Area Code 22 – Luxembourg City

Geographic Coverage and Administrative Jurisdiction

The +352 22 prefix is a geographic National Destination Code (NDC) assigned to the central and southern districts of Luxembourg City, the capital of the Grand Duchy of Luxembourg. This code covers the historic city center (Ville Haute), the Gare district, the Kirchberg plateau (home to EU institutions), and adjacent neighborhoods such as Bonnevoie and Belair. As part of the national numbering plan administered by the Institut Luxembourgeois de Régulation (ILR), the prefix is allocated to fixed-line PSTN and VoIP services. Unlike larger countries, Luxembourg uses a single national dialing code (+352) without trunk prefixes, so the 22 prefix is only used in international format.

Dialing Formats and Caller Instructions

Luxembourg's national numbering plan employs variable-length subscriber numbers, typically ranging from 6 to 8 digits after the country code. For the 22 prefix, local numbers are usually 6 digits long, giving a total international format of +352 22XXXXXX. When calling from within Luxembourg, subscribers must dial the full national number without any trunk prefix—for example, 22 12 34 56. However, due to the small geographic size of the country, local calls within Luxembourg City do not require an area code; all national numbers are dialed as a single sequence. For international callers, the format is: +352 22 12 34 56 (or 00352 22 12 34 56 from countries using the international prefix 00).

Overlay and Numbering Plan Considerations

Luxembourg has not implemented overlay area codes, as the entire country operates as a single numbering plan area. The 22 prefix is one of several geographic codes assigned to Luxembourg City, alongside 26, 27, 29, 30, and others. Since 2005, number portability allows subscribers to retain their 22 numbers when switching to other fixed-line operators or moving to different regions, which can blur strict geographic associations. VoIP providers also utilize geographic prefixes, meaning a +352 22 number may be served over IP infrastructure, but it remains indistinguishable from traditional PSTN lines to callers.

Practical Usage and Business Relevance

Businesses in Luxembourg City often use 22 numbers to establish a local presence, particularly in the financial, legal, and EU-affiliated sectors concentrated in the capital. For callers, dialing a 22 number is treated as a standard fixed-line call, with tariffs depending on the caller's operator and subscription plan. International callers should verify rates with their provider, as charges vary. When dialing from a mobile phone within Luxembourg, no special prefix is required—simply enter the 8-digit national number. For those outside the country, using the +352 international prefix is essential, as omitting it will result in a failed call.