Area Code 2744 – Fujioka, Gunma

Geographic Overview

The area code 2744 is a geographic National Destination Code (NDC) assigned to the city of Fujioka and its surrounding areas within Gunma Prefecture, Japan. Fujioka is located in the northwestern part of the Kanto Plain, approximately 100 kilometers from central Tokyo. The region is served by the NTT East network and is part of the larger Maebashi numbering area. The 0274 code covers not only Fujioka City but also adjacent municipalities such as Takasaki (partially), Kanra, and Shimonita towns, which are administratively under Gunma Prefecture.

Dialing Formats

For local callers within the same NDC area (0274), the subscriber number is dialed without the area code. For example, to call a Fujioka number from within the same region, you would dial just the 7-digit local number (e.g., 22-XXXX). However, when calling from outside the 0274 area (including from mobile phones or from other prefectures), the full national number must be used: 0274-XX-XXXX. International callers must replace the leading zero with Japan's country code +81, resulting in +81 274-XX-XXXX (or +81 2744 XXXXX when written without hyphens).

Numbering Structure

Japanese geographic numbers are 10 digits long when dialed nationally, including the trunk prefix '0'. Thus, a full national number for Fujioka is 0274-XX-XXXX, where the subscriber number is 7 digits. Internationally, the number is 11 digits including the country code, formatted as +81 274-XX-XXXX. The NDC length is 4 digits (0274), and the subscriber number length is 7 digits. This structure is consistent with ITU-T E.164 recommendations.

Overlay and Number Portability

Currently, there is no overlay code for the 0274 area; the code is exclusively used for geographic services. However, Japan implemented number portability for fixed-line services, allowing subscribers to retain their geographic numbers when switching between different fixed-line carriers, provided the service address remains within the same rate center. This means a number with the 0274 prefix may be served by an alternative carrier (e.g., a VoIP provider) while still being associated with the Fujioka geographic area.

Caller Instructions

For local callers within Fujioka: simply dial the 7-digit subscriber number. For callers from other parts of Japan: dial 0274 followed by the subscriber number. For international callers: dial your country's exit code (e.g., 011 from the US, 00 from most European countries), then Japan's country code 81, then the area code without the leading zero (274), and the subscriber number. For example, to call a Fujioka number 22-3456 from the US, you would dial 011 81 274 22 3456.

Practical Notes

When storing Japanese numbers in international format, always use the +81 prefix and drop the leading zero. For instance, a local number 0274-22-3456 becomes +81 274 22 3456. This format is essential for international dialing and for ensuring correct routing in mobile and VoIP networks.