ShipSmart — Free Shipping Tools — View All →

Tracking Number Format Checker

Paste any tracking number to instantly identify the carrier and format.

Tracking Number Format Reference

CarrierFormat / PatternLength
USPS Priority/First ClassStarts with 94, 93, 92, 91, 70, 71, 73, 7720-22 digits
USPS International2 letters + 9 digits + 2 letters (e.g. EE000000000US)13 chars
UPSStarts with 1Z + letters/numbers18 chars
FedEx Express12 digits (e.g. 7946 4482 3741)12 digits
FedEx Ground15 digits or 20 digits15-20 digits
DHL Express10 digits10 digits
DHL eCommerceJD + 18 digits20 chars
Amazon AMZLTBA + 12 digits15 chars
OnTracC followed by digits8-14 chars