Understanding Phone Numbers in Monaco

Quick Reference

• Country: Monaco
• Country Code: +377
• International Prefix: 00
• National Prefix: 0

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Overview

Monaco's telephone numbering plan is essential for seamless communication both domestically and internationally. This guide offers a comprehensive look at Monaco's phone number structure, dialing procedures, and regulatory insights, tailored for telecom professionals and developers seeking precise information.

Number Formats

Monaco's phone numbers adhere to the ITU-T E.164 standard, ensuring global interoperability. Below is a detailed breakdown of the various phone number types in Monaco, including their format and examples.

General Number Structure

All Monaco phone numbers include:

• Country Code: +377
• Subscriber Number: 8 digits

Geographic (Landline) Numbers

Used for fixed-line services, Monaco's geographic numbers follow this format:

• Format: 9XXXXXXX
• Example: 92012345

Mobile Numbers

Monaco's mobile numbers begin with specific digits to denote the service provider:

• Format: 6XXXXXXX
• Example: 61234567

Toll-Free Numbers

Businesses and organizations use toll-free numbers to allow callers to contact them without charges:

• Format: 800XXXX
• Example: 8001234

Special Service Numbers

These numbers are designated for emergency hotlines and customer service:

• Format: 9XXXXXXX
• Example: 99912345

Number Format Summary Table

Type	Format	Example
Geographic	9XXXXXXX	92012345
Mobile	6XXXXXXX	61234567
Toll-Free	800XXXX	8001234
Special Services	9XXXXXXX	99912345

Regular Expressions for Number Validation

Developers and system administrators can use the following regex patterns to validate Monaco phone numbers:

• Geographic Numbers:

  ^9\d{7}$
  

• Mobile Numbers:

  ^6\d{7}$
  

• Toll-Free Numbers:

  ^800\d{4}$
  

• Special Services:

  ^9\d{7}$
  

Dialing Procedures

Domestic Calls

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

International Calls

• Outgoing: Dial 00 (international prefix) + 377 (country code) + 8-digit subscriber number.
• Incoming: Dial +377 followed by the 8-digit subscriber number.

Number Portability

Monaco supports number portability, allowing subscribers to retain their numbers when switching providers, particularly for mobile numbers.

Major Telecom Operators

Monaco's telecom market is primarily served by:

• Monaco Telecom: The main operator, offering both fixed-line and mobile services. Number ranges include:
  • Geographic: 92XXXXXX
  • Mobile: 6XXXXXXX
  • Toll-Free: 800XXXX

Regulatory Body

The Direction des Communications Électroniques (DCE) oversees telecommunications in Monaco, managing number allocation and regulation. For more details, visit the official DCE website.

Recent or Upcoming Changes

Currently, there are no significant changes to Monaco's numbering plan. Any future updates will be announced by the DCE.

Number Allocation and Management

The DCE strictly manages number allocation in Monaco, ensuring compliance with demand and regulatory standards, especially for toll-free and premium numbers.

Technical Considerations

For Developers and System Administrators

• Validation: Utilize the provided regex patterns to validate Monaco phone numbers in your systems.
• Number Formatting: Store phone numbers in the E.164 format for global compatibility.
• Portability: Implement checks for number portability if your system interfaces with Monaco's telecom infrastructure.