Area Code 9744 – Mie, Oita
The phone area code for Mie, Oita is 9744 (international format +819744). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Mie, Oita
Overview of Area Code 09744
Area code 09744 is a geographic National Destination Code (NDC) within the Japanese numbering plan, assigned to a specific rural region in Oita Prefecture on the island of Kyushu. Although the label includes 'Mie,' this is a common confusion: Mie Prefecture is located in the Kansai region, while 09744 is firmly allocated to Oita. The code serves the town of Kokonoe and its surrounding areas, including parts of the Kusu District. This is a classic example of Japan's geographic numbering structure, where prefixes are tied to administrative boundaries.
Geographic Coverage and Administrative Jurisdiction
The 09744 code covers the municipality of Kokonoe-machi, which is situated in the western part of Oita Prefecture, bordering Kumamoto Prefecture. The area is known for its mountainous terrain and hot springs, such as the famous Sujiyu Onsen. The code is administered by NTT West, the regional telecommunications carrier. Local numbers are typically five digits, making the total subscriber number length 10 digits when including the area code (e.g., 0974-4X-XXXX). The prefix is used for fixed-line services, including PSTN and fiber-optic (FTTH) connections.
Dialing Formats and Instructions
For callers within Japan, dialing a number in the 09744 area requires the full 10-digit number, including the leading '0'. For example, to call a local number, you would dial 0974-4X-XXXX. If you are calling from outside Japan, you must replace the leading '0' with Japan's country code +81, and drop the '0'. Thus, the international format becomes +81 974-4X-XXXX. For instance, a local number like 0974-45-1234 would be dialed as +81 974-45-1234 from abroad. It is important to note that there is no separate trunk prefix for international calls; the +81 replaces the 0.
Overlay and Numbering Considerations
Currently, there is no overlay plan for the 09744 area code, meaning that the code is unique to the Kokonoe region. However, as with all Japanese geographic codes, number portability allows users to retain their numbers when switching between fixed-line carriers, but the geographic significance remains. For businesses, having a 09744 number signals a local presence in this rural area, which can be beneficial for local customer trust. For travelers or those calling from mobile phones, the same dialing rules apply, but be aware that calls to geographic numbers from mobile phones may incur per-minute charges depending on your plan.