Area Code 248 – Oslo
The phone area code for Oslo is 248 (international format +47248). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 248
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Oslo
Geographic Overview
The +47 248 prefix is a geographic National Destination Code (NDC) assigned to the Oslo metropolitan area, Norway's capital and largest city. As part of the Norwegian numbering plan administered by the Norwegian Communications Authority (Nkom), this code routes calls to fixed-line subscribers within the central Oslo exchange areas. Oslo's numbering landscape is characterized by a mix of legacy 2-digit and 3-digit area codes, with 24x series specifically allocated to the inner city districts, including the Sentrum, Grünerløkka, and Majorstuen neighborhoods.
Dialing Formats and Usage
When calling a +47 248 number from abroad, the international format is +47 248 XX XXX, where the total subscriber number length is 8 digits (including the 3-digit prefix). Domestically, callers within Norway must dial the full 8-digit number without a trunk prefix, as Norway uses an open dialing plan with no leading '0'. For example, a local call to a number in Oslo would be placed as 248 XX XXX, while an international caller would dial +47 248 XX XXX.
These numbers are primarily used by businesses and residents with fixed-line connections from providers like Telenor, Telia, and Lyse Tele. The geographic nature of the prefix means that number portability may allow the subscriber to retain the number even if they move to a different operator, but the number remains associated with the Oslo rate center for routing and emergency services (110, 112, 113) identification.
Overlay and Regulatory Notes
Norway does not use overlay codes; instead, new numbers are allocated from existing NDCs when required. The 24x range is part of the original Oslo allocation, and no changes are anticipated in the near term. For callers, understanding that +47 248 is a geographic number helps set expectations regarding potential tariffs: calls to these numbers are typically priced as national or local calls, depending on the caller's own operator and subscription plan. For businesses, having a 248 number signals a physical presence in Oslo, which can be a trust factor for local customers. However, with the rise of IP-based communications, many such numbers are now delivered over VoIP, but the geographic association remains unchanged.