Area Code 2436 – Hesperange/Kockelscheuer/Roeser

Geographic Scope and Administrative Jurisdiction

The +352 2436 prefix is a geographic National Destination Code (NDC) assigned within the Luxembourgish public switched telephone network (PSTN). It serves the southern-central communes of Hesperange, Kockelscheuer, and Roeser, all located in the canton of Luxembourg, immediately south of Luxembourg City. These areas form part of the country's primary urban agglomeration, with Hesperange and Roeser functioning as residential and light-industrial suburbs, while Kockelscheuer is known for its recreational facilities and conference center. The prefix is administered by the Institut Luxembourgeois de Régulation (ILR), the national regulatory authority, and is allocated to fixed-line services, including traditional PSTN and Voice over IP (VoIP) connections that are registered to a physical address within the covered communes.

Dialing Formats and Number Structure

Luxembourg uses a closed numbering plan, meaning the full national number must always be dialed, even for local calls. The national number for this prefix consists of the NDC (2436) followed by a subscriber number of variable length, typically 3 to 5 digits, resulting in a total national number length of 7 to 9 digits. For example, a local subscriber number might be 12345, making the complete national number 2436 12345. When calling from abroad, the international format requires the Luxembourg country code +352, followed by the full national number without any leading zero (Luxembourg does not use trunk prefixes). Thus, the international dialing format is +352 2436 12345. For local callers within Luxembourg, simply dial 2436 12345; no area code or trunk prefix is needed.

Overlays and Numbering Considerations

Luxembourg does not employ overlay codes in the traditional sense; instead, geographic numbers are assigned based on the physical location of the line. However, number portability allows subscribers to retain their 2436 numbers when moving to a different operator, but the number's geographic association remains tied to the original location. VoIP services may also be assigned 2436 numbers, but they are required to provide location information for emergency services (e.g., 112). Callers should note that calls to 2436 numbers are typically charged at standard fixed-line rates, which may vary depending on the caller's operator and any international tariffs if calling from abroad.

Caller Instructions

• Local callers (within Luxembourg): Dial the full national number, e.g., 2436 12345.
• International callers: Dial the international access prefix (e.g., 00 from most countries), then Luxembourg's country code 352, followed by the full national number without any leading zero: 00 352 2436 12345.
• Emergency services: Always dial 112, regardless of the prefix.

This prefix is part of Luxembourg's fixed-line infrastructure, supporting both residential and business customers in the southern communes. Its geographic allocation ensures that calls are routed efficiently within the national network.