See a tracking number starting with 'TBA'? That means Amazon Logistics (AMZL) is handling the delivery, not a third-party carrier. Amazon now handles roughly 75% of its own packages this way, and their delivery network has become fast and reliable.
You can track a TBA package on ParcelsZen. Paste the full 15-character number, including the TBA prefix.
What Is Amazon Logistics?
Amazon Logistics (AMZL) is Amazon's own delivery service, built since 2014. Today it handles roughly 75% of Amazon Prime deliveries in the US. Amazon does this using a combination of their own delivery vans (the blue Amazon-branded vehicles), Amazon Flex drivers (independent contractors who deliver using their personal vehicles and the Amazon Flex app), and in some markets, Amazon's own aircraft. Amazon's Delivery Service Partners (DSPs) are small businesses contracted to manage fleets of Amazon vans.
Amazon Logistics is now the largest parcel carrier in the United States by volume.
Amazon Logistics is now the largest parcel carrier in the United States by volume, having overtaken UPS and FedEx. That position was built in roughly a decade from a standing start in 2014, and it is why a tracking number you do not recognise is now more likely to be Amazon's than anyone else's.
The network runs on three layers. Fulfilment centres store and pick the inventory. Sortation centres group parcels by region. Delivery stations handle the final leg, and it is here that parcels are loaded into the vans and private cars that bring them to your door.
The practical consequence for you is speed at the cost of visibility. Because Amazon controls the whole chain, it can promise same-day and next-day delivery on a scale the traditional carriers cannot match on standard services. Because that chain is closed, the tracking detail you get is thinner than a UPS or FedEx shipment would give you, and it is only visible in one place.
What Does TBA Mean in a Tracking Number?
TBA is not an official acronym. Example: TBA123456789000
TBA confirms Amazon Logistics is delivering, not UPS, FedEx or USPS. TBA numbers cannot be tracked on UPS.com or FedEx.com. Use Amazon's website, the Amazon app, or ParcelsZen.
The honest answer is that TBA does not officially stand for anything. Amazon has never published an expansion of the letters. You will see "Tracked By Amazon", "Tracking By Amazon" and "To Be Assigned" repeated confidently across the web, and none of them comes from Amazon. Inside Amazon's systems the prefix is a routing flag meaning this shipment stays inside the Amazon network rather than being handed to a public carrier.
The format is fixed: the letters TBA followed by 12 digits, giving 15 characters in total. TBA305477112000 and TBA844737829101 are both valid examples. The digits are not a postal barcode and carry no routing information you can decode. They are simply Amazon's internal reference for that shipment.
Why so many numbers start with TBA3
If you have searched for "TBA3 tracking" you are not looking at a different format. The 3 is just the first digit of the number. Amazon has issued so many Logistics tracking IDs over the years that the counter now sits in the 3-range, so almost every number generated today reads TBA3 at the start. There is no TBA3 service, no TBA3 carrier and nothing separate to look up. It is one prefix, one carrier, and a counter that happens to have reached 3.
TBC, TBM and the international variants
Amazon uses a small family of prefixes. TBC and TBM appear on some orders alongside TBA, and outside the United States the pattern changes again: UK orders commonly start with GBA, and French orders often begin with CC.
You will find guides claiming each prefix maps to a specific country, TBC to Canada and TBM to Mexico being the usual pair. Amazon publishes no such mapping and the guides circulating online disagree with each other. Treat any prefix-to-country claim as indicative rather than reliable. The prefix tells you the parcel is inside Amazon's network. It does not tell you where the parcel is.
Who Actually Delivers a TBA Package?
This is the question behind most TBA searches, and the short answer is Amazon delivers it, but rarely with an Amazon employee. Three different groups drive those vans.
| Who | What they are | What you see at the door |
|---|---|---|
| Delivery Service Partners | Independent companies contracted to Amazon, running branded vans | A blue Amazon-branded van, uniformed driver |
| Amazon Flex drivers | Independent contractors using their own cars | An unmarked private car, driver with an Amazon app |
| Amazon employees | Direct staff at some delivery stations | Amazon-branded van |
🚐 Delivery Service Partners
🚗 Amazon Flex
👤 Amazon employees
The Flex explanation matters, because an unmarked car pulling up is the thing that makes people check their tracking twice. A private vehicle delivering an Amazon parcel is normal, not a sign that something has gone wrong.
What a TBA number rules out is just as useful. If your number starts with TBA, then UPS, FedEx and USPS are not involved at any point. Those companies have never seen the parcel and never will. That is why their websites return nothing, and it is the single most common source of confusion around these numbers.
How to Track a TBA Package
- Amazon account: Orders → Track Package
- ParcelsZen: paste the full TBA number
- Amazon app: real-time map tracking when the driver is nearby
The number only works inside Amazon's own systems. Amazon Logistics does not publish its scan data to public carrier networks, so a TBA number cannot be looked up on USPS.com, UPS.com, FedEx.com or on general tracking aggregators. A blank result on those sites does not mean the number is fake or the parcel is lost. It means you are asking a network that has never handled it.
Three places that do work:
- Your Amazon order page is the authoritative source. Your Orders, then Track Package. It shows every scan Amazon has recorded, plus the delivery photo once the parcel arrives.
- The Amazon app adds live map tracking in the final stage, showing how many stops away the driver is.
- track.amazon.com accepts a TBA number directly without going through the order page, which is useful when the shipping email is all you have.
TBA tracking is tied to the Amazon account that placed the order. If someone forwarded you a TBA number for a gift, a marketplace order or a drop-shipped item, no site will show it to you, including Amazon's own. Only the purchasing account can see the shipment. Ask the sender for a screenshot of their order page.
Expect sparse scanning, especially early on. Amazon frequently shows very little movement until the parcel reaches the local delivery station, then jumps straight to out for delivery. Several quiet days followed by a sudden burst of activity is the normal pattern on this network rather than a warning sign.
Amazon Logistics Delivery Windows
Amazon Logistics delivers 7 days a week including Sundays and most holidays, 8 AM to 10 PM local time. A key advantage over UPS and FedEx, which typically don't deliver to residential addresses on Sundays.
Track Your Amazon TBA Package
Enter your TBA tracking number for instant Amazon Logistics updates.
Track Amazon PackageWeekend and evening delivery is the practical difference. UPS and FedEx do not generally deliver residential parcels on Sundays, and their standard services finish far earlier in the day. An Amazon parcel arriving at 8pm on a Sunday is routine.
What "Arriving today by 10 PM" actually means. That window is an algorithmic estimate recalculated as the route progresses, not a commitment. It is generally accurate, but it tightens or slips during the day as the driver works through their stops. If the window passes without a delivery, the parcel has almost always simply rolled to the next day rather than gone missing.
Peak season stretches the estimates. Between late November and the end of December the network runs at capacity, and the same order that would arrive next day in March can take three or four days. Amazon usually reflects this in the promised date at checkout, so the date you were given is a better guide than your experience of the service in a quiet month.
TBA Tracking Status Meanings
'Package received by carrier'
Amazon has the package and it's sorted for your delivery route.
'Out for delivery'
An Amazon driver or Flex contractor has the package on their route today.
'Arriving today by [time]'
Amazon's algorithm estimates delivery before a specific time. Generally reliable but an estimate, not a guarantee.
'Delivered – Left at front door'
Package left at your door. Amazon usually takes a delivery photo, so check your order page.
'Delivered – Handed to resident'
A person at your address received the package from the driver.
'Attempted delivery – No secure location available'
Driver couldn't find a safe spot to leave the package. Reattempt expected next day.
| Status | What it means | What to do |
|---|---|---|
| Ordered / Shipping soon | Label created, parcel not yet picked | Nothing |
| Package received by carrier | Inside the Amazon network, sorted for your route | Nothing |
| Out for delivery | On a driver's route today | Track live in the app |
| Arriving today by [time] | Algorithmic estimate, recalculated during the route | Nothing, it can slip |
| Delivered, left at front door | Dropped at the address | Check the delivery photo |
| Delivered, handed to resident | Given to a person | Ask household members |
| Attempted delivery | No safe drop location found | Reattempt next day |
✅ Normal, no action
📍 Today
⚠️ Worth checking
The delivery photo is the detail worth knowing about. Amazon drivers photograph the drop location on almost every unattended delivery, and the image appears on your order page. It frequently resolves a "delivered but missing" case in seconds, because the photo shows a side door, a porch box or a neighbouring property you had not checked.
What to Do When an Amazon TBA Delivery Is Missing
- Check all spots: front door, back door, mailroom, package locker, with a neighbour. Look for a delivery photo in your Amazon order.
- Wait 24 hours: Amazon sometimes marks packages delivered slightly before arrival. Usually self-corrects.
- Contact Amazon: through your order page. Amazon typically reships or refunds for missing packages promptly.
- Check Nextdoor or Ring: to see if a neighbour accidentally received your package.
For Prime orders, Amazon will typically offer an immediate reship or full refund for packages reported missing through your order page. If the order came from a third-party seller and the conversation stalls, the A-to-z Guarantee is the formal escalation route and it covers items that never arrived.
Frequently Asked Questions
Track on ParcelsZen
Enter your TBA tracking number into ParcelsZen for real-time Amazon Logistics updates. If your package shows 'Delivered' but isn't there, check the delivery photo in your Amazon order page first, because drivers photograph the drop location on almost every unattended delivery.
- Package received by carrier: Sorted for your route
- Out for delivery: Driver has your package today
- Arriving today by [time]: Estimated window
- Delivered – Left at front door: Check delivery photo in your order
- Attempted delivery: No safe spot found, reattempt tomorrow
Two things explain almost every TBA question. The first is that the number lives only inside Amazon, so any other site returning nothing is expected behaviour rather than a problem. The second is that scanning is sparse by design, so silence in the middle of the journey is not evidence of a loss.
The situations that genuinely need action are narrow: a parcel marked delivered that is not there, and a parcel showing no movement at all for several days past its promised date. Both are handled the same way, through your Amazon order page, and both are resolved unusually quickly because Amazon owns the carrier and does not need to investigate a third party before refunding you.