As of 2014, Fed Ex Ground and Fed Ex Express tracking numbers are 12 alphanumeric symbols long divided into three sets of four. The Fed Ex label leaves room for expansion of tracking numbers to 14 digits.
Fed Ex labels have 34-digit bar codes with the tracking numbers embedded into them in the last 14 slots. The alphanumeric representation of the number is located on the left above the bar code. Recipient information, located above the tracking number, is also coded into the bar code. Government shipments use a different tracking code system utilizing identification numbers called Transportation Control Numbers (TCN).