Area Code 2404 – Alsdorf Rheinland
The phone area code for Alsdorf Rheinland is 2404 (international format +492404). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 2404
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Alsdorf Rheinland
Geographic Overview
The German area code 02404 is a geographic National Destination Code (NDC) assigned to the city of Alsdorf in the state of North Rhine-Westphalia (Nordrhein-Westfalen). Alsdorf is located in the Aachen region (Städteregion Aachen), near the borders with the Netherlands and Belgium. The code covers the city proper and its immediate suburban districts, including Mariadorf, Hoengen, and Begau. As a geographic number, 02404 is used for fixed-line PSTN and VoIP services, and numbers are allocated by the German Federal Network Agency (Bundesnetzagentur).
Dialing Formats
When calling an Alsdorf landline from within Germany, you must dial the national trunk prefix 0 followed by the area code and the subscriber number. The local subscriber numbers are typically 7 digits long, resulting in a total national significant number (NSN) length of 11 digits (including the leading 0). For example, a local number might be 02404 1234567.
For international callers, the German country code +49 replaces the leading 0. Thus, the same number would be dialed as +49 2404 1234567 from outside Germany. Note that the trunk prefix 0 is not used when dialing from abroad.
Caller Instructions
- Local callers (within Alsdorf): If you are calling from a fixed line within the same area code, you may be able to dial just the 7-digit subscriber number without the area code, depending on your local exchange configuration. However, for clarity and to avoid issues with number portability, it is recommended to always dial the full number with the area code.
- National callers (from other German cities): Dial 02404 followed by the subscriber number. Example: 02404 7654321.
- International callers: Dial your country's international access prefix (e.g., 00 from most European countries, 011 from the US/Canada), then 49, then 2404 (without the leading 0), and then the subscriber number. Example: +49 2404 7654321.
Overlays and Numbering
Currently, there is no overlay code for 02404; the area code is exclusively used for Alsdorf and its immediate surroundings. However, due to number portability, a number with the 02404 prefix may be routed to a mobile or VoIP service, but the geographic rate still applies when calling from a fixed line. Always verify the number's current operator if you are unsure.