Luxembourg – Landlines and Mobile Phones

What are Luxembourg’s international dialling codes, and how does the local numbering system work?

Luxembourg’s country code is +352. Anyone calling a Luxembourg number from abroad must prefix the local number with this code. Whether you are dialling from within Europe or from the other side of the world, the approach is consistent: enter your international exit code (or the + symbol on a mobile device), followed by 352, then the complete local number.

Luxembourg operates without geographic area codes. While number prefixes are allocated to specific carriers and regions, every call — whether domestic or international — is made using the full number as issued. This stands in notable contrast to countries such as France, Germany, or Spain, where callers must either drop a leading zero or use a regional dialling code when calling within the country. In Luxembourg, you simply dial the number as it appears, every time.

Mobile numbers in Luxembourg follow a format beginning with a three-digit network identifier in the pattern “6×1”, succeeded by six further digits. The initial “6” is retained when dialling from overseas, which means there is no leading zero to strip out — a simplicity that many callers appreciate when dialling in from abroad.

The standard international format for Luxembourg numbers is: +352 (country code) followed by the local number — for instance, 621 123 456 for a mobile or 26 123 456 for a fixed line. Numbers introduced by the incumbent operator since May 2000 typically begin with “2” — most commonly 26, 24, and more recently 27 — followed by a further two to six digits.

Freephone numbers in Luxembourg begin with 800 and can usually only be reached from within the country. Numbers for premium-rate and special services carry distinct prefixes. Full details on number ranges and the charges that apply to each can be obtained from the Institut Luxembourgeois de Régulation (ILR), the country’s official telecommunications regulator.

Who provides fixed-line telephone services in Luxembourg, and how can you reach them?

Conventional analogue landlines were phased out entirely in 2024. Every fixed-line voice service in Luxembourg now runs over internet infrastructure through voice-over-IP (VoIP) technology. In everyday terms, this means that a home telephone still looks and behaves in the same familiar way — you have a number, a handset, and can make and receive calls — but the underlying delivery method is now your broadband connection rather than a dedicated copper wire.

To gain access to the fixed-line network, a new subscriber must first take out a connection with POST Luxembourg, the country’s national telecommunications operator. POST is a wide-ranging public service organisation with branches offering postal and parcel services, fixed and mobile telephone plans, internet and TV subscriptions, and even banking products. It is among Luxembourg’s largest employers.

The principal providers offering fixed-line and bundled telephony services are listed in the table below. Tariffs evolve frequently, so always consult each provider’s website directly for the most current pricing.

The transition to IP-based telephony may affect certain third-party devices and services — alarm systems in particular, as well as installations that support multiple telephone numbers over a single line. Residents with such arrangements should contact their provider to verify that their existing setup remains compatible and to make any adjustments required.

Anyone wishing to raise a complaint or dispute regarding fixed-line services in Luxembourg can approach the Institut Luxembourgeois de Régulation (ILR), which is responsible for regulating the country’s telecommunications sector and also publishes comparative market data alongside guidance for consumers.

Who are the leading mobile phone operators in Luxembourg, and how can you contact them?

As of 2023, the three principal mobile network operators in Luxembourg — POST Luxembourg, Proximus Luxembourg (Tango), and Orange Communications Luxembourg — together command more than 98% of the market. Smaller mobile operators in Luxembourg rely on one of these three underlying networks. Luxembourg Online also provides mobile telephony as a virtual network operator.

As the state-owned provider, POST holds the leading position in the Luxembourg mobile market and typically offers the broadest coverage across the country. That said, Orange and Tango each operate their own independent networks and put forward a competitive range of plans and pricing.

In terms of network quality, 4G or 4G+ connectivity is available across the great majority of the country. Signal tends to be most consistent in the more densely populated southern regions. For anyone living or working in Luxembourg — particularly in the south near Esch-sur-Alzette — 5G presents a compelling option. Coverage becomes more variable further north, and in the most rural parts of the Ardennes, even 4G can be intermittent.

As a guide to current pricing (as of early 2026): Tango’s GO Mobile M plan is priced at approximately €21 per month for 15 GB, while GO Mobile L runs to around €32 per month for 25 GB. Orange’s BeUnlimited plan, aimed at high-data users, is available at around €39.99 per month. Offers shift regularly, so always verify the latest pricing on each operator’s official website.

To compare plans side by side across providers, the independent tools Switchr.lu and LetzCompare are well regarded within Luxembourg’s expat community.

How do I arrange a landline connection in Luxembourg?

Since all fixed-line voice services in Luxembourg now run over internet infrastructure, setting up a home telephone is essentially a matter of subscribing to a broadband package that incorporates a voice service. The process is generally uncomplicated and can be handled either online or in person at a provider branch.

1. Select your provider. POST Luxembourg owns the primary fixed-line infrastructure, but Tango, Orange, and Eltrona all offer attractive bundled packages that include a home telephone number. Browse the options on each provider’s website or use Switchr.lu to compare them before making a decision.
2. Assess your property’s connectivity. Fibre optic installation costs are not always transparent in provider advertising. Your bill could be higher if your building or home is not already connected to fibre. Speak to your building’s management association or the previous occupant, and establish in advance whether your installation qualifies and what conditions apply.
3. Get in touch with the provider. To request a connection to the fixed network, contact POST or your preferred provider by phone or by completing a connection request form online. If you are moving into a property that already has an active line, the desired transfer date should be stated on the form.
4. Gather the necessary documents. Visit a branch of your chosen operator with proof of identity, proof of address, and a bank statement. Some operators may ask for further documentation depending on their individual policies, so it is advisable to confirm requirements when you first make contact.
5. Arrange the installation visit. Technicians can be sent to your home to set up the modem and configure a Wi-Fi network if required. Lead times differ by provider and property — ask your chosen operator for a current estimate at the time of application.
6. Wait for activation. Once the connection is established, your VoIP number will be assigned and ready for use. Clarify any equipment requirements or deposit conditions with your provider before signing the contract.

Whether you rent or own your home does not fundamentally alter the subscription process, but if you are renting it is sensible to check with your landlord whether any existing infrastructure or provider arrangements are already in place. For authoritative guidance, contact your chosen provider or the ILR directly.

How do I obtain a mobile SIM card or sign a mobile contract in Luxembourg?

Accessing mobile services in Luxembourg is relatively straightforward, whether you prefer a flexible prepaid arrangement on arrival or a full monthly contract once you have established yourself. The process broadly mirrors what you would encounter in most other continental European countries, with one key difference: a registered local address is generally a prerequisite for a postpaid subscription.

Prepaid SIM cards represent the most flexible starting point. They allow you to make calls, send messages, and use mobile data without committing to a long-term agreement or providing a Luxembourg address. For newly arrived expats who already own a compatible handset and simply need a local number for daily life, a prepaid SIM is often the most practical first step.

Until you have completed your registration with a Luxembourg commune, a postpaid mobile contract will generally not be available to you. In the interim, prepaid SIMs serve as the appropriate alternative — a requirement that is broadly consistent with the approach taken in neighbouring Belgium and the Netherlands, where residency registration is similarly a standard condition for postpaid mobile services.

All three major operators — POST, Tango, and Orange — sell prepaid SIM cards through their own retail outlets. Top-up credit for prepaid accounts can be purchased at supermarkets, petrol stations, and convenience stores throughout the country.

To sign up for a postpaid mobile contract, proceed as follows:

1. Register your address in Luxembourg. You will need to have completed your registration with your local commune and obtained a commune registration certificate (the attestation d’inscription) before most operators will process a postpaid contract application.
2. Visit a provider store or apply online. All three major operators maintain retail shops in Luxembourg City and other principal towns. Applications can also be started through their respective websites.
3. Present the required documents. Proof of identity, proof of address, and a bank statement are the standard requirements. Some operators may additionally request a Luxembourg IBAN for the purpose of setting up a direct debit.
4. Select a plan. Contracts typically run for 12 or 24 months, though month-to-month plans with no fixed commitment are also available, with charges based on actual usage of calls, data, and messages.
5. Collect your SIM or activate an eSIM. The eSIM — a virtual SIM embedded in the device — is growing in popularity across Luxembourg. POST, for example, offers eSIM activation for compatible handsets. Verify with your chosen provider whether an eSIM is available for your specific device.

Luxembourg’s mobile network uses the GSM standard, which means that most overseas visitors can connect to the local network without difficulty. If you are arriving from a country that uses the CDMA standard, compatibility may be more limited — though many contemporary smartphones are capable of operating on both systems.

How do I pay my phone bill in Luxembourg?

Settling your telephone bill in Luxembourg follows a pattern familiar to residents of most EU countries. Monthly billing is the norm for both fixed-line VoIP and mobile services, and most providers offer digital account management tools that allow you to monitor and pay invoices online.

The payment methods most commonly used are:

• Direct debit (domiciliation bancaire): This is the most widely used and convenient method. By authorising your provider to draw the monthly amount directly from your bank account, you remove the need to remember individual payment dates. Most operators actively encourage direct debit when a contract is signed.
• Online bank transfer: It is equally possible to pay each invoice manually through your bank’s online platform, using the account details printed on your bill. Luxembourg has a highly developed banking infrastructure, and the majority of residents manage their finances digitally as a matter of routine.
• In-person payment: POST Luxembourg operates an extensive branch network where bills can be settled in person. Other providers typically have fewer physical locations, so it is worth checking with your specific operator what in-person options are available.
• Prepaid top-up (automatic or manual): Certain providers offer prepaid arrangements for both fixed and mobile services. Under these schemes, subscribers purchase credit in advance and draw on it according to their usage, avoiding the possibility of unexpected charges at the end of a billing cycle.

Failing to pay a telephone bill on time can lead to service suspension or the application of late fees. Setting up automatic payments or calendar reminders is a sensible precaution to avoid any disruption. Luxembourg telecoms providers are bound by standard EU consumer protection rules regarding disconnection, which require written notice to be issued before any service is terminated. If you feel your provider has not acted fairly, the Institut Luxembourgeois de Régulation (ILR) is the designated body for handling consumer complaints in the telecoms sector.

Cross-border workers — known as frontaliers — are common in Luxembourg, with large numbers commuting daily from France, Belgium, and Germany. If your bank account is held in a neighbouring country, it is worth confirming with your operator that this presents no obstacle to direct debit arrangements. Most of the major providers accept EU-wide IBANs for this purpose, but it is advisable to verify this at the point of signing up.

What practical advice should newcomers know about using phones in Luxembourg?

Luxembourg is a compact but exceptionally well-connected country, and a few aspects of how telephony works here are particularly worth knowing before you settle in.

EU roaming: The abolition of EU roaming surcharges in 2017 means that a Luxembourg mobile contract allows you to use your calls, texts, and data allowance across all EU member states at no additional cost, subject to fair-use thresholds. Given that many Luxembourg residents regularly cross into France, Belgium, or Germany for work or leisure, this is an especially practical benefit.

Roaming beyond the EU: Not all Luxembourg mobile plans extend seamlessly outside the EU. If your work or lifestyle involves regular travel to Benelux countries or beyond, look for a tariff that explicitly covers calls and data usage abroad. For longer-haul destinations, read your plan’s international roaming terms carefully — POST, for example, includes packages covering the USA, Canada, and China within certain higher-tier plans.

Switching providers and keeping your number: Luxembourg supports full mobile number portability, so you can change operators without losing your existing number. This is particularly valuable for businesses or individuals for whom continuity matters. The porting process typically takes between one and three working days. You will be notified in advance of the exact date and time of the transfer, and a brief interruption in service on that day is normal. Keep your existing SIM in your device until the transfer takes place, then replace it with the SIM from your new provider.

eSIM options: The eSIM is becoming an increasingly common choice in Luxembourg. As of 2025, POST offers eSIM profile activation for compatible devices at a cost of €5. Orange and Tango also support eSIM — consult each provider’s website for lists of compatible handsets and current availability details.

Signal quality in rural areas: While POST, Tango, and Orange all maintain independent networks, coverage quality varies across the country. The northern Ardennes region can experience patchy 4G reception, and in some areas your device may connect to a German or Belgian network instead — which could attract additional charges depending on your plan. Always check the coverage maps published by your chosen operator for the specific locations where you live and work.

Public Wi-Fi: Luxembourg ranks among the best-served countries in Europe for public Wi-Fi. Free high-bandwidth wireless internet is available in both Luxembourg City and Esch-sur-Alzette, though registration for an account is required to access the service. A premium, advertisement-free tier is also on offer.

Retaining a number from your previous country: If you wish to keep your former mobile number active, the simplest solution is to maintain the original SIM on a low-cost plan while acquiring a Luxembourg number for everyday use. Transferring a foreign number directly onto a Luxembourg network (international number porting) is generally not supported — confirm the position with your chosen provider if this is a specific requirement.

Language of customer support: Luxembourg is officially trilingual in Luxembourgish, French, and German, and all major telecoms operators provide customer service in at least French and German, with English widely available as well. This makes dealing with providers far more accessible for expats who have not yet developed proficiency in local languages.

Frequently asked questions about telephone services in Luxembourg

Can I keep my foreign mobile number when I move to Luxembourg?

Porting a number from abroad onto a Luxembourg network is not generally possible. The typical approach for expats is to retain a budget plan on the original number — useful for staying accessible to existing contacts and maintaining links to foreign banking services — while separately acquiring a Luxembourg SIM for everyday local use. If cross-border porting is important to you, contact your preferred Luxembourg operator directly to find out whether any arrangements exist for your country of origin.

Do I need a local address to get a SIM card in Luxembourg?

Prepaid SIMs do not require a registered Luxembourg address and are a good option for newly arrived expats. They allow you to make calls, send messages, and use data without needing to sign a contract or provide an official address. However, for a postpaid contract, a Luxembourg address registration is generally required. Most operators ask for proof of identity, proof of address, and a bank statement.

How long does it take to get a mobile contract approved in Luxembourg?

If you visit a provider store with all your documents, postpaid contract approval is typically completed on the same day. Prepaid SIMs can be activated within minutes of purchase. A physical SIM or eSIM is usually fully operational within 24 hours of the contract being signed.

Is 5G available in Luxembourg?

Yes. POST operates the most extensive 5G network in Luxembourg, with dense coverage across the centre, south, east, and west of the country. Orange and Tango also offer 5G, particularly in urban centres and southern areas, although signal becomes thinner as you move into the rural north. Before committing to a plan, consult each operator’s official coverage map to check what is available in your area.

What is the national telecoms regulator in Luxembourg, and what can it help with?

The Institut Luxembourgeois de Régulation (ILR) is Luxembourg’s telecommunications watchdog. It oversees competition in the market, produces consumer-facing guidance, processes complaints against telecoms providers, and maintains authoritative records on number ranges and the obligations that apply to operators. If a dispute with your provider cannot be resolved through direct contact, the ILR is the appropriate authority to approach.

Can I use my Luxembourg mobile plan in neighbouring countries like France, Belgium, and Germany?

Yes. EU-wide roaming surcharges were eliminated in 2017, so your Luxembourg mobile plan gives you access to calls, texts, and data across all EU member states at the same rates you pay domestically, within fair-use limits. For people who cross borders frequently — a very common situation in Luxembourg — it is worth selecting a plan with generous EU data allocations. Some operators offer dedicated packages tailored to the needs of frontaliers.

Are there still traditional analogue landlines in Luxembourg?

No. The migration away from analogue fixed-line telephony was completed in 2024. Every home telephone service in Luxembourg is now delivered over a broadband internet connection using VoIP technology. From the user’s perspective the experience is the same — a number, a handset, and the ability to make and receive calls — but the technology behind it has fundamentally changed. If you use your landline connection to support an alarm system or similar device, verify compatibility with your provider before signing up for a new service.

How do I compare mobile and broadband plans in Luxembourg?

The two most widely used independent comparison platforms in Luxembourg are Switchr.lu and LetzCompare. Both bring together current offerings from POST, Tango, Orange, and other operators, with filters for price, data allowance, contract duration, and coverage. Always verify the details of any plan you find directly on the operator’s own website before committing.