Area Code 2364 – Oslo

Overview of Area Code 2364

Area code 2364 is a geographic prefix within the Norwegian national numbering plan, specifically allocated to the capital region of Oslo. In the international E.164 format, this code is expressed as +47 2364, where +47 is Norway's country calling code. The prefix is part of the 2xxx range, which designates fixed-line services in the Oslo metropolitan area. Subscriber numbers associated with 2364 typically have a total length of 8 digits when dialed nationally (including the area code), and 11 digits internationally (including the country code).

Geographic Coverage and Administrative Jurisdiction

The 2364 prefix serves the central and eastern districts of Oslo, including neighborhoods such as Grünerløkka, Gamle Oslo, and parts of the city center. Oslo is the administrative capital of Norway and the hub of its political, economic, and cultural life. The numbering area is managed by the Norwegian Communications Authority (Nkom), which oversees the allocation of geographic numbers to local operators. As a geographic code, 2364 is tied to a specific physical exchange, although modern VoIP and fixed-line services may route calls over IP backbones.

Dialing Formats and Caller Instructions

National dialing (within Norway): To call a number with prefix 2364 from another part of Norway, dial the 8-digit subscriber number directly, e.g., 2364 1234. The leading '0' is not used in Norway; the area code is an integral part of the number.

International dialing (from abroad): Callers outside Norway must dial the international access prefix (e.g., 00 from most European countries, 011 from North America), followed by Norway's country code 47, and then the 8-digit subscriber number. For example, from the United States, dial 011 47 2364 1234. Do not add any extra digits after the country code.

Local calls within Oslo: Since Norway uses closed numbering, local calls also require the full 8-digit number. There are no separate local dialing prefixes.

Overlay and Number Portability Considerations

Oslo has multiple area codes (e.g., 21, 22, 23, 24, and others) that overlay the same geographic region. This means that a subscriber may retain a 2364 number even if they move to a different part of Oslo, due to number portability. However, the prefix does not guarantee a physical location; it only indicates the original assignment. For emergency services, always dial 110 (fire), 113 (medical), or 112 (police) regardless of the prefix.

Practical Examples

• Local caller in Oslo: 2364 5678
• Caller from Bergen (Norway): 2364 5678
• Caller from London (UK): 00 47 2364 5678
• Caller from New York (USA): 011 47 2364 5678

When storing numbers in international format, always use +47 2364 5678 to ensure compatibility across global systems.