Area Code 2640 – Howald

Geographic Overview

The +352 2640 prefix is a geographic number range assigned to the locality of Howald, a major residential and commercial area situated in the commune of Hesperange, in the southern-central part of Luxembourg. Howald is part of the capital district, lying just a few kilometers south of Luxembourg City, and is well-connected by public transport and major roadways. The prefix serves fixed-line subscribers within this specific exchange area, which is characterized by a mix of private residences, corporate offices, and retail establishments.

Dialing and Number Format

In Luxembourg, the national numbering plan follows the ITU-T E.164 standard, with a single country code (+352) and no trunk prefix. All national subscriber numbers, including those under the 2640 prefix, have a total length of nine digits when dialed in international format. The local number format for Howald is +352 2640 XX XX (or 2640 XX XX when dialed domestically). The prefix itself is a four-digit National Destination Code (NDC) that identifies the geographic exchange, followed by a four-digit subscriber number.

For local callers within Luxembourg, dialing the eight-digit national number is sufficient. For international callers, the full international format must be used: +352 2640 XX XX. When dialing from a mobile phone, ensure that the plus sign (+) is used to indicate the international access code, followed by the country code and the national number.

Geographic Allocation and Regulatory Notes

The 2640 prefix is a geographic allocation under the authority of the Luxembourg Institut Luxembourgeois de Régulation (ILR). It is reserved for fixed-line services and is not portable to mobile networks. Subscribers in Howald may have the option to retain their number when moving within the same geographic area, but number portability across different geographic regions is subject to regulatory conditions. Overlay codes are not currently in use for this area, meaning that the 2640 prefix uniquely identifies the Howald exchange.

Caller Instructions

• Local callers (within Luxembourg): Dial the eight-digit national number: 2640 XX XX.
• International callers: Dial the international access prefix (e.g., 00 from most countries), followed by Luxembourg's country code 352, and then the eight-digit national number: +352 2640 XX XX.
• VoIP and mobile users: Always use the international format with the plus sign to ensure proper routing.

As with all geographic numbers in Luxembourg, calls to 2640 numbers are typically charged at standard fixed-line rates, depending on the caller's operator and subscription plan. It is advisable to check with your service provider for specific tariffs.