David Wang
-Updated on June 24, 2026
What does an Indonesia Post tracking number look like?
International items use the UPU S10 format: two letters, eight digits, a check digit, and the country code ID (13 characters), for example EE123456785ID. Domestic items such as Pos Kilat Khusus usually have an all-numeric resi number of about 11 to 16 digits.
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