Area Code 2655 – Iida, Nagano
The phone area code for Iida, Nagano is 2655 (international format +812655). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Iida, Nagano
Geographic Coverage and Administrative Jurisdiction
The area code 2655 is a geographic National Destination Code (NDC) assigned to the city of Iida and its surrounding areas in the southern part of Nagano Prefecture, Japan. This region falls under the administrative jurisdiction of the Iida City Office and includes neighboring towns such as Matsukawa, Takamori, and Achi. The code serves a predominantly mountainous area known for its agriculture and traditional crafts.
Dialing Formats and Number Structure
In the Japanese national numbering plan, the area code 2655 is used with subscriber numbers of four to five digits, resulting in a total local number length of eight digits (excluding the trunk prefix). When dialing within the same area code, callers can omit the area code and dial the subscriber number directly. For calls from other regions in Japan, the full national format is used: 0-2655-X-XXXX (where X represents the subscriber number digits). Internationally, callers must use the country code for Japan (+81) and drop the leading zero, resulting in the format +81-2655-X-XXXX.
Caller Instructions
- Local callers (within Iida area): Dial the subscriber number directly (e.g., 2-3456).
- Domestic callers from other parts of Japan: Dial 02655-2-3456 (trunk prefix 0, area code 2655, subscriber number).
- International callers: Dial your country's exit code, then 81 2655 2 3456 (no leading zero).
Overlay and Numbering Considerations
As of the latest ITU-T and MIC (Ministry of Internal Affairs and Communications) updates, there is no overlay code for the Iida area. The 02655 area code is unique to this region, and no number portability applies to geographic numbers in Japan, meaning that the prefix is tied to the physical location of the line. However, VoIP services may allow users to obtain a 02655 number regardless of their physical location, but such numbers are still considered geographic for routing purposes.
Practical Examples
For instance, a business in Iida might have the number 02655-3-4567. A caller from Tokyo would dial 02655-3-4567, while an international caller from the United States would dial 011 81 2655 3 4567. Understanding these formats ensures seamless connectivity for both residents and visitors to the scenic Iida region.