Area Code 150 – Katrineholm
The phone area code for Katrineholm is 150 (international format +46150). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 150
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Katrineholm
Geographic Overview
The Swedish area code +46 150 is a geographic National Destination Code (NDC) assigned to the Katrineholm local exchange area, located in Södermanland County in the southeastern part of central Sweden. This numbering area encompasses the municipality of Katrineholm and its surrounding localities, including the urban center of Katrineholm itself, as well as smaller communities such as Valla, Sköldinge, and Björkvik. The region is part of the historic province of Södermanland and serves as a key transport hub, with the Svealand and Västra stambanan railway lines converging in the city.
Dialing Formats
For callers within Sweden, the national trunk prefix 0 is used before the area code, followed by the subscriber number. The complete national format is 0150-XXXXX, where the subscriber number typically consists of 5 to 7 digits, depending on the specific line and the historical allocation. For international callers, the Swedish country code +46 replaces the leading zero, resulting in the format +46 150 XXXXXX. When dialing from abroad, the area code is used without the trunk prefix, and the subscriber number is appended directly after the NDC.
Local and International Calling Instructions
Local callers within the Katrineholm area can often dial the subscriber number without the area code, provided they are within the same local calling area. However, for clarity and to avoid misdialing, it is recommended to always include the area code when dialing from a mobile phone or from outside the immediate exchange area. International callers should replace the leading zero with the +46 country code and omit any additional prefixes. For example, a Katrineholm number formatted as 0150-12345 would be dialed as +46 150 12345 from outside Sweden.
Numbering and Regulatory Notes
Sweden's numbering plan is regulated by the Swedish Post and Telecom Authority (PTS). Geographic area codes like 150 are allocated to fixed-line services, but due to number portability, a subscriber may retain their number when switching operators, including to VoIP or mobile services. This means that a number with the 150 prefix is not necessarily tied to a physical location, although it was originally assigned to the Katrineholm area. Overlays and number expansion have been implemented in some Swedish regions, but the 150 area has not been subject to significant overlay changes, maintaining its traditional subscriber number lengths.