There are several styles of UPS tracking numbers. The most common of which are “1Z” tracking numbers. These are of the form 1Z xxx xxx yy zzzz zzz c, where xxx xxx is the alphanumeric account number of the shipper, yy is the service code, zzzz zzz is the package identifier, and c is a checksum of some sort.
Herin is a non-exhaustive list of service codes:
| 01 | UPS United States Next Day Air (“Red”) |
| 02 | UPS United States Second Day Air (“Blue”) |
| 03 | UPS United States Ground |
| 12 | UPS United States Third Day Select |
| 13 | UPS United States Next Day Air Saver (“Red Saver”) |
| 15 | UPS United States Next Day Air Early A.M. |
| 22 | UPS United States Ground – Returns Plus – Three Pickup Attempts |
| 32 | UPS United States Next Day Air Early A.M. – COD |
| 33 | UPS United States Next Day Air Early A.M. – Saturday Delivery, COD |
| 41 | UPS United States Next Day Air Early A.M. – Saturday Delivery |
| 42 | UPS United States Ground – Signature Required |
| 44 | UPS United States Next Day Air – Saturday Delivery |
| 66 | UPS United States Worldwide Express |
| 72 | UPS United States Ground – Collect on Delivery |
| 78 | UPS United States Ground – Returns Plus – One Pickup Attempt |
| 90 | UPS United States Ground – Returns – UPS Prints and Mails Label |
| A0 | UPS United States Next Day Air Early A.M. – Adult Signature Required |
| A1 | UPS United States Next Day Air Early A.M. – Saturday Delivery, Adult Signature Required |
| A2 | UPS United States Next Day Air – Adult Signature Required |
| A8 | UPS United States Ground – Adult Signature Required |
| A9 | UPS United States Next Day Air Early A.M. – Adult Signature Required, COD |
| AA | UPS United States Next Day Air Early A.M. – Saturday Delivery, Adult Signature Required, COD |
