Area Code 217 – Oslo
The phone area code for Oslo is 217 (international format +47217). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 217
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Oslo
Overview of Area Code 217 (Oslo)
Area code 217 is a geographic National Destination Code (NDC) within the Norwegian telephone numbering plan, allocated to the capital city of Oslo and its immediate surrounding areas. As part of the +47 country code, Norway does not use trunk prefixes; instead, the full national significant number (NSN) is dialed directly. For Oslo, the NSN is 8 digits long, with the first three digits (217) identifying the geographic exchange area. This code is assigned to fixed-line PSTN and VoIP services, and it is used by both residential and business subscribers within the Oslo metropolitan region.
Coverage and Administration
The 217 code covers the central and eastern districts of Oslo, including major administrative and commercial hubs such as Sentrum, Grünerløkka, Gamle Oslo, and surrounding neighborhoods. The Norwegian Communications Authority (Nkom) oversees the allocation of numbering resources, and Telenor, Telia, and other licensed operators manage the underlying exchanges. The geographic nature of the code means that the physical location of the line is tied to the Oslo exchange, although number portability allows subscribers to retain their 217 number when moving to other operators, even if the service is provided over VoIP.
Dialing Formats
- National dialing (within Norway): Dial the full 8-digit number, e.g., 217 12 345. No trunk prefix is required.
- International dialing (from abroad): Dial the international access prefix (00 or +), then the country code 47, followed by the 8-digit number, e.g., +47 217 12 345.
When calling from a mobile phone, the same format applies. It is important to note that the leading '2' in 217 is not a trunk prefix but an integral part of the NDC.
Overlay and Numbering Considerations
Oslo has multiple area codes (e.g., 21, 22, 23, 24, and 217), which are part of a closed numbering plan. There is no local dialing truncation; all calls within Norway require the full 8-digit number. This simplifies dialing for both local and long-distance callers. The 217 code is not an overlay in the traditional sense; rather, it is one of several codes serving the same geographic area, allowing for a larger pool of numbers.
Caller Instructions
For local callers: Simply dial the 8-digit number. For international callers: Replace the leading '0' (if any) with the international prefix, but since Norway uses no trunk prefix, just dial +47 followed by the number. Ensure you use the correct exit code from your country (e.g., 011 from the US, 00 from most European countries).
As with all Norwegian geographic numbers, calls to 217 are typically charged at standard fixed-line rates, which may vary depending on your operator and subscription plan. VoIP users may have different tariffs, but the number remains tied to the Oslo geographic area for emergency services and caller identification purposes.