Area Code 2194 – Oslo
The phone area code for Oslo is 2194 (international format +472194). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 2194
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Oslo
Geographic Coverage and Administrative Jurisdiction
The +47 2194 prefix is a geographic number range allocated within the Oslo numbering area of Norway. As part of the Norwegian National Destination Code (NDC) structure, 2194 falls under the 21 series, which is designated for the capital region. The prefix serves the central administrative districts of Oslo, including the city centre and surrounding urban boroughs. Subscribers assigned to this range are physically located within the Oslo metropolitan area, and the numbers are used for fixed-line PSTN services, as well as some VoIP-based fixed-line replacements.
Dialing Formats and Caller Instructions
For local callers within Norway, the number is dialed in its full national format: 21 94 xx xx. The leading '0' is not used in Norwegian domestic dialing, as the country uses a closed numbering plan with the country code +47. When calling from abroad, the international format must be used: +47 21 94 xx xx. Callers from outside Norway should replace the '+' with their international access prefix (e.g., 00 from most European countries). For example, a caller in the United States would dial 011 47 21 94 xx xx.
Numbering Plan and Overlay Considerations
Norway employs a closed numbering plan, meaning that all subscriber numbers, including those in the 2194 range, are eight digits long after the country code. The 21 prefix is part of a larger geographic numbering block for Oslo, which also includes 22, 23, and 24. There are no overlay codes in Norway; instead, the country uses a single nationwide country code +47, and geographic distinctions are made through the NDC. This simplifies dialing but requires that all numbers be dialed with the full NDC even for local calls.
Regulatory and Technical Notes
The Norwegian Communications Authority (Nkom) administers the national numbering plan. Numbers in the 2194 range are typically allocated to fixed network operators, but due to number portability, a subscriber may have moved to a different operator or technology (e.g., VoIP) while retaining the number. This means that the geographic association is not always a strict indicator of the physical location of the line. However, for emergency services and caller location purposes, the address associated with the number is maintained in operator databases.
Practical Usage
Businesses and residents in Oslo use 2194 numbers for local presence and customer service. For international callers, it is essential to use the correct international prefix and to note that calls to Norwegian fixed-line numbers are typically charged at standard international rates, unless the caller has a calling plan that includes Norway. As with all geographic numbers, the cost is determined by the caller's operator and the destination country.