Technical Guide to Phone Numbers in Anguilla

Quick Reference

• Country: Anguilla
• Country Code: +1 (NANP)
• International Prefix: 011
• National Prefix: 1
• Regulatory Body: Anguilla Telecommunications Regulatory Authority (ATRA)

Overview

Discover the intricacies of Anguilla's telephone numbering plan, including formats, dialing procedures, and regulatory insights. This guide is essential for telecom professionals, developers, and anyone involved in telecommunications or CPaaS operations in Anguilla.

Number Formats

Anguilla adheres to the North American Numbering Plan (NANP), utilizing a standard 10-digit format for both landline and mobile numbers. Here's the breakdown:

General Number Structure

• Country Code: +1
• Area Code: 264 (specific to Anguilla)
• Subscriber Number: 7 digits

Landline Numbers

• Format: +1 264 NXX XXXX
• Examples:
  • +1 264 292 4612
  • +1 264 497 1234

Mobile Numbers

• Format: +1 264 NXX XXXX
• Examples:
  • +1 264 235 4697
  • +1 264 584 1234

Toll-Free Numbers

• Format: 800 XXX XXXX
• Prefixes: 800, 833, 844, 855, 866, 877, 888
• Examples:
  • 800 234 5678
  • 888 345 6789

Premium Rate Numbers

• Format: 900 XXX XXXX
• Prefix: 900
• Examples:
  • 900 234 5678
  • 900 345 6789

Numbering Scheme (Regular Expressions)

For validation purposes, Anguilla's numbering scheme can be represented using regular expressions:

• General Number Validation:

  ^\+1(264)[2-9]\d{2}\d{4}$
  

• Landline Number Validation:

  ^\+1(264)(292|497)\d{4}$
  

• Mobile Number Validation:

  ^\+1(264)(235|584)\d{4}$
  

• Toll-Free Number Validation:

  ^800[2-9]\d{2}\d{4}$
  

• Premium Rate Number Validation:

  ^900[2-9]\d{2}\d{4}$
  

Dialing Procedures

Domestic Calls

• Landline to Landline: Dial 1 + 264 + NXX XXXX
• Landline to Mobile: Dial 1 + 264 + NXX XXXX
• Mobile to Mobile: Dial 1 + 264 + NXX XXXX

International Calls

• Outgoing: Dial 011 + Country Code + Area Code + Subscriber Number
  • Example: To call the United States, dial 011 + 1 + XXX XXXX
• Incoming: Dial +1 + 264 + NXX XXXX

Recent or Upcoming Changes to the Numbering Plan

Currently, there are no significant changes to Anguilla’s numbering plan. It remains consistent with NANP standards.

Number Portability

Anguilla supports mobile number portability (MNP), enabling subscribers to retain their mobile numbers when switching providers. This is regulated by the Anguilla Telecommunications Regulatory Authority (ATRA).

Major Telecom Operators and Number Ranges

• Digicel Anguilla:
  • Mobile: 264-235-XXXX
• Flow Anguilla:
  • Mobile: 264-584-XXXX
  • Landline: 264-292-XXXX, 264-497-XXXX

ITU-T Recommendations

Anguilla adheres to the ITU-T E.164 recommendation for international public telecommunication numbering, ensuring global interoperability and efficient routing of calls.

Number Allocation and Management

The Anguilla Telecommunications Regulatory Authority (ATRA) oversees the allocation and management of telephone numbers, following NANP and ITU-T guidelines.

Technical Restrictions or Special Cases

• Golden Numbers: No specific regulations exist for "golden numbers" in Anguilla.
• Number Blocking: Available through service providers, allowing users to block specific numbers.

Technical Considerations

For developers and system administrators working with Anguilla's phone numbers, consider the following:

1. Validation: Use regular expression-based validation for compliance with Anguilla’s numbering plan.
2. Normalization: Store phone numbers in E.164 format (+1 264 NXX XXXX) for consistency.
3. Portability: Implement logic to handle mobile number portability (MNP) when integrating with telecom APIs or CPaaS platforms.
4. Time Zones: Consider Anguilla’s time zone (Atlantic Standard Time, AST) for scheduling automated calls or messages.