Area Code 1634 – Hamatonbetsu, Hokkaido
The phone area code for Hamatonbetsu, Hokkaido is 1634 (international format +811634). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Hamatonbetsu, Hokkaido
Overview of Area Code 1634
Area code 1634 is a geographic National Destination Code (NDC) assigned to the town of Hamatonbetsu, located in the northern part of Hokkaido, Japan. This code is part of the Japanese numbering plan, which follows ITU-T E.164 recommendations. The full international dialing format for numbers in this region is +81 1634 XXXX, where XXXX is the local subscriber number. Within Japan, callers dial 01634-XXXX from landlines or mobile phones.
Geographic Coverage and Administration
Hamatonbetsu is a town situated in the Soya Subprefecture of Hokkaido, facing the Sea of Okhotsk. The area code 1634 covers Hamatonbetsu and its immediate surroundings, including the coastal areas and inland districts. The town is known for its fishing industry and natural landscapes, such as Lake Kutcharo. The administrative jurisdiction for this numbering area falls under the Ministry of Internal Affairs and Communications (MIC) of Japan, which oversees the allocation of NDCs to regional telecommunications carriers.
Dialing Formats and Instructions
For local callers within Hamatonbetsu, the area code is often omitted when dialing numbers within the same exchange area; however, for clarity and to avoid misdialing, it is recommended to include the full number. The standard domestic format is 01634-XXXXX, where XXXXX is the subscriber number (usually 5 digits). For international callers, the format is +81 1634 XXXXX, with the leading zero of the area code dropped. For example, a local number might be 01634-12345; internationally, it would be dialed as +81 1634 12345.
Overlay and Numbering Considerations
As of the latest updates, there is no overlay code for the 1634 area. The area code is unique to Hamatonbetsu and does not share numbering resources with adjacent regions. However, with the gradual transition to IP-based telephony, some numbers in this area may be assigned to VoIP providers, but the geographic significance remains for routing purposes. Callers should be aware that when dialing from overseas, the international access code (e.g., 011 from the US) must be used before the country code 81.
Practical Examples
To illustrate, if a business in Hamatonbetsu has the local number 01634-56789, a caller from Tokyo would dial 01634-56789, while a caller from the United States would dial 011-81-1634-56789. It is essential to verify the number of digits in the subscriber number, as some older numbers may have fewer digits. Always confirm with the recipient or local directory for accurate dialing.