Area Code 2243 – Shiroishi, Miyagi
The phone area code for Shiroishi, Miyagi is 2243 (international format +812243). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Shiroishi, Miyagi
Geographic Overview
The +81 2243 area code serves the Shiroishi region in Miyagi Prefecture, Japan. Shiroishi is a city located in the southern part of Miyagi Prefecture, known for its historic castle ruins and traditional crafts. The area code 2243 is part of the Japanese numbering plan, specifically assigned to the Shiroishi exchange area, which includes the city of Shiroishi and its surrounding towns and villages.
Dialing Format
When calling a landline in Shiroishi from within Japan, you must dial the area code (including the leading zero) followed by the subscriber number. The full national number is 02243-XXXXX, where 02243 is the area code (0 is the trunk prefix) and XXXXX is the 5-digit subscriber number. From outside Japan, you would dial +81 2243 XXXXX, omitting the leading zero. For example, a local number in Shiroishi might be 02243-12-3456. Internationally, it would be +81 2243 12 3456.
Coverage and Administration
The 2243 area code is administered by NTT East (Nippon Telegraph and Telephone East Corporation), which is the regional telecom operator for eastern Japan. The area covers Shiroishi City and parts of the surrounding districts, including the towns of Ogawara and Murata. This geographic area code is used exclusively for fixed-line services, including PSTN and ISDN lines, and is not assigned to mobile or VoIP services.
Calling Instructions
For local callers within the Shiroishi area, dialing the subscriber number alone may be possible if the call is within the same exchange, but for calls from other parts of Japan, you must dial 02243 followed by the subscriber number. For international callers, the country code +81 is used, followed by the area code without the leading zero (2243) and the subscriber number. It is important to note that when dialing from a mobile phone in Japan, the area code is still required, as mobile numbers have their own prefixes.
Overlay and Numbering Changes
Currently, there is no overlay plan for the 2243 area code, meaning that the area code is unique to the Shiroishi region. However, as with all Japanese area codes, the numbering plan is subject to change, and it is advisable to check with the Ministry of Internal Affairs and Communications (MIC) for any updates. The 2243 area code is part of the larger 022 area code group, which covers the Sendai metropolitan area, but 2243 is distinct and used only for the Shiroishi exchange.