Area Code 162 – Wakkanai, Hokkaido

Overview of Area Code 162

Area code 162 is a geographic National Destination Code (NDC) assigned to the northernmost region of Japan's main island, Hokkaido. Specifically, it serves the city of Wakkanai and its surrounding municipalities, including the towns of Haboro, Horonobe, and Teshio, along the Sōya Subprefecture. This area is known for its proximity to Russia's Sakhalin Island and its harsh winter climate.

Dialing Formats

When calling a landline in Wakkanai from within Japan, subscribers dial the 0 trunk prefix followed by the area code and the subscriber number. The local number consists of seven digits in total, structured as 0-162-XX-XXXX. For example, a typical local number might be 0-162-34-5678.

From outside Japan, callers must use the international access code (e.g., 011 from the US, 00 from most countries), followed by Japan's country code +81, then the area code without the leading zero, and the subscriber number. Thus, the same number would be dialed as +81-162-34-5678.

Geographic Coverage and Administrative Jurisdiction

The 162 area code is allocated to the Sōya Subprefecture, with Wakkanai City as the principal city. Other communities within this code include the towns of Nakatonbetsu, Sarufutsu, and Esashi (in Hiyama Subprefecture? Actually, Esashi in Hiyama uses 0139, but Esashi in Sōya? There is an Esashi in Hiyama, but the 162 area covers the northern part of Hokkaido, including Wakkanai, and extends to the border with the 0163 area (Asahikawa) to the south. The exact boundaries are defined by the Ministry of Internal Affairs and Communications (MIC).

Caller Instructions

Local callers within the 162 area can dial the subscriber number directly without the area code if they are in the same charging group. However, for calls from other parts of Japan, the full national format 0-162-XX-XXXX is required. International callers must replace the leading zero with the country code, as shown above.

Overlay and Numbering Considerations

As of the latest data, there is no overlay code for 162, meaning the area code is unique to this region. However, number portability is available for fixed-line services, allowing subscribers to retain their numbers when switching carriers within the same geographic area.

For businesses or individuals planning to contact Wakkanai, it is essential to verify the correct area code, as misdialing may route calls to other Hokkaido regions. The 162 code is exclusively for landline services; mobile numbers in Japan use separate prefixes such as 070, 080, and 090.