Jersey Phone Numbers: Formats, Dialing, and Regulations

Quick Reference

• Country: Jersey
• Country Code: +44
• International Prefix: 00
• National Prefix: 0
• Regulatory Authority: Ofcom (UK)

Overview

This guide offers a detailed overview of Jersey's telephone numbering plan, focusing on phone number structures, dialing procedures, and telecommunications regulations. It's essential for telecom professionals, developers, and system administrators seeking precise information on Jersey's phone number formats.

Number Formats

General Number Structure

Jersey follows the UK's National Telephone Numbering Plan, using the +44 country code. The typical phone number structure in Jersey includes:

• Country Code: +44
• Area Code: 1534 (for geographic numbers)
• Subscriber Number: 6 to 8 digits

Detailed Number Formats

Type	Format	Example	Regular Expression
Geographic Numbers	1534 XXXXXX or 1534 XXXXXXX	1534123456	^1534\d{6,7}$
Mobile Numbers	07XXX XXXXXX	07700912345	^07\d{9}$
Toll-Free Numbers	0800 XXX XXXX	08001234567	^0800\d{6,7}$
Premium Rate Numbers	09XX XXX XXXX	09001234567	^09\d{8}$
Non-Geographic	03XX XXX XXXX	03001234567	^03\d{8}$

Dialing Procedures

Domestic Calls

• Landline to Landline: Dial the full 7-digit local number.
• Landline to Mobile: Dial the full 10-digit mobile number starting with 07.
• Mobile to Mobile: Dial the full 10-digit mobile number.

International Calls

• Outgoing: Dial 00, followed by the country code and local number. For example, to call the UK, dial 00 44 and the local number.
• Incoming: Callers from abroad should dial +44, followed by the local number without the leading 0.

Number Allocation and Management

Regulatory Body

The telecommunications sector in Jersey is regulated by Ofcom, which also oversees the UK's telecommunications industry. Number allocation and management in Jersey adhere to Ofcom's guidelines.

Number Portability

Jersey supports number portability, allowing users to retain their phone numbers when switching providers. This applies to both mobile and fixed-line numbers.

Major Telecom Operators and Number Ranges

Jersey's telecom market includes operators like:

• Sure: Offers mobile and fixed-line services.
• JT Group: Provides a variety of services, including mobile and fixed-line.

Technical Considerations for Developers

When working with Jersey phone numbers, consider:

• Validation: Use regular expressions to validate phone number formats. For example, to validate a Jersey mobile number:

  ^07\d{9}$
  

• Number Formatting: Ensure systems handle both national and international formats correctly, removing the leading 0 for international dialing.

• Portability: Implement support for number portability to enhance user experience when switching providers.

• Compliance: Ensure compliance with ITU-T E.164 standards for international numbers.

ITU-T Recommendations

Jersey adheres to ITU-T recommendations, particularly the E.164 standard, ensuring global compatibility and standardization of phone numbers.

Recent or Upcoming Changes

There have been no significant changes to Jersey's numbering plan in the past five years. Stay informed by monitoring Ofcom's announcements for updates.

Technical Restrictions and Special Cases

Currently, there are no specific technical restrictions or special cases, such as golden numbers or number blocking, in Jersey's numbering plan.

Conclusion

Jersey's telephone numbering plan aligns closely with the UK's, featuring specific formats for geographic, mobile, toll-free, and premium rate numbers. Understanding these formats and dialing procedures is crucial for telecom professionals and developers. By following this guide, you can ensure compliance with the latest telecommunications standards and best practices in Jersey.