Area Code 249 – Oslo
The phone area code for Oslo is 249 (international format +47249). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 249
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Oslo
Geographic Coverage and Administrative Jurisdiction
The +47 249 prefix is a geographic numbering resource allocated within the Oslo numbering area of Norway. Administratively, it falls under the jurisdiction of the Norwegian Communications Authority (Nkom), which oversees the national numbering plan in accordance with ITU-T E.164 recommendations. The prefix serves the central and eastern districts of Oslo, including major business and residential zones. It is used for fixed-line PSTN and VoIP services, and it is not associated with mobile or nomadic services.
Dialing Formats and Caller Instructions
For local callers within Norway, the number is dialed in the national format as 24 49 xx xxx, where the leading '0' is not used. For international callers, the full E.164 format must be used: +47 24 49 xx xxx. This prefix is part of the Oslo geographic area code group, which includes 21, 22, 23, 24, and 40 (the latter is used for mobile services). When calling from abroad, you must replace the international access code (e.g., 00 or +) with the country code 47, followed by the eight-digit subscriber number. There is no separate trunk prefix for international calls from Norway; the country code is used directly.
Overlay and Numbering Plan Considerations
Oslo does not use overlay codes; the geographic area is served by a single area code, 2, which is followed by a two-digit exchange code (such as 49) and a five-digit subscriber number. This results in a total national significant number length of eight digits. The 249 prefix is specifically used for fixed-line services, and number portability allows subscribers to retain their numbers when switching operators, but the geographic significance remains tied to the original location. For VoIP services, the prefix may be used for fixed-line replacement services, but the physical location of the caller may not correspond to the geographic area, which is a common characteristic of modern telephony.
Practical Examples
- Local call (within Norway): 24 49 12 345
- International call (from abroad): +47 24 49 12 345
When dialing from a mobile phone, the same format applies. It is important to note that calls to geographic numbers are typically charged at standard national rates, but the cost may vary depending on the caller's operator and subscription plan. For businesses, having a local Oslo number can enhance local presence and customer trust.