Area Code 175 – Hallstavik-Rimbo

Geographic Coverage and Administrative Jurisdiction

The Swedish area code 175 is a geographic National Destination Code (NDC) assigned to the northern part of Stockholm County, specifically serving the localities of Hallstavik and Rimbo, along with their surrounding rural areas. This region falls under the administrative jurisdiction of Norrtälje Municipality, which is part of the Stockholm metropolitan area but retains a distinctly provincial character. The code covers a sparsely populated area known for its coastal landscapes, forests, and small communities.

Dialing Formats and Caller Instructions

When calling a subscriber within the 175 area from within Sweden, the national trunk prefix 0 must be dialed before the area code, followed by the local subscriber number. The complete national format is 0 175 XX XX XX. For callers from outside Sweden, the international access prefix (typically + or 00) is used, followed by the Swedish country code 46, the area code without the leading trunk prefix, and the subscriber number. The international format is +46 175 XX XX XX. For example, a local call to a number in Hallstavik would be dialed as 0175-XX XX XX from within Sweden, while a caller from the United States would dial 011 46 175 XX XX XX.

Number Structure and Overlay Considerations

Swedish geographic numbers typically consist of 7 to 8 digits in total, including the area code. For the 175 area, the local subscriber number is 5 digits long, resulting in an 8-digit national significant number when combined with the area code. There is currently no overlay plan for this area code, meaning that local calls within the same area do not require the area code. However, as Sweden transitions to all-dialing (mandatory area code dialing even for local calls), it is advisable to always use the full national format to ensure compatibility.

Service Providers and Number Portability

Historically, the 175 area was served by the incumbent operator Telia, but today, subscribers can choose from a variety of telecom operators offering fixed-line services, including fiber-based VoIP and traditional PSTN. Number portability is fully supported, allowing customers to retain their existing numbers when switching providers. This means that the prefix does not necessarily indicate the current service provider, but rather the geographic location of the exchange.

Practical Tips for Callers

• Local callers: Dial the 5-digit subscriber number directly if calling within the same area code.
• National callers: Dial 0175 followed by the subscriber number.
• International callers: Dial +46 175 followed by the subscriber number, omitting the leading zero.