The validity period of AliExpress international logistics tracking numbers is usually 180 days, starting from the date the logistics company generates the tracking number. During the validity period, customers can use the tracking number to track the logistics and understand the transportation status and arrival time of the package. The tracking number that is not used after the validity period will become invalid, and you need to contact the logistics company again to generate a new tracking number. Therefore, please use and track the logistics tracking number in time to ensure smooth package delivery and timely receipt.