does UPS re-use tracking numbers?

nageov3t

Lifer
Feb 18, 2004
42,808
83
91
because apparantly the books I ordered from amazon.com yesterday to have shipped to my house in New Jersey were delivered to Texas 2 years ago :confused:
 

jamesbond007

Diamond Member
Dec 21, 2000
5,280
0
71
For your shipment's safety, I would recommend pulling your tracking number. :)

And yes, they do, along with FedEx, reuse tracking numbers. I've had this happen to me several times over the years.

~Travis
 

Foxery

Golden Member
Jan 24, 2008
1,709
0
0
Seems like they wouldn't have to for much longer than 2 years. With an 18-digit code, even if only half of those can be both letters and numbers, you have 101.6 trillion combinations. Omit the letters O and I for disambiguation with 0 and 1, and you still have 60.7 trillion.