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Comprehensive Guide to Guinea-Bissau Phone Numbers

Quick Reference

  • Country: Guinea-Bissau
  • Country Code: +245
  • International Prefix: 00
  • National Prefix: None
  • Number Length: 8 digits

Overview

Discover essential information about the telephone numbering plan in Guinea-Bissau. This guide covers phone number structures, dialing procedures, and regulatory standards, making it indispensable for telecom professionals and developers working in the region.

Number Structure

General Number Format

Guinea-Bissau utilizes an 8-digit numbering plan without area codes. Phone numbers are structured based on service type, such as landline or mobile:

  • Country Code: +245
  • Subscriber Number: 8 digits

Number Formats by Type

TypeFormatExampleDescription
Landline44X{6}44376543Landline numbers start with '44' followed by 6 digits.
Mobile9[567]X{6}95565695Mobile numbers start with '95', '96', or '97' followed by 6 digits.
Special Services80X{5}80012345Special service numbers start with '80' and are 8 digits in length.

Regular Expressions for Number Validation

Ensure numbers conform to expected formats using these regex patterns:

  • Landline: ^44\d{6}$
  • Mobile: ^9[567]\d{6}$
  • Special Services: ^80\d{5}$

Dialing Procedures

Domestic Calls

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

International Calls

  • Outgoing: Dial 00, followed by the country code, and then the destination number.
  • Incoming: International callers should dial their international access code, +245, and then the 8-digit local number.

Recent or Upcoming Changes

Currently, there are no recent changes to Guinea-Bissau's numbering plan. The system remains stable with no significant modifications announced.

Number Portability

Guinea-Bissau does not offer mobile number portability, meaning users cannot retain their numbers when switching providers.

Major Telecom Operators

Key telecom operators include:

  • Guiné Telecom: The state-owned provider.
  • Orange Guinea-Bissau: A leading mobile network operator.

For more details, visit the Autoridade Reguladora das Comunicações de Guiné-Bissau (ARCOM) official website.

ITU-T Standards

Guinea-Bissau adheres to ITU-T E.164 recommendations, ensuring consistent international numbering and facilitating global telecommunications interoperability.

Number Allocation and Management

The Autoridade Reguladora das Comunicações de Guiné-Bissau (ARCOM) manages phone number allocation, ensuring compliance with international standards.

Technical Restrictions and Special Cases

There are no specific technical restrictions like golden numbers in Guinea-Bissau's numbering plan. All numbers follow the standard 8-digit format.

Technical Considerations for Developers

When integrating Guinea-Bissau phone numbers into systems, consider:

  • Validation: Use the provided regex patterns to ensure correct formatting.
  • Internationalization: Systems should handle the +245 country code and manage prefixes for different dialing scenarios.
  • Portability: Since number portability is unavailable, do not assume numbers can be retained across operators.

For the latest telecommunications regulations, visit the ARCOM official website.