Tracking numbers are used by UPS to identify and trace shipments as they move through the UPS system to their destination. UPS automatically assigns a tracking number to your shipment.
UPS tracking numbers appear in the following formats:
UPS will also track the following types of tracking numbers, which contain from seven to 20 characters:
- Delivery Order/Sub-PRO Number: Less-Than-Truckload (LTL)/and Truckload (TL) child shipment tracking numbers
- House Air Waybill: Used for air freight movement
- House Bill of Lading: Used for ocean freight movement
- PRO Number: Used for surface freight movement
- UPS InfoNotice: A bar-coded notice, which includes a 12-digit reference number, given on first delivery attempt in select countries
- UPS Service Notice: A notice given on first delivery attempt in select countries
UPS Mail Innovations Tracking Numbers
UPS Mail Innovations® uses tracking numbers to identify and track shipments as they move through the UPS Mail Innovations network and the United States Postal Service®, which makes the final delivery. With your tracking number, you can track your UPS Mail Innovations piece on both ups.com and upsmi.com. UPS Mail Innovations tracking numbers differ from a small package reference number in length and terminology.
UPS Mail Innovations tracking numbers appear in the following formats:
- United States Postal Service Delivery Confirmation Number: a 22-34 numerical identifier assigned by the U.S. Postal Service when Delivery Confirmation is requested
- Sequence Number (MMS/MMI Number): an 18-digit number assigned internally by UPS Mail Innovations or UPS Worldship
- Mail Innovations Compliant Package ID: a barcode-type identifier assigned by the shipper to each mail piece, using the structure below:
This indicator is made up of the following three components:
- MI - a UPS Mail Innovations indicator
- XXXXXX - a unique 6-digit customer number assigned by UPS Mail Innovations
- NNNNNNNNNNNNNNNNNNNNNN - a unique number, up to 22 characters, assigned by the shipper to identify a mail piece. Use alpha and/or numeric characters with no spaces or symbols. The same ID should not be reused for other mail pieces for at least six months.