Area Code 9804 – Nago, Okinawa

Geographic Overview

The area code 9804 is a geographic National Destination Code (NDC) assigned to the city of Nago and its surrounding municipalities in the northern part of Okinawa Prefecture, Japan. Nago is the administrative and economic hub of the Yanbaru region, known for its subtropical forests, coastal resorts, and the Okinawa Churaumi Aquarium. The code covers the former Nago City area, which was expanded in 2006 through the merger of neighboring villages, but the dialing area remains consistent with the historical Nago exchange.

Dialing Formats

When calling a landline in Nago from within Japan, you must dial the trunk prefix 0, followed by the area code 9804 and the subscriber number. The complete national significant number (NSN) is 10 digits, excluding the initial 0. For example, a typical local number might be 0-9804-XX-XXXX (where X represents digits). From outside Japan, callers should use the international prefix (e.g., 011 from the US, 00 from most countries), followed by Japan's country code +81, then the area code without the leading 0: +81 9804 XX XXXX.

Calling Instructions

• Local callers within Nago: In most cases, you can dial the subscriber number directly without the area code, as Nago does not have an overlay plan. However, for clarity and to avoid misdials, it is recommended to dial the full national number.
• Callers from other parts of Japan: Dial 0-9804-XX-XXXX.
• International callers: Dial your country's exit code, then 81 9804 XX XXXX.

Regulatory and Technical Notes

Japan's numbering plan follows ITU-T E.164 recommendations. The area code 9804 is part of the Okinawa numbering area, which is subdivided into several NDCs. There are currently no overlay codes planned for Nago, meaning the 10-digit national number is unique within the region. Calls to 9804 numbers are routed over the PSTN and are also accessible via VoIP services that support geographic numbers. As with all Japanese geographic numbers, caller ID will display the number in the format 09804-XX-XXXX when displayed locally, omitting the country code.

For businesses and residents, it is important to note that Nago is a popular tourist destination, and many hotels and resorts have dedicated lines. When dialing from a mobile phone within Japan, you must still include the area code, as mobile numbers are non-geographic and cannot be reached by local dialing alone.