What Is a Tracking Number?

A tracking number is a unique alphanumeric code assigned to a package or shipment that allows senders and recipients to monitor its delivery status in real time. Tracking numbers are used by postal services and courier companies like USPS, FedEx, UPS, and DHL to provide visibility into a parcel’s journey from origin to destination.

The format of a tracking number varies by carrier:

• USPS Priority Mail: Usually a 20-digit number
• USPS Express Mail: May use a 22-digit format
• UPS: Typically starts with "1Z"
• FedEx: Often starts with "9"
• DHL: May start with "JD" or "GM", depending on the service type

Customers can enter these codes into the carrier’s website or app to receive updates on location, estimated delivery date, and delivery confirmation.

How to Know If Your Package Has a Tracking Number

Tracking numbers are generally provided:

• In your order confirmation email
• On the shipping label
• Through your seller’s dashboard if using eCommerce platforms like Etsy, Shopify, or POD services

Once you have the code:

1. Go to the courier’s official website.
2. Enter the tracking number into their tracking tool.
3. View real-time updates including departure scans, transit locations, and final delivery.

Alternatively, if you’re unable to access the internet, most carriers offer tracking updates via SMS, email notifications, or customer service hotlines.

Some packages may also require signature confirmation, which will appear in the tracking data once the parcel is delivered and signed for.

How to Identify the Carrier by Tracking Number

You can often tell which shipping company is handling your package by the prefix or structure of the tracking number:

• UPS: Starts with 1Z
• FedEx: Typically starts with 9
• DHL: Often starts with JD (international) or GM (domestic)

If you’re unsure, use a tracking number identifier tool or search the prefix online to match it with the carrier. This step is especially useful when dealing with international shipments or third-party logistics providers.

Tracking numbers are essential for any print-on-demand business that relies on timely and trackable delivery to customers. If you're running a POD store, learn how to manage logistics efficiently in our Complete Beginner’s Guide to Print on Demand or explore Print on Demand vs Dropshipping to see how shipping strategies compare.