There are three possible types of tracking IDs according to the shipping method you’ve chosen for your order.
Types of tracking IDs
Standard shipping: 13 characters (combination ID [letters and numbers] that starts with RR and ends with CZ)
DHL shipping: 1234567890 (ten digit ID)
UPS shipping: 18 characters (combination ID [letters and numbers] that always starts with 1Z)
Note: Orders sent via Standard shipping can also be traced on the website of the postal service in your country, if available.
For example, packages shipped to Russia can be traced with their local post tracker for more exact location.