Using a tracking number is a common way to find a package in transit. The USPS automatically generates tracking numbers for most non-commercial domestic parcel services except First-Class Mail ...

I’ve only ever seen 420 for the three-digit code — 420 27344 9303 8680 9243 5665 7224 43. Most other ‘shipping partners’ use a regular USPS tracking number. Also, often, the grouping spaces are ...

A simple CLI package tracking tool with no Python dependencies required. IMPORTANT: This program requires an API key from the USPS Web Tools API Portal. Sign up at ...