Area Code 249 – Koriyama, Fukushima

Overview of Area Code 249

Area code 249 is a geographic numbering plan area within the Japanese telephone numbering system, specifically serving the city of Koriyama and its surrounding municipalities in Fukushima Prefecture. Koriyama is the commercial and transportation hub of the Tohoku region, with a population exceeding 320,000. The area code covers the central and eastern parts of Fukushima Prefecture, including the cities of Koriyama, Sukagawa, and Tamura, as well as the towns of Miharu, Ono, and Hirata. The numbering area is administered under the Ministry of Internal Affairs and Communications (MIC) and follows the ITU-T E.164 standard for international dialing.

Dialing Formats

When calling a landline in the Koriyama area from within Japan, the national trunk prefix '0' is used, followed by the area code '249' and the subscriber number. For example, a local number such as 123-4567 would be dialed as 0249-123-4567 from outside the area. From within the same area code, callers may omit the area code and dial only the subscriber number, depending on the local dialing plan. However, for clarity and to avoid misdials, it is recommended to always include the area code.

For international callers, the Japanese country code (+81) replaces the leading '0'. Thus, the same number would be dialed as +81 249 123 4567 from overseas. The area code is not separated by a hyphen in international format; the plus sign indicates the international access code, and the number is presented as a continuous string after the country code.

Geographic Coverage and Administrative Jurisdiction

The 249 area code is assigned to the Koriyama urban area, which is part of the Nakadori region in the central part of Fukushima Prefecture. The region is known for its industrial parks, educational institutions, and as a major railway junction. The area code boundaries align with the municipal boundaries of the cities and towns listed above, as defined by the MIC's numbering plan. Since the implementation of the 10-digit dialing system in Japan, no overlay codes have been introduced in this area, and the subscriber numbers are typically seven digits long.

Caller Instructions

• Local callers (within the 249 area): Dial the 7-digit subscriber number directly (e.g., 123-4567).
• National callers (from other areas in Japan): Dial 0249 followed by the subscriber number (e.g., 0249-123-4567).
• International callers: Dial the international access code (e.g., 011 from the US), then Japan's country code 81, then the area code without the leading zero (249), and the subscriber number (e.g., 011-81-249-123-4567).

For mobile or VoIP users, the same dialing rules apply, but note that calls to landlines may incur different charges depending on the carrier. Always check with your service provider for specific rates.