Area Code 2798 – Naganohara, Gunma

Overview of Area Code 2798

Area code 2798 is a geographic National Destination Code (NDC) within the Japanese numbering plan, assigned to the town of Naganohara in Gunma Prefecture. It serves the administrative district of Naganohara and its surrounding communities, including the popular resort area of Manza Onsen and the scenic Shirane Mountain region. The code is part of the larger Maebashi numbering area, but it is specifically allocated to the Naganohara exchange.

Geographic Coverage and Administrative Jurisdiction

Naganohara is a town located in the Agatsuma District of Gunma Prefecture, in the northern Kanto region of Japan. The area code 2798 covers the town's central business district, residential neighborhoods, and the mountainous areas that attract tourists year-round. The region is known for its hot springs, ski resorts, and outdoor recreational activities, making the code relevant for both local businesses and hospitality services.

Dialing Formats

When calling a landline in Naganohara from within Japan, you must dial the trunk prefix 0, followed by the area code 2798, and then the subscriber number. The full national number is 0-2798-XXXXX (where XXXXX is the 5-digit local number). For example, a local call to a business would be dialed as 02798-XXXXX.

From outside Japan, callers must use the international prefix (typically 00 or +), followed by Japan's country code 81, and then the area code without the leading zero. Thus, the international format for the same number would be +81-2798-XXXXX. For instance, a caller from the United States would dial 011 81 2798 XXXXX.

Overlay and Numbering Considerations

Currently, there is no overlay code for the Naganohara area; the 2798 code is exclusively used for this geographic region. However, as with all Japanese geographic codes, the number of digits in the subscriber number may vary depending on the specific exchange. In Naganohara, subscriber numbers are typically 5 digits, but some older lines might have 4 or 6 digits. Always confirm the exact number with the recipient.

Caller Instructions

For local callers within Naganohara, dialing the full national number (including the area code) is standard practice, even for calls within the same town. For callers from other parts of Japan, simply dial 02798 followed by the subscriber number. For international callers, remember to drop the leading zero and use the +81 country code. Be aware that calls to this geographic code are generally charged at standard domestic rates, but international rates may apply when calling from abroad.