Area Code 1545 – Kushiro, Hokkaido

Overview of Area Code 1545

Area code 1545 is a geographic National Destination Code (NDC) assigned to the Kushiro region in Hokkaido, Japan. It serves the city of Kushiro and its surrounding areas, including the towns of Shiranuka, Tsurui, and part of the Kushiro Subprefecture. This code is part of the Japanese numbering plan, which follows ITU-T E.164 standards. When dialing from abroad, the full international format is +81 1545 XXXXX, where the leading zero of the national prefix is omitted.

Local Dialing and Number Format

Within Japan, calls to Kushiro numbers are placed by dialing the area code (including the leading zero) followed by the subscriber number. The typical format is 01545 X-XXXX for landline numbers. The total length of a national geographic number in Japan is 10 digits, including the area code. For example, a local number might appear as 01545 2-3456. When calling from overseas, you would dial +81 1545 23456 (note the removal of the leading zero).

Geographic Coverage and Administrative Jurisdiction

The 1545 area code is administered under the jurisdiction of the Kushiro Subprefecture, which is part of the larger Hokkaido region. Kushiro is the largest city in the subprefecture and serves as a major port and commercial hub. The area is known for its natural beauty, including the Kushiro Wetlands, a designated Ramsar site. The code covers not only the urban center but also rural communities, ensuring that all landline subscribers within the designated service area are reachable via this NDC.

Caller Instructions

For local callers within Japan: Simply dial the area code and subscriber number as a single string, e.g., 01545 2-3456. There is no need to include the country code or the international access prefix.

For international callers: Dial your country's international access prefix (e.g., 011 from the US, 00 from most European countries), followed by Japan's country code 81, then the area code without the leading zero, and finally the subscriber number. For example, to call 01545 2-3456 from the US, you would dial 011 81 1545 23456.

Overlay and Numbering Considerations

As of the latest updates, there is no overlay code for the 1545 area. The region continues to use a single NDC, and number exhaustion has not been reported. However, like all Japanese geographic codes, number portability allows subscribers to retain their numbers when switching between fixed-line operators, but the geographic tie remains. This means that even if a subscriber moves to a different operator, the number still reflects the Kushiro geographic area.

For businesses and residents, understanding the correct dialing format is essential to avoid call failures. Always verify the subscriber number length, which typically ranges from 4 to 6 digits after the area code, depending on the specific exchange.