Area Code 2473 – Ishikawa, Fukushima

Overview of Area Code 2473

Area code 2473 is a geographic National Destination Code (NDC) within the Japanese numbering plan, assigned to the city of Iwaki and its surrounding municipalities in the southern part of Fukushima Prefecture. Despite the label 'Ishikawa, Fukushima' sometimes appearing in databases, the code specifically serves the Iwaki region, including the former Ishikawa District towns of Ishikawa, Tamakawa, and Hirata, as well as the city of Iwaki itself. This area is located on the Pacific coast of Honshu, approximately 200 kilometers north of Tokyo.

Geographic Coverage and Administrative Jurisdiction

The 2473 area code covers the following administrative areas:

• Iwaki City (いわき市) – the largest city in the Hamadori coastal region.
• Ishikawa Town (石川町) – a town in Ishikawa District.
• Tamakawa Village (玉川村) – a village in Ishikawa District.
• Hirata Village (平田村) – a village in Ishikawa District.

These areas fall under Fukushima Prefecture, which is part of the Tohoku region. The code is distinct from the 246 area code used for other parts of Fukushima, such as Koriyama and Sukagawa.

Dialing Formats and Caller Instructions

Within Japan, calls to numbers in the 2473 area code require dialing the trunk prefix '0' followed by the area code and the subscriber number. The local subscriber number length is typically 6 digits, making the total national significant number (NSN) 10 digits (0-2473-XX-XXXX). For example, a local call to a business in Iwaki would be dialed as 02473-12-3456.

For international callers, the Japanese country code (+81) replaces the leading '0'. Thus, the same number would be dialed as +81 2473-12-3456 from outside Japan. It is important to note that the leading '0' is not included when dialing from abroad.

Local calls within the same area code do not require the area code; however, due to the geographic spread, some adjacent areas may require the full number. Always check with your local carrier for specific dialing instructions.

Overlay and Numbering Considerations

As of the latest ITU-T E.164 data, there is no overlay plan for area code 2473. The code is not subject to number portability restrictions for geographic numbers, but mobile number portability (MNP) does not affect landline numbers. For VoIP services, the geographic nature of the code is preserved, meaning that a VoIP number with a 2473 prefix is associated with the Iwaki area, which may affect emergency services routing.

For businesses, having a 2473 number establishes a local presence in the Iwaki region, which can be beneficial for customer trust and local marketing. The code is managed by the Ministry of Internal Affairs and Communications (MIC) in Japan, and allocation is handled by NTT East and other designated carriers.