Area Code 2558 – Horstmar

Geographic Overview

The German area code 02558 is a geographic destination code assigned to the town of Horstmar, located in the western part of North Rhine-Westphalia, within the Münsterland region. Horstmar is a small town (population approx. 6,500) near the larger cities of Steinfurt and Münster. The code covers the municipal area of Horstmar, including its core town and any associated districts or hamlets that fall within its administrative boundary.

Dialing Formats

When calling a Horstmar number from within Germany, you must use the national trunk prefix 0 followed by the area code and the subscriber number. The subscriber number length for 02558 is typically 6 to 7 digits, resulting in a total national significant number (NSN) length of 10 or 11 digits (excluding the leading trunk prefix). For example, a local number might be dialed as 02558 123456.

From outside Germany, callers must use the international access code (00 or +), then the German country code 49, followed by the area code 2558 (without the leading zero) and the subscriber number. For instance, a call from the United States would be dialed as 011 49 2558 123456 or +49 2558 123456 from a mobile phone.

Local vs. International Caller Instructions

For callers within the local dialing area (i.e., within Horstmar or the immediate vicinity), it may be possible to dial just the subscriber number without the area code, depending on the specific local network configuration. However, for all calls from outside the local exchange area but still within Germany, the full national format with the trunk prefix is required. International callers must always include the country code and drop the leading zero of the area code.

Overlay and Numbering Considerations

As of the latest ITU-T E.164 national numbering plan updates, there is no overlay code for 02558. The area code is exclusively assigned to Horstmar and is not shared with neighboring towns. This simplifies dialing and avoids the need for ten-digit dialing within the region. However, callers should always verify the subscriber number length, as some numbers may be 6 or 7 digits.

Practical Usage

Businesses and residents in Horstmar use this code for all fixed-line services, including PSTN and VoIP lines that are registered to a physical address in the area. When listing a Horstmar number on websites or business cards, it is common to display it in the international format, e.g., +49 2558 123456, to facilitate calls from abroad. For any number portability concerns, note that geographic numbers can be ported to other providers but remain associated with the original geographic location for routing purposes.