How to Use the +352 Country Code: A Guide for SMBs and Startups

Whether you’re coordinating with a tech partner in Luxembourg City or following up with a client in Esch-sur-Alzette, understanding how to correctly format and dial Luxembourg phone numbers is key to maintaining efficient international communication.

This guide walks you through everything you need to know about the +352 country code, number formatting requirements, and how DialLink helps SMBs and startups stay connected across borders.

What Is the 352 Country Code?

+352 is the country code for Luxembourg. When calling a Luxembourg phone number from outside the country, you must include this prefix before the local number.

Here’s what the typical format looks like:

• Country Code: +352
• Local Number: 6 to 9 digits (no area code)

Example format: +352 26 123 456.

Luxembourg does not use geographic area codes. Phone numbers are organized by prefix blocks assigned to carriers and regions, but all are dialed as a single number.

Common Pitfalls in International Number Formatting

Failing to properly format Luxembourg numbers can result in failed calls, delivery issues, or CRM mismatches. Common mistakes include:

• Omitting the country code (+352): Calls from abroad won’t connect without it.
• Using assumed area codes: Luxembourg numbers don’t have area codes; each number is unique from the start.
• Entering numbers in inconsistent formats across systems: CRMs and VoIP platforms often require E.164 formatting (e.g., +35226123456).
• Misunderstanding toll-free prefixes: Numbers like 1-800 or 1-888 do not apply in Luxembourg.

Ensuring consistency across your communication stack improves call success rates and professional appearance.

Make International Calling Easy with DialLink

DialLink is an AI-powered cloud phone system built for SMBs and startups that need flexible, reliable communication across international markets. Whether you're handling support, sales, or vendor coordination, DialLink helps you stay connected with Luxembourg-based contacts.

With DialLink, you can:

• Make international calls with transparent pricing
• Automate call handling and routing with AI voice agents
• Send and receive messages from and to Luxembourg numbers
• Connect from mobile, desktop, or desk phones
• Store contact data consistently across systems

DialLink helps growing businesses build global relationships without the complexity of traditional telephony.

Common Luxembourg Number Format Examples

Note: Toll-free numbers in Luxembourg start with 800 and are generally only reachable within the country.

How to Read and Format Luxembourg Numbers

Luxembourg uses a closed numbering system. While landlines, mobiles, and VoIP numbers differ by prefix, all numbers are dialed in full without the use of area codes.

• +352 – The international dialing code for Luxembourg
• XXX XXX XXX – Local number, often 6 to 9 digits depending on the provider and number type

Format Variations

• International Format (E.164): +352621123456 — used in CRMs and VoIP systems
• Local Format (within Luxembourg): 621 123 456 (mobile), 26 123 456 (landline)
• Dialing from the U.S.: 011 352 621 123 456

Best Practices for SMBs

• Always use the international format (+352 XXXXXXXX) to ensure compatibility across platforms.
• Avoid storing numbers without the country code, especially when managing international communications.
• Ensure consistency in formatting across your CRM, phone system, and communication tools.

By understanding how each part of a Luxembourg phone number works, SMBs can reduce miscommunication, improve call connection rates, and maintain a professional image in international interactions.