Area Code 644 – Hammerdal
The phone area code for Hammerdal is 644 (international format +46644). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 644
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Hammerdal
Geographic Overview and Jurisdiction
The Swedish area code 0644 (international format +46 644) is a geographic National Destination Code (NDC) assigned to the locality of Hammerdal, situated in the historical province of Jämtland in central Sweden. Administratively, Hammerdal is part of Strömsund Municipality within Jämtland County (Region Jämtland Härjedalen). The code serves the town of Hammerdal and its surrounding rural districts, including smaller villages and settlements within the municipality's eastern portion. Geographically, this region lies near the Norwegian border, characterized by extensive forests and lakes, with a sparse population density typical of inland Norrland.
Dialing Formats and Usage
When calling a landline in Hammerdal from within Sweden, the national trunk prefix 0 is used, followed by the area code and the subscriber number. The complete national format is 0644-XXXXX, where the subscriber number typically consists of five digits, resulting in a total national significant number length of nine digits (excluding the leading zero). For international callers, the country code +46 replaces the trunk prefix, and the area code is written without the leading zero, yielding the format +46 644 XXXXX.
Local calls within the Hammerdal exchange area may be dialed using only the five-digit subscriber number, depending on the operator's dialing plan. However, for calls originating from other Swedish regions or from abroad, the full national or international format is mandatory.
Overlay and Numbering Plan Considerations
As of the latest ITU-T E.164 national numbering plan updates, the 0644 area code is not part of an overlay complex. The Swedish Post and Telecom Authority (PTS) has not introduced any overlay codes for this rural exchange, meaning that the area code remains unique to the Hammerdal service area. Subscriber numbers within this code are allocated by local operators, and number portability applies, allowing users to retain their numbers when switching providers, though geographic portability is restricted to the same exchange area.
Caller Instructions
For domestic callers outside Hammerdal, dial 0644 followed by the five-digit subscriber number. For international callers, dial the international access prefix (e.g., 00 from most countries), then 46, then 644, and finally the subscriber number, omitting the leading zero of the area code. For example, to reach a subscriber with the number 12345, an international caller would dial +46 644 12345. It is important to note that this code is exclusively for fixed-line services; mobile numbers in Sweden use non-geographic prefixes beginning with 7, and are not affected by this area code.