David Wang
-Updated on June 25, 2026
What does a POST Luxembourg tracking number look like?
International POST Luxembourg numbers follow the UPU S10 format: two letters, nine digits, and the country code LU, for a total of 13 characters (for example EE123456789LU). Domestic Colis and PackUp items may instead use a longer all-numeric barcode that does not end in LU.
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