Global Express Services tracking number - every time you start a shipping at Global Express , a tracking number is automatically assigned to your package. Tracking numbers are used by Global Express Services to identify and trace every package as it moves through the Global Express Services system to its destination. You can use the tracking number to locate and verify arrival of your package, as well as other details. The tracking number can also be given to other third parties as a proof that the package is being shipped (the Sender has released the package and Global Express Services is delivering it to the receiver, in other means).