Japan Post Package Tracking
The most common tracking number format is a combination of 13 alphabetic and numeric characters, usually starting with 2 alphabets, following by 9 digits, and ending by "JP" (e.g. EA 999 999 999 JP). Some other less common formats may also exist.
If you have any question regarding the delivery process of a package, call [+81] 0570-046-111.
The most common cause of no tracking records is incorrectly typed tracking number. It is advised to check with the sender if you are not sure what the number is. Besides, it takes some time for a new package to show up in the system.
It is advised to check with local office for accurate results, because the hours of delivery vary by product and location.