Area Code 4258 – Gummern
The phone area code for Gummern is 4258 (international format +434258). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 4258
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Gummern
Geographic Overview
The Austrian area code +43 4258 is a geographic National Destination Code (NDC) assigned to the village of Gummern and its immediate surroundings in the federal state of Carinthia (Kärnten). Gummern is a small settlement located near the town of Arnoldstein, in the district of Villach-Land, close to the borders with Italy and Slovenia. The code serves a predominantly rural area, with local businesses, residential lines, and administrative offices relying on this prefix for fixed-line PSTN and VoIP services.
Dialing Formats
When calling a Gummern number from within Austria, subscribers must use the national trunk prefix 0 followed by the area code and the subscriber's local number. For example, a local number such as 1234 would be dialed as 0 4258 1234 from any other part of Austria. From abroad, callers must omit the leading zero and use the international prefix, resulting in +43 4258 1234 (or 0043 4258 1234 from most European countries).
Numbering Plan Details
In the Austrian numbering plan, geographic area codes can vary in length, and subscriber numbers may have between 4 and 7 digits. For the 4258 area, the total length of the national significant number (NSN) is typically 9 to 10 digits, including the area code. The prefix is allocated to fixed-line services, and as per ITU-T E.164 guidelines, it is not portable to mobile networks, meaning that a number with this prefix will always be associated with a fixed location.
Caller Instructions
- Local callers within Gummern may be able to dial the subscriber number without the area code, depending on the local exchange configuration. However, it is always safe to use the full national format.
- Domestic callers from other Austrian regions must dial 0 4258 followed by the local number.
- International callers should replace the leading zero with the country code +43 and dial +43 4258 followed by the local number.
For VoIP users, the same dialing rules apply, but ensure that your service provider allows international calls to Austrian geographic numbers. There are no known overlay codes for this area, and the number range is administered by the Austrian Regulatory Authority for Broadcasting and Telecommunications (RTR-GmbH).