Area Code 531 – Bengtsfors

Overview of Area Code 531 (Bengtsfors, Sweden)

Area code 531 is a geographic destination code within the Swedish national numbering plan, administered by the Swedish Post and Telecom Authority (PTS) in accordance with ITU-T E.164 recommendations. It serves the Bengtsfors Municipality in the western part of the country, within the historical province of Dalsland and the administrative county of Västra Götaland. The code covers the central town of Bengtsfors and its surrounding localities, including Dals Långed, Bäckefors, and Billingsfors, as well as smaller settlements along the Dalsland Canal.

Geographically, the region is characterized by its forested landscape and numerous lakes, bordering Norway to the west. The area code is allocated for fixed-line (PSTN) services, though some VoIP providers may also use it for numbers that are not tied to a physical address. However, the prefix remains fundamentally geographic, meaning that the tariff and routing are based on the destination's location.

Dialing Formats and Procedures

When placing a call to a subscriber within the 531 area code, the national trunk prefix 0 is used before the area code. The national significant number (NSN) consists of the area code (531) followed by a subscriber number of 5 to 7 digits, resulting in a total NSN length of 8 to 10 digits. For example, a local number might be written as 0531-XXXXX in national format.

For international callers, the Swedish country code +46 replaces the leading zero. Thus, the same number would be dialed as +46 531 XXXXX (omitting the initial 0). It is important to note that the area code is not separated by a dash in international dialing; the entire NSN is dialed after the country code.

Local calls within the 531 area code may be made using only the subscriber number, depending on the operator's dialing plan, but this is not standardized across all networks. For calls from other Swedish area codes, dial the trunk prefix 0, then 531, followed by the subscriber number. For calls from abroad, always use the international prefix (e.g., 00 from most European countries) followed by 46 and then the NSN without the leading 0.

Overlays and Numbering Changes

As of the latest PTS updates, there is no overlay code for the 531 area. The numbering area remains exclusively assigned to the Bengtsfors region. However, number portability allows subscribers to retain their 531 numbers when switching operators, even if they move outside the geographic area, which can occasionally lead to non-geographic usage. Nevertheless, for the purpose of routing and charging, the code is still treated as geographic.

For businesses and residents, it is essential to display numbers in international format on websites and marketing materials to ensure accessibility for international clients: +46 531 XXXXX.