Comprehensive Guide to Norfolk Island Phone Numbers

Quick Reference

• Country: Norfolk Island
• Country Code: +672
• International Prefix: 00
• National Prefix: None

Overview

Discover the detailed structure of Norfolk Island's telephone numbering plan. This guide covers phone number formats, dialing procedures for both domestic and international calls, and essential technical details. Ideal for telecom professionals, developers, and anyone working with Norfolk Island's telecommunications systems.

Number Formats

General Number Structure

Norfolk Island employs a straightforward numbering plan with fixed-length formats:

• Country Code: +672
• Subscriber Number Length: 5 or 6 digits

Landline Numbers

Landline numbers follow a specific pattern:

• Format: 1[06|17|28|39]X{3}
• Example: 1061728393202183

Structure Details:

• 1: Initial digit for landline numbers.
• 06|17|28|39: Specific prefixes for landline services.
• X3: Three-digit subscriber number.

Mobile Numbers

Mobile numbers have a distinct format:

• Format: 14|3[58]X{4}
• Example: 143585824

Details:

• 14|3[58]: Prefixes for mobile services.
• X4: Four-digit subscriber number.

Special Services Numbers

Special services, such as emergency numbers, typically have shorter formats. Specific details are regulated and may not be publicly disclosed.

Number Format Table

Regular Expressions for Validation

Use this regex pattern to validate Norfolk Island phone numbers:

/^(1(?:06|17|28|39)\d{3}|(?:14|3[58])\d{4})$/

This pattern matches both landline and mobile numbers as per the described formats.

Dialing Procedures

Domestic Calls

• Landline to Landline: Dial the full landline number directly.
• Landline to Mobile: Dial the mobile number directly.
• Mobile to Mobile: Dial the mobile number directly.

International Calls

• Outgoing: Use the international prefix 00, followed by the country code, then the local number.
  • Example: 00 + [Country Code] + [Local Number]
• Incoming: Use the format: +672 [Local Number] to call from abroad.

Number Portability

Currently, Norfolk Island does not support number portability, meaning subscribers cannot retain their phone numbers when switching providers.

Major Telecom Operators

The telecommunications infrastructure in Norfolk Island is typically managed by regional or international providers. Specific operator details and number ranges are not publicly available.

ITU Recommendations

Norfolk Island adheres to the ITU-T E.164 standard for international telephone numbering, ensuring global uniqueness with the +672 country code.

Number Allocation and Management

The Australian Communications and Media Authority (ACMA) oversees the allocation and management of phone numbers in Norfolk Island. Visit the ACMA official website for more information.

Technical Restrictions and Special Cases

• Golden Numbers: No publicly available details on 'golden' or premium numbers.
• Number Blocking: Certain numbers, especially for emergency services, are blocked from general allocation.

Technical Considerations for Developers

When developing systems for Norfolk Island phone numbers, consider:

1. Validation: Use regex-based validation for number formats.
2. Internationalization: Support the +672 country code and format numbers per ITU-T E.164 standards.
3. Dialing Logic: Account for the absence of a national prefix.
4. Portability: Do not assume numbers can be retained across operators.