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1Z Tracking Number: What It Is, How It Works and More

Track your UPS package from start to finish! Learn about UPS tracking numbers, My Choice, SurePost, Access Points, and TForce Freight services.


If your package starts with "1Z," chances are it's from UPS.

They give each package a tracking number, and most of them start with "1Z" (although some might be a bit different). 

This tracking number is like a secret code you type in to see where your package is, either on the UPS website or with a free tracking app.

Want to know more about how UPS tracking numbers work and how to keep tabs on your deliveries? Keep reading!

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Understanding Tracking Numbers

A tracking number is a special code or barcode that consists of numbers or letters. Shipping companies like UPS assign it to each package or group of packages they handle. 

You usually find this number on the shipping label or in emails or receipts confirming your order. 

Tracking numbers are mainly used to follow where your packages are as they move through the shipping process.

Different delivery companies have their styles of tracking numbers. Couriers might use different formats to distinguish between the various services they offer.

When you look up a tracking number, you usually get different details like where the package is currently, where it has been, and when it's expected to be delivered.

Common Tracking Number Formats

Tracking numbers vary across the shipping industry.

Below are the basic formats for tracking numbers used by major delivery companies:

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Which Shipping Company Uses Tracking Numbers Beginning with 1Z?

UPS is the main shipping company using tracking numbers that start with 1Z.

If you see another number starting with 1Z, it's likely a scam.

No other big delivery companies use tracking numbers starting with 1Z.

Examples of UPS 1Z Tracking Numbers

UPS tracking numbers come in different formats, including the 1Z format. Here are a few real examples of old, inactive UPS tracking numbers that start with 1Z:

  • 1Z-3RA349-20-0158956-5
  • 1Z-X62777-03-1002089-6
  • 1Z-0X6W74-12-9801050-9

In each of these examples, there's a two-digit service code in the middle of the tracking number. For instance, in the first tracking number listed, the code "20" means "UPS Canada Standard (Ground)."

Most UPS ground packages have 18-digit 1Z tracking numbers.

These numbers start with 1Z, followed by a six-digit alphanumeric carrier code. Then a two-digit code showing the specific UPS service level for the package, followed by a seven-digit package identifier, and finally, a one-character checksum variable.

Tracking a UPS Package Online


The easiest way to track a UPS shipment is to visit the UPS online tracker. Simply enter your UPS tracking number.

If you don't have the tracking number, you can also input an order number, package ID number, reference number, or the UPS Delivery Notice Number found on any delivery notice left by a UPS driver.

You can locate UPS tracking numbers in several places, including your order confirmation email or text, your UPS My Choice account, on the package label itself, or a physical receipt from a UPS location.

Alternative Methods to Check the Tracking Status of a UPS Package

  • Access UPS My Choice. By registering for a free or premium account, you can monitor all your UPS deliveries online without needing tracking numbers or reference codes. You can sign in via the online portal or the UPS app.
  • Text UPS. Send "TRACK [Your Tracking Number]" to 69877, and UPS will respond with your tracking details.
  • Enroll in Quantum View or UPS Flex Global View. These enterprise shipping services cater to larger businesses, aiding in the tracking and management of numerous shipments.

Which UPS Services Offer Tracking?

UPS is known to offer its customers guaranteed day-definite and time-definite worldwide delivery services, based mainly on the shipment’s destination. Tracking is available for all services in most cases.

Here are some of the most commonly used services for eCommerce shipping:

  • UPS® Ground: Day-definite delivery in one to five days
  • UPS Worldwide Express Plus®: Time-definite delivery to 140 countries and territories with morning delivery
  • UPS Worldwide Express®: Time-definite service to 140 countries and territories
  • UPS Worldwide Saver®: Day-definite delivery by the end of the business day. Next business day delivery by the end of the day to Canada. Second business day delivery by the end of the day to Mexico and major metropolitan areas worldwide
  • UPS Worldwide Expedited®: Day-definite expedited delivery to over 220 countries and territories

Understanding UPS Online Tracking Statuses

When tracking a package with UPS, it's essential to be familiar with the different statuses you might encounter. Whether you employ the UPS Ground service or another shipping option, these statuses provide key insights into your shipment's progress.

Common UPS Tracking Statuses:

  • Returned to Shipper: The package has been sent back to the original sender.
  • Exception: An unexpected event has occurred. This might include issues like damage to the package, an incorrect address, or a missing signature, which can delay the estimated delivery time.
  • In Transit: Your package is currently moving within the UPS network and is expected to arrive on its initially scheduled date.
  • On Vehicle for Delivery: The package is out for delivery and should reach the recipient by the end of the day.
  • Updated Delivery Date: While your package is still on its way, circumstances have changed, causing the delivery date to be adjusted from the original estimate.

Understanding these statuses helps you stay informed about your package's journey and anticipate any potential delays.

How Long Does It Take for UPS to Update Tracking?

UPS generally updates tracking information each time your package reaches a new facility or checkpoint. As the package is scanned at these points, the tracking data is uploaded, usually in near real-time. This allows you to closely monitor your shipment’s progress.

However, there may be occasional delays in these updates. For example, if a driver doesn't scan the barcode immediately due to a busy schedule, the tracking information might not reflect the package’s current status right away. Additionally, technical issues or other unforeseen circumstances can also cause delays in updating the tracking information.

If you notice significant delays or have specific concerns about your shipment, contacting UPS customer service is the best course of action. They can provide the most accurate information and assist in resolving any issues.

Why Is My UPS Tracking Number Not Working or Updating?

If your UPS tracking number isn't working or updating, there are several possible reasons:

  1. Package Not Yet Picked Up: The tracking number may not be active because the courier hasn’t collected the package yet. Tracking numbers only become active after the package has been picked up and processed.

  2. Delayed Scanning: There might be a delay between when the package is handed over and when it is scanned into the system. This is more common during high-volume periods like holidays.

  3. Technical Issues: Temporary technical glitches in UPS’s system can sometimes prevent tracking information from updating as expected.

  4. Incorrect Tracking Number: Double-check the tracking number you've entered. A simple typo can cause issues with tracking.

  5. Service Delays: Occasionally, service interruptions or delays may impact the timely updating of tracking information. Be sure to check for any notifications or alerts from UPS.

What Should You Do?

  • Wait for 24 Hours: Allow up to 24 hours for the tracking number to be logged into the UPS system, especially if it was recently generated.

  • Check with the Sender: If the tracking hasn't updated after 24 hours, consider contacting the sender to confirm that there were no delays in dispatching your package.

  • Contact UPS Support: If the tracking information still hasn’t updated after 24 hours, reach out to UPS customer service with your tracking number and any other relevant details for further assistance.

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FAQs on UPS delivery services

We provide answers to some of the most frequently asked questions about UPS delivery services.

Understanding UPS InfoNotice

A UPS InfoNotice is the paper slip UPS drivers leave at your door if you miss a parcel delivery or pickup.

It informs you about the attempted delivery or pickup and provides instructions for the next steps. 

Each InfoNotice contains a unique UPS Delivery Notice Number, which you can use online to manage your package.

What Does "Out for Delivery Today" Mean in UPS Tracking?

When your UPS tracking status updates to &quot;out for delivery today,&quot; it indicates that your package has left the local distribution center and is currently on a delivery vehicle, en route to your specified address.

Understanding UPS My Choice

UPS My Choice provides access to UPS's online services, catering to both personal and business needs, each with tailored features.

  • For Personal Use: Your personal My Choice account allows you to oversee your home UPS deliveries via UPS.com or the UPS app. It offers two membership options: Basic (free) and Premium ($19.99 per year).
  • For Business: UPS My Choice for Business serves as the primary UPS solution for eCommerce enterprises seeking comprehensive shipping support. It offers an online dashboard to monitor delivery operations, along with user-friendly tools for managing deliveries, returns, and shipping claims.

Understanding UPS SurePost

UPS SurePost is an economical shipping choice that involves USPS mail carriers completing the final stages of delivery instead of UPS drivers.

The process begins with a UPS store managing and transporting your SurePost package until it reaches the designated USPS facility closest to the recipient's address. Subsequently, the recipient's regular USPS mail carrier takes charge of the last leg of the delivery journey.

Understanding the UPS Access Point

UPS Access Points are nearby businesses serving as pickup and dropoff locations for UPS customers. They also serve as alternative mailing addresses.

When traveling, you can send packages to a UPS Access Point for safekeeping until your return. Or, if you're a busy professional needing to collect a UPS delivery, you can schedule a pickup at a nearby Access Point, saving you a trip across town.

What Happened with UPS Freight?

UPS Freight is now known as TForce Freight.

UPS sold its less-than-truckload (LTL) division, UPS Freight, to TFI International Inc. for $800 million.

Following the acquisition, TFI rebranded the division as TForce Freight.

Despite the change in ownership and branding, UPS and TFI still collaborate. TForce provides limited LTL services to UPS, while UPS offers last-mile delivery services for TForce.

The UPS website provides a form for shippers to schedule freight pickups, which are then directed to TForce.

Additionally, TForce offers UPS Ground with Freight Pricing, a comprehensive solution merging their freight service with UPS's last-mile delivery service.

For tracking information on freight shipments sent through UPS/TFI, you can enter your tracking number into the TForce Tracking page or the free Circuit Package Tracker

How Much Does UPS Tracking Cost?

UPS tracking is included at no additional charge. When you purchase a shipping service from UPS, the tracking feature is bundled into the overall shipping cost.

Key Points:

  • Inclusive of Shipping Fees: There's no separate fee for tracking; it's part of the shipping expense.
  • Automatic Feature: Every eligible shipment automatically includes tracking.
  • All-Inclusive: Whether you're shipping domestically or internationally, the tracking cost is already covered.

By integrating tracking into the shipping price, UPS ensures a straightforward, hassle-free experience.

Stay Informed About Your UPS Package During Its Delivery Journey

Shipping companies strive to assist us in tracking our packages and staying updated on deliveries. Yet, package tracking can occasionally become intricate.

While package tracking might encounter complexities, using available resources and remaining patient can help ensure a smoother delivery experience.

For instance, the UPS tracking number contains 18 digits in total. It usually starts with "1Z" and ends with a check digit. This provides a reliable way to track your package from start to finish. Understanding this structure can help you decipher the tracking information more effectively and ensure your package is on the right path.

Ultimately, staying engaged with tracking updates and maintaining open communication with the shipping company can contribute to a more seamless package delivery experience.

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