Area Code 9952 – Okuchi, Kagoshima

Geographic Scope and Administrative Jurisdiction

The area code 9952 is a geographic National Destination Code (NDC) assigned to the city of Okuchi, located in the northern part of Kagoshima Prefecture on the island of Kyushu, Japan. This code covers the former city of Okuchi, which was merged into the city of Isa in 2005. The service area includes the central urban district of Isa, as well as surrounding rural communities and mountainous terrain. The code is administered under the Japanese Ministry of Internal Affairs and Communications (MIC) and is allocated to Nippon Telegraph and Telephone (NTT) East/West for fixed-line PSTN services.

Dialing Formats and Caller Instructions

For local callers within the Okuchi area (i.e., those dialing from another number with the 09952 prefix), the national significant number is 8 digits, and the local number is 6 digits. The full national dialing format is 09952-XX-XXXX. When calling from outside the Okuchi area but still within Japan, callers must dial the trunk prefix 0 followed by the area code 9952 and the subscriber number: 0-9952-XX-XXXX. For international callers, the country code for Japan is +81, and the leading zero of the area code is dropped. The international format is +81-9952-XX-XXXX. For example, a local number such as 12-3456 would be dialed as 09952-12-3456 domestically and as +81 9952 12 3456 from abroad.

Overlay and Numbering Considerations

As of the latest MIC numbering plan, there is no overlay code for the Okuchi area; the 09952 code is exclusive to this geographic region. However, the area code is part of the larger Kagoshima numbering group, which includes codes such as 099 (Kagoshima City) and 0995 (Satsumasendai). The subscriber number length is 6 digits, making the total national significant number 8 digits (excluding the trunk prefix). This is consistent with the Japanese numbering plan, which uses variable NDC lengths to accommodate regional demand. No changes to the area code are planned, and the code remains active for all fixed-line services, including ISDN and some VoIP services that are assigned geographic numbers.

Practical Information for Callers

When placing a call to Okuchi from a mobile phone in Japan, the same national format (0-9952-XX-XXXX) is used. For international callers, it is essential to replace the leading zero with the +81 country code. Calls to this area code are typically charged at domestic fixed-line rates when dialed from within Japan, but international rates apply from abroad. For businesses or individuals requiring a presence in the Okuchi area, obtaining a local number with the 09952 prefix can enhance local trust and accessibility. Always verify the complete number, as the 6-digit subscriber number is required for successful connection.