United Postal Service Tracking Number. Tracking number is consists of letters and numbers between 15 and 40 digit long shown on your USPS receipt tracking number is ussualy close to the barcode. The IM barcode is intended to provide greater information and functionality than its predecessors.
IMB tracking numbers starting with 0031. 9400 1000 0000 0000 0000 00. The number will reply you with the latest update or status of your shipment.
0300 0000 0000 0000 0000.
However the number of the digits may change depending on the kind of USPS service. Send a text with your tracking number and the keyword to the number 28777 2USPS. 12102017 Send a text with your tracking number to the number 28777 2USPS. Service Sample Number.
