Area Code 1393 – Matsumae, Hokkaido

Overview of Area Code 1393

Area code 1393 is a geographic numbering plan area within the Japanese telephone numbering system, specifically assigned to the Matsumae region in the southern part of Hokkaido. This area code is part of the ITU-T E.164 international numbering plan, where Japan's country calling code is +81. When dialing internationally, callers must replace the leading zero with the country code, resulting in the format +81 1393-XX-XXXX for landline numbers.

Geographic Coverage and Administrative Jurisdiction

The 1393 area code serves the town of Matsumae and its surrounding areas, located in the Oshima Subprefecture of Hokkaido. Matsumae is historically significant as the northernmost castle town in Japan and is known for its scenic coastal location. The area code covers the administrative jurisdiction of Matsumae Town, which includes several smaller districts and communities. The region is primarily rural, with a population concentrated in the central town area.

Dialing Formats and Caller Instructions

Within Japan, calls to Matsumae numbers must be dialed using the national trunk prefix '0' followed by the area code and subscriber number. For example, a local call from another part of Japan would be dialed as 01393-XX-XXXX. The subscriber number length in this area code is typically 4 to 5 digits, making the total national significant number (NSN) 10 digits when including the area code.

For international callers, the dialing format is +81 1393-XX-XXXX. The leading zero of the area code is omitted when dialing from abroad. For instance, if the local number is 01393-2-3456, an international caller would dial +81 1393-2-3456. It is important to note that the plus sign (+) represents the international access code, which varies by country (e.g., 011 from the US, 00 from most European countries).

Overlay Considerations and Numbering Plan

As of the latest updates, there are no overlay codes for the 1393 area code, meaning that local calls within the Matsumae area do not require additional digits. The numbering plan is managed by the Ministry of Internal Affairs and Communications (MIC) in Japan, and number allocation is overseen by the Telecommunications Carriers Association (TCA). The area code is classified as a geographic code, and numbers are primarily used for fixed-line PSTN services, though some may be assigned to VoIP services that are location-independent but retain the geographic code for administrative purposes.

Callers should be aware that when dialing from mobile phones in Japan, the same national format (01393-XX-XXXX) applies. However, if the caller is outside the Matsumae area, they must include the area code. For emergency services, always dial 110 (police) or 119 (fire/ambulance) regardless of the area code.