Andorra Phone Number Guide

Quick Reference

• Country: Andorra
• Country Code: +376
• International Prefix: 00
• National Prefix: None

Introduction

This comprehensive guide explores the telephone numbering system in Andorra, detailing phone number formats, dialing procedures, and telecommunications regulations. It is tailored for telecom professionals, developers, and systems administrators seeking to understand and implement Andorra's numbering plan effectively.

Number Formats in Andorra

Andorra adheres to the ITU-T Recommendation E.164 for its telephone numbering plan. Here's a breakdown of the number structures:

General Number Structure

• Country Code: +376
• National (Significant) Number: 6 to 8 digits
  • Fixed-line Numbers: 6 digits
  • Mobile Numbers: 8 digits
  • Special Service Numbers: Variable lengths

Detailed Number Structure

Type	Format	Example	Description
Fixed-line	[78]XXXX	787895	6-digit numbers starting with 7 or 8.
Mobile	6XX XXXX	690 123 456	8-digit numbers starting with 6.
Toll-Free	180[02] XXXX	180020294	8-digit numbers starting with 180, followed by 02.
Premium Rate	19XXXX	191955	6-digit numbers starting with 19.
Emergency	1XX	112	3-digit emergency numbers (e.g., 112 for general emergencies).

Regular Expressions for Validation

• Fixed-line Numbers:
  ^[78]\d{5}$
  

• Mobile Numbers:
  ^6\d{7}$
  

• Toll-Free Numbers:
  ^180[02]\d{4}$
  

• Premium Rate Numbers:
  ^19\d{4}$
  

• Emergency Numbers:
  ^1\d{2}$
  

Dialing Procedures

Domestic Calls

• Landline to Landline: Dial the 6-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 (International Prefix) + 376 (Country Code) + the local number.
• Incoming: From abroad, dial the international access code of the originating country, followed by 376 and the local number.

Number Portability

Andorra supports mobile number portability, allowing users to retain their mobile number when switching between service providers. For detailed procedures, consult the Comissió per a la Regulació dels Serveis de Comunicacions (CRSC).

Major Telecom Operators and Number Ranges

Operator	Number Ranges	Notes
Andorra Telecom	7XXXXX, 6XXXXXXX	Sole telecom operator in Andorra, handling all number allocations.

Regulatory Body

The telecommunications sector in Andorra is regulated by the Comissió per a la Regulació dels Serveis de Comunicacions (CRSC). For the most accurate and up-to-date information, visit their official website.

Recent or Upcoming Changes

As of the latest information, there have been no significant changes to Andorra's numbering plan in the past five years. Updates will be managed and announced by the CRSC.

Number Allocation and Management

All phone numbers in Andorra are allocated and managed by Andorra Telecom under the oversight of the CRSC. Number allocation follows ITU-T standards to ensure fair and efficient distribution.

Technical Considerations

For developers and systems dealing with Andorra's phone numbers:

• Validation: Use the provided regex patterns to validate different types of numbers.
• Normalization: Ensure that all numbers are stored in E.164 format for consistency.
• Portability: Implement checks for number portability if your application involves mobile numbers.

This guide is a valuable resource for understanding and implementing Andorra's phone numbering system in your telecommunications or software projects.