Area Code 2423 – Mondorf-les-Bains/Bascharage/Noerdange/Remich

Geographic Coverage and Administrative Jurisdiction

The +352 2423 numbering range is a geographic allocation within the Luxembourg national numbering plan, administered by the Institut Luxembourgeois de Régulation (ILR). Unlike mobile or non-geographic prefixes, 2423 is tied to a specific set of localities in the southern and western parts of the Grand Duchy. The primary service areas include the towns of Mondorf-les-Bains (canton of Remich), Bascharage (commune of Käerjeng, canton of Capellen), Noerdange (commune of Beckerich, canton of Redange), and Remich (canton of Remich). This prefix is used for fixed-line PSTN and VoIP services that are registered to these communities, although number portability may allow a subscriber to retain the number when moving within Luxembourg.

Dialing Formats and Caller Instructions

Within Luxembourg, calls to a 2423 number are placed using the national format: 2423 xxx xx (the full number is 9 digits, including the leading '2' of the prefix). No trunk prefix '0' is used in Luxembourg. For international callers, the ITU-T E.164 format applies: +352 2423 xxx xx. When dialing from abroad, replace the '+' with your country's international access code (e.g., '00' from most European countries, '011' from North America). For example, to call a fixed line in Mondorf-les-Bains from the United States, you would dial 011 352 2423 xxx xx. Local callers should note that all geographic numbers in Luxembourg are 9 digits long, and the prefix '2423' is an integral part of the subscriber number.

Overlay and Numbering Plan Considerations

Luxembourg does not use area codes in the traditional sense; the entire country uses a single national destination code (NDC) of '2' for geographic fixed-line services. The prefix '2423' is part of the subscriber number, not a separate trunk code. There are no overlay codes in Luxembourg, as the country's numbering plan is closed and does not require additional digits for local calls. The ILR has implemented number portability, so a 2423 number may not necessarily be physically located in the listed areas if the subscriber has moved and ported the number.

Services and Usage

Numbers under 2423 are typically used for residential and business fixed-line services, including PSTN and VoIP. They are also used for fax and alarm systems. Because these are geographic numbers, tariffs for calling them are generally lower than mobile rates, and they are included in many international calling plans. If you are a business seeking a local presence in these communes, a 2423 number can enhance trust and accessibility for local customers.