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Japan ☎️ Landline / Geographic

Area Code 1543 – Kushiro, Hokkaido

The phone area code for Kushiro, Hokkaido is 1543 (international format +811543). Browse local exchange codes (NXX) and carrier assignments below.

Current Local Time
20:29:26
Asia/Tokyo • UTC +09:00
Full Dialing Format
+811543
Population 5,500,000
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Admin Region Hokkaido
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Elevation 1031m
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GPS Coordinates 43.4320, 142.9347
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📍 Geographic Location of Kushiro, Hokkaido

Geographic Overview

The +81 1543 area code serves the Kushiro region in Hokkaido, Japan's northernmost island. Specifically, it covers the eastern part of Kushiro Subprefecture, including the city of Kushiro and surrounding towns such as Shiranuka, Tsurui, and part of the Kushiro Wetland area. This region is known for its port, fishing industry, and proximity to natural landmarks like Lake Akan and the Kushiro Shitsugen National Park.

Dialing Formats

When calling a landline in this area from within Japan, you must dial the area code (including the leading 0) followed by the subscriber number. The full national number is 01543-X-XXXX, where X-XXXX is the local subscriber number (typically 5 to 7 digits). For example, a local number might be 01543-2-3456.

From outside Japan, callers must use the international prefix (e.g., 011 from the US, 00 from most countries), followed by Japan's country code +81, and then the area code without the leading zero. Thus, the international format becomes +81 1543-2-3456. Note that the trunk prefix 0 is dropped when dialing from abroad.

Local vs. International Calls

Local calls within the Kushiro area (i.e., between numbers sharing the same area code) do not require the area code; you can dial just the subscriber number. However, if you are calling from a mobile phone or from outside the area, you must include the area code. For international callers, it is essential to use the +81 country code and omit the initial 0 of the area code.

Overlay and Numbering

Currently, there is no overlay for area code 1543, meaning it is the sole area code for this geographic region. As of 2025, no changes have been announced. The numbering plan follows the Japanese Ministry of Internal Affairs and Communications (MIC) guidelines, and all numbers are allocated to fixed-line services.

Practical Tips

  • When saving a Japanese number in your phone, always store it in international format: +81 1543-XX-XXXX.
  • If you are in Japan and dialing from a mobile phone, you can use the national format 01543-XX-XXXX, but be aware that some mobile carriers may require the area code even for local calls.
  • For calls to toll-free or special services, always check the specific dialing instructions, as they may differ.

❓ Frequently Asked Questions

What area does the +81 1543 area code cover?
The +81 1543 area code covers the Kushiro region in Hokkaido, Japan, including the city of Kushiro and surrounding towns such as Shiranuka and Tsurui.
How do I dial a number in Kushiro from the United States?
From the US, dial 011 (international prefix), then 81 (Japan country code), then 1543 (area code without the leading 0), followed by the local subscriber number. For example, 011-81-1543-2-3456.
Do I need to dial the area code when calling within Kushiro?
No, if you are calling from a landline within the same area code, you can dial just the local subscriber number. However, if you are using a mobile phone or calling from outside the area, you must include the area code 01543.
Is 1543 a mobile or landline prefix?
1543 is a geographic area code assigned to fixed-line (landline) services in the Kushiro region. Mobile numbers in Japan start with 070, 080, or 090 and are not tied to geographic areas.
What is the correct international format for a Kushiro number?
The international format is +81 1543-XX-XXXX, where XX-XXXX is the local subscriber number. Remember to drop the leading 0 from the area code when dialing from abroad.