Phone area code
Each country area has its own local phone prefix. This phone prefix is added after IDD and international phone number. In case of local call (call just between areas not countries) you don't need to add IDD and international phone number.
If you are calling from other country than
Japan to the
Asahikawa area, dial IDD of your country, then international phone number (country code)
+81, after that phone area code of Asahikawa
166 and call number.
Example: International call +81 - 166 (Telephone number)If you are calling inside country
Japan , you don't need to dial IDD and international phone number (country code) of
Asahikawa +81. Just dial phone area code of
166 and call number.
Example: Local call 0 166 (Telephone number)