The +352 country code connects calls to Luxembourg, a tiny landlocked country of about 660,000 people wedged between Belgium, France, and Germany. Luxembourg is smaller than Rhode Island but is home to major EU institutions, a massive financial sector, and has the highest GDP per capita in the world. Nearly half the population are foreign nationals, and about 200,000 cross-border commuters drive in daily from France, Belgium, and Germany.
If you see a phone number starting with +352, it comes from Luxembourg. The country has no trunk prefix and no area codes. Numbers vary in length depending on whether they are landlines (typically 6 digits) or mobiles (9 digits).
Quick answer: Dial +352 followed by the number. No trunk prefix, no area codes. Mobile numbers are 9 digits starting with 6. Landlines are shorter, typically 6 digits starting with 2, 3, 4, 5, 7, or 8.
How to call Luxembourg: quick reference
Luxembourg uses 00 as its international exit code. Callers outside Luxembourg just need +352 followed by the full number. There is no trunk prefix to drop.
| Calling from | Dialing format |
|---|---|
| US/Canada mobile | +352 [local number] |
| US/Canada landline | 011-352-[local number] |
| UK | 00-352-[local number] |
| Australia | 0011-352-[local number] |
| Germany | 00-352-[local number] |
| France | 00-352-[local number] |
Understanding Luxembourg phone numbers
Luxembourg phone numbers have variable length, which is unusual. There are no area codes and no trunk prefix. The leading digit tells you the number type.
Mobile numbers
Mobile numbers are 9 digits long and start with 6: +352 6XX XXX XXX. The second digit identifies the original operator (21/22 for POST, 61 for Tango, 91 for Orange), but number portability means you can't rely on this anymore.
Landline numbers
Landlines are shorter and variable: most are 6 digits, but some are 7 or 8. Luxembourg City numbers typically start with 2 or 4. Numbers starting with 2 are the most common for Luxembourg City. Other regions use prefixes like 3, 5, 7, or 8. There are no separate area codes since the country is so small (2,586 km²) that geographic routing isn't needed.
Number formats
| Type | Starts with | Length | Example |
|---|---|---|---|
| Mobile | 6 | 9 digits | +352 621 123 456 |
| Luxembourg City landline | 2, 4 | 6-8 digits | +352 22 12 34 |
| Other landlines | 3, 5, 7, 8 | 6-8 digits | +352 31 12 34 |
| VoIP/special | 20, 27, 28 | variable | +352 20 123 456 |
Mobile carriers in Luxembourg
Luxembourg has three mobile operators for a population that nearly doubles in size during working hours thanks to cross-border commuters.
POST Luxembourg
The state-owned incumbent, POST Luxembourg (formerly P&T Luxembourg) runs the largest fixed and mobile network. They have the widest coverage including rural areas and are the dominant broadband provider. Mobile numbers historically start with +352 621 or +352 622.
Tango
Owned by the Belgian Proximus group, Tango is the second-largest operator. They were the first private mobile company in Luxembourg (launched 1998) and are popular with business users. Historical mobile prefix: +352 661.
Orange Luxembourg
Part of the Orange Group, Orange Luxembourg is the third operator and tends to compete on price. They entered the market in 1999 as VOXmobile before rebranding. Historical mobile prefix: +352 691.
Don't confuse +352 with nearby codes
Luxembourg's +352 code isn't commonly confused with its neighbors, but a few codes are numerically close.
| Code | Country | How to tell apart |
|---|---|---|
| +32 | Belgium | The most common mix-up. Belgium is +32, Luxembourg is +352. Belgian numbers use a trunk prefix 0 and are longer. Many Luxembourg residents previously lived in Belgium, so both codes show up in contact lists. |
| +33 | France | France borders Luxembourg to the south. French numbers start with +33 and are 9 digits after the code. About 120,000 French residents commute into Luxembourg daily. |
| +49 | Germany | Borders Luxembourg to the east. German numbers start with +49 with variable length. Around 50,000 German commuters cross into Luxembourg each workday. |
| +353 | Ireland | Just one digit off (+352 vs +353). No geographic connection, but the numeric similarity can cause typos. |
The Belgium confusion is the worst. Belgian province of Luxembourg (yes, same name) shares a border with the country of Luxembourg. If you're calling someone in "Luxembourg" and they gave you a +32 number, they are in Belgian Luxembourg, not the country.
Time zone considerations
Luxembourg uses Central European Time (CET, UTC+1) in winter and Central European Summer Time (CEST, UTC+2) from late March to late October.
| Your location | Time difference | Best calling window |
|---|---|---|
| US East Coast (EST/EDT) | +6 hours | 8 AM - 12 PM your time (2 PM - 6 PM Luxembourg) |
| US West Coast (PST/PDT) | +9 hours | 7 AM - 10 AM your time (4 PM - 7 PM Luxembourg) |
| UK (GMT/BST) | +1 hour | 9 AM - 8 PM your time |
| Australia (AEST/AEDT) | -9 hours | 5 PM - 10 PM your time (8 AM - 1 PM Luxembourg) |
| Japan (JST) | -8 hours | 4 PM - 10 PM your time (9 AM - 3 PM Luxembourg) |
Luxembourg shares the same time zone as Belgium, France, and Germany, so cross-border calls to its three neighbors require no time zone adjustment.
Communication in Luxembourg
Business hours
Standard business hours are 8:30 AM to 5:30 PM, Monday through Friday. The financial sector (Luxembourg's largest industry) keeps strict hours. Government offices typically close by 4:30 PM. Shops close at 6 PM on weekdays and 5 PM on Saturdays. Most things are closed on Sundays.
Communication style
Luxembourg is trilingual: Luxembourgish, French, and German are all official languages. Business calls with financial institutions and government offices are usually in French. Many people also speak English, especially in the international business community. On a personal call, Luxembourgish is used between locals, but you'll rarely encounter it in a business context. If you're unsure, start in English or French.
Network quality
Luxembourg has strong telecom infrastructure. The country is small enough that all three mobile networks cover essentially 100% of the territory. 4G LTE is universal, and 5G is deployed in Luxembourg City and surrounding areas. Fiber broadband penetration is among the highest in Europe. VoIP call quality is consistently good.
The Luxembourg diaspora
Where they went
Luxembourg has a small native diaspora since the country's economy gives people few reasons to leave. The larger story is the reverse: about 47% of Luxembourg's residents are foreign-born, mostly Portuguese (the largest immigrant community at around 15% of the population), French, Italian, Belgian, and German. This means many +352 calls are incoming rather than outgoing, with immigrants calling family abroad.
Why they call
The Portuguese community drives a large share of international calling from Luxembourg. Portuguese families settled in Luxembourg beginning in the 1960s for construction and service jobs, and the community now spans three generations. Calls to Portugal cluster around evenings and Sunday mornings. The cross-border commuters (200,000+ daily from France, Belgium, and Germany) generate a different pattern: work-related calls during business hours that switch between +352 and +33/+32/+49 numbers constantly. EU institutional workers, who come from all 27 member states, add another layer of international calling traffic.
Dialing examples
Calling a mobile phone in Luxembourg
To call a Luxembourg mobile number 621 123 456 from abroad, dial: +352 621 123 456. From a US landline: 011 352 621 123 456. No digits to drop since Luxembourg has no trunk prefix.
Calling a landline in Luxembourg City
To call a Luxembourg City landline 22 12 34 from abroad, dial: +352 22 12 34. From a UK phone: 00 352 22 12 34. Note the shorter length compared to mobile numbers.
Calling a landline outside Luxembourg City
To call a landline in Esch-sur-Alzette 54 12 34 from abroad, dial: +352 54 12 34. From a German phone: 00 352 54 12 34.
Calling within Luxembourg
For domestic calls, just dial the number directly. No prefix needed. Call 621 123 456 for a mobile or 22 12 34 for a landline. The domestic and international formats are the same (minus the +352).
Common mistakes to avoid
Confusing +352 with +32 (Belgium)
This is the most common error. Belgium is +32, Luxembourg is +352. To make it worse, Belgium has a province called Luxembourg that borders the country. If a number starts with +32, it's Belgian. If it starts with +352, it's the Grand Duchy.
Expecting a standard digit count
Luxembourg numbers vary in length. Mobile numbers are 9 digits, but landlines can be 6, 7, or 8 digits. Don't assume something is wrong if a Luxembourg landline looks shorter than what you're used to. A 6-digit landline number is normal.
Adding a trunk prefix
Luxembourg has no trunk prefix. Don't add a 0 before the number. Dial +352 621 123 456 for a mobile, not +352 0621 123 456. The extra zero will cause the call to fail.
Assuming everyone speaks the same language
Luxembourg has three official languages plus widespread English. If you call a business and get an answer in French but expected German (or vice versa), don't hang up. Just ask to switch. Most people in Luxembourg handle at least two or three languages comfortably.
Prefer calling over WiFi? See our guide to the best apps for WiFi calling.
Frequently asked questions (FAQ)
What country uses the +352 code?
Luxembourg. The +352 country code is assigned to the Grand Duchy of Luxembourg, a small country in Western Europe between Belgium, France, and Germany.
How many digits are in a Luxembourg phone number?
It varies. Mobile numbers are 9 digits (starting with 6). Landlines are typically 6 digits but can be 7 or 8. There is no trunk prefix or area code.
What is the difference between +32 and +352?
+32 is Belgium and +352 is Luxembourg. Belgium also has a province called Luxembourg, which adds to the confusion. Check the full code carefully.
Does Luxembourg have a trunk prefix?
No. Luxembourg has no trunk prefix. The number you dial locally is the same number you dial internationally after +352.
How much does it cost to call Luxembourg?
With CallSky, calls to Luxembourg landlines start at $0.03/min (Premium) or $0.10/min (Economy). Mobile calls start at $0.05/min (Premium) or $0.19/min (Economy). No subscription required.
For more Western European dialing guides, see Belgium (+32), France (+33), or Germany (+49). Or browse the full country codes directory.