattern.test(number) || specialPattern.test(number);
}

Number Formatting

Ensure numbers are formatted according to the E.164 standard for international use.

References

For the latest telecommunications regulations, visit the Authority for Info-communications Technology Industry (AITI) website.

Frequently asked questions

The country code for Brunei Darussalam is +673. This code is required when dialing a Brunei number from another country. It precedes the subscriber's local number.

To dial a Brunei landline, use the format 2XXXXXX or 3XXXXXX, where X represents any digit. Landline numbers in Brunei are always seven digits long and begin with 2 or 3. No national prefix is required for domestic calls within Brunei.

Brunei mobile numbers are typically 7 or 8 digits long. These numbers usually start with 7 or 8, depending on the service provider. For example, DST Communications uses the '8' prefix, while Progresif uses '7'.

To call Brunei from the US or any other country, first dial the international exit code (00 or +), then Brunei's country code (+673), followed by the 7- or 8-digit local number. For example, 00 673 XXXXXXX.

Format Brunei numbers according to the E.164 standard for international use. This involves placing a '+' before the country code and the subscriber number, for example: +673XXXXXXXX.

The international prefix, or exit code, for Brunei is 00. This prefix is dialed before the country code when making international calls from Brunei.

In Brunei, DST Communications uses the prefix '8' for its mobile numbers, while Progresif uses the prefix '7'. Telekom Brunei (TelBru) handles landline numbers with prefixes '2' and '3'.

Brunei phone numbers include landline (7 digits starting with 2 or 3), mobile (7-8 digits starting with 7 or 8), emergency services (3 digits, often starting with 9), and premium rate numbers (4-5 digits starting with 1).

Brunei's closed numbering plan, with fixed-length phone numbers, simplifies call routing and number allocation. It ensures predictable dialing patterns for all types of phone numbers.

Mobile Number Portability (MNP) allows Brunei users to keep their existing mobile number when switching service providers. This fosters competition among providers and benefits consumers.

Use the provided regular expressions (regex) when developing applications that require Brunei phone number validation, such as online forms or databases. This ensures data accuracy and compliance with Brunei's number format standards.

The Authority for Info-communications Technology Industry (AITI) manages number allocation, enforces regulations, and ensures Brunei adheres to international telecommunications standards. Refer to their website (aiti.gov.bn) for details.

Golden numbers in Brunei are special phone numbers reserved for easier recall. They are often sought after by businesses for marketing and branding purposes due to their memorable sequences.

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