1. Open the search engine and enter keywords such as "Japanese telephone area code" or "Japanese telephone number format".
2. Find reliable websites or resources in search results, such as official websites, telephone number databases or online yellow pages.
3. In the relevant websites, enter the specific phone number to be queried, and you can get the information of the region and operator.
In addition, you can also obtain Japanese telephone area code information in the following ways:
1. Contact the local Japanese embassy or consulate for help.
2. Seek help from local Japanese societies, overseas students or tourist consultation centers.
3. Search the Japanese phone book or online yellow pages online to find the area code information of a specific phone number.
Please note that the telephone number and area code may change at any time, and it is recommended to use the latest and reliable resources to inquire about relevant information.