Area Code 988 – Naha, Okinawa
The phone area code for Naha, Okinawa is 988 (international format +81988). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Naha, Okinawa
Overview of Area Code 988 (Naha, Okinawa)
Area code 988 is a geographic National Destination Code (NDC) within the Japanese numbering plan, assigned to the city of Naha and its surrounding areas in Okinawa Prefecture. Naha serves as the capital and largest city of Okinawa, a major administrative, commercial, and cultural hub in the Ryukyu Islands. The code covers the central part of Okinawa Island, including the Naha metropolitan area and adjacent municipalities such as Urasoe and Ginowan.
Under the ITU-T E.164 standard, the international dialing format for numbers in Naha is +81 98 8XX XXXX (where the full national significant number is 10 digits, excluding the leading trunk prefix '0'). Domestically, callers within Japan dial 098-8XX-XXXX. The '0' is the trunk prefix used for national dialing, while the '98' is the area code (NDC) and the '8' is the first digit of the subscriber number, which together form the complete routing prefix '988'.
Geographically, area code 988 is part of the larger Okinawa numbering plan area, which also includes other codes such as 980 (for remote islands) and 990 (for mobile services). The 988 code is specifically designated for fixed-line services, including PSTN and fiber-optic (FTTH) connections. It is not used for mobile numbers, which in Japan are assigned non-geographic prefixes beginning with 070, 080, or 090.
For callers from outside Japan, the international access code of their country must be dialed first, followed by 81 (Japan's country calling code), then 98, and finally the 8-digit local subscriber number. For example, a call to a Naha business with the local number 8XX-XXXX would be dialed as +81 98 8XX XXXX from abroad. It is important to omit the leading '0' of the domestic area code when dialing internationally.
Within Japan, callers from other regions must dial 098-8XX-XXXX, while local calls within the Naha area may be made using the 8-digit subscriber number alone, depending on the carrier's dialing plan. However, with the proliferation of VoIP and mobile phones, it is common practice to always include the area code.
Overlay considerations: Currently, there is no overlay code for Naha; the 98 area code remains the sole geographic code for the region. However, number portability allows subscribers to retain their numbers when switching between fixed-line carriers, but not when moving outside the 98 area code boundary.
For businesses and residents in Naha, having a 988 number signifies a local presence, which can be important for customer trust and local marketing. When calling from overseas, always verify the correct international dialing sequence with your carrier, as some may require different access codes.