Area Code 2794 – Shibukawa, Gunma

Overview of Area Code 2794

Area code 2794 is a geographic National Destination Code (NDC) within the Japanese telephone numbering plan, assigned to the city of Shibukawa and its surrounding areas in Gunma Prefecture. Located in the northern Kanto region of Japan’s main island, Shibukawa is known for its hot springs and the Ikaho Onsen resort area. The code 2794 is part of the larger Maebashi numbering area, which historically covered the central and western parts of Gunma Prefecture.

Geographic Coverage and Administrative Jurisdiction

The 2794 area code serves the city of Shibukawa, including the former towns of Ikaho, Komochi, and Onogami, which were merged into Shibukawa in 2006. It also covers parts of the neighboring towns of Yoshioka and Shinto in Kitagunma District. The administrative jurisdiction falls under Gunma Prefecture, with Shibukawa City Hall as the primary local government body. The region is characterized by a mix of residential, commercial, and tourist-oriented businesses, particularly around the Ikaho Onsen area.

Dialing Formats and Caller Instructions

Within Japan, calls to Shibukawa numbers require dialing the trunk prefix 0, followed by the area code 2794, and the subscriber number, which is typically 4 to 5 digits long. The full domestic format is 0-2794-XX-XXXX. For example, a local call to a Shibukawa number would be dialed as 02794-XX-XXXX. When calling from outside Japan, the international access code (e.g., 011 from the US, 00 from most countries) is used, followed by Japan’s country code 81, then the area code without the leading zero: +81-2794-XX-XXXX. For instance, a caller from the United States would dial 011-81-2794-XX-XXXX.

Overlay Considerations and Numbering

Currently, there is no overlay code for the 2794 area. The numbering area is served exclusively by 2794, and no additional NDCs have been assigned to the same geographic region. However, in some neighboring areas, such as Maebashi (27) and Takasaki (27), overlay codes have been introduced to accommodate growing demand. For Shibukawa, the existing 2794 code remains sufficient, and no changes are planned. Callers should note that when dialing within the same area code, the area code may be omitted for local calls, but it is always required for calls from other regions.

Practical Examples and Usage

For a local business in Shibukawa, the number might be 02794-XX-XXXX. A customer in Tokyo would dial 02794-XX-XXXX (domestic long distance). An international caller from the UK would dial 00-81-2794-XX-XXXX. It is important to remember that the leading zero is dropped when using the international format. The 2794 area code is used for fixed-line services, including PSTN and VoIP services, and is not associated with mobile numbers, which in Japan begin with 070, 080, or 090.