Tracking Number Formats
The most common tracking number format is 20 digits (e.g. 9999 9999 9999 9999 9999), or a combination of 13 alphabetic and numeric characters, usually starting with 2 alphabets, following by 9 digits, and ending by “US” (e.g. EA 999 999 999 US). Some other less common formats may also exist, such as 10 digits. UPS
Customer Service
If you have any question regarding the delivery process of a package, call [+1] 800-275-8777.
Link download Usps Tracking: http://uspstrackingus.com/
See more:
Usps Tracking 