ACI Express Tracking: Status Glossary, Last-Mile Handoff, and Fixes

Your ACI Express tracking has not moved in days, and you are not sure the parcel is even coming. You bought from a Korean seller, saw a courier you have never heard of, and now the scans have stopped.

That silence is normal for this route, not a sign your package is lost. Here is exactly what ACI Express is, who finishes delivery, and what each status means.

What is ACI Express and how do you track it?

ACI Express is the trading name of ACI Worldwide Express Corporation, a courier and logistics company based in Seoul, South Korea. It has operated since 1980 and handles international express, freight forwarding, and cross-border e-commerce. If you bought from a Korean seller, this is the company carrying the first leg of your order.

To track it, use the number from your order confirmation on the carrier’s own site at aciexpress.net, the retailer’s order page, or the email and SMS alerts the seller sends. Each shows the same parcel from a different angle. The fastest option is usually whichever source gave you the number.

One honest warning up front: ACI usually only scans the Korea side of the trip. Once your parcel reaches your country, a local carrier takes over and your ACI number often stops updating. That handoff, not a lost parcel, is the reason most people land on this page.

The three “ACI” companies (don’t confuse them)

Search “ACI” and you hit three unrelated firms with almost the same name. Mixing them up is the single biggest source of panic, because one of them has a bad complaint record that has nothing to do with your Korean parcel. Here is the clean split.

Name	What it is	Site / ticker	Your parcel?
ACI Worldwide Express Corporation	Korean courier (this article)	aciexpress.net	Yes
ACI Worldwide, Inc.	US payments-software company	NASDAQ: ACIW	No, not parcels
ACI Logistix	Separate UK/US last-mile and freight firm	acilogistix.com	No, different company

Your parcel is with the first one, the Korean courier at aciexpress.net. The payments company ACI Worldwide, Inc. (NASDAQ: ACIW) never touches parcels. ACI Logistix is a separate last-mile and freight firm, and the scam complaints you may have read belong to it, not to the Korean courier.

Before you worry, read the exact carrier name printed on your label or order page. If it says ACI Worldwide Express or links to aciexpress.net, you are dealing with the legitimate Korean courier covered here.

Your ACI Express tracking number: what to expect

ACI does not publish an official tracking-number format, length, or example anywhere. Neither the carrier’s own site nor the major aggregators give a sample, so be wary of any page that claims a fixed digit count. The number is simply the one your Korean seller or marketplace assigned at checkout.

The carrier’s site says it accepts a tracking number, Shipment ID, PRO number, or Order ID, so any of those from your order can work. If one does not, try another identifier from the same confirmation.

Where to look	What you will find
Order confirmation email	The tracking number the seller assigned at purchase
Retailer or marketplace account	The order page with the number and carrier name
Official site aciexpress.net	A field that accepts a tracking number, Shipment ID, PRO number, or Order ID

If you cannot find any number at all, you can still track a package without a tracking number through the retailer’s order status and your account history. A missing number is common when a seller ships before the label fully registers. Give it a day, then check the order page again.

When a number simply refuses to load, our guide on a tracking number not working walks through the usual causes. Most are timing, a typo, or the parcel sitting with a carrier that has not scanned it yet.

Who delivers the last mile (and why tracking goes quiet)

ACI is an origin-side international courier, not a domestic delivery network in your country. It carries your parcel out of Korea, flies it to your region, then hands it to the local post or courier for the final leg. In the US that is usually USPS; in the UK it is often Royal Mail tracking that takes over.

This is why your ACI scans freeze. The last ACI update is frequently an export scan or a destination-arrival scan, and it can sit there for days while the parcel moves quietly through import customs clearance and into the local network.

A frozen export or arrival scan has been a normal pattern for Korean “ACI” parcels for years. It rarely means the parcel is lost. Once the local carrier picks it up, you track the rest on that carrier’s number, not ACI’s.

If your parcel sits longer than expected, read what in transit means for a package and when a package stuck in transit is a real problem versus a slow but moving shipment.

ACI Express status glossary (what each scan means)

ACI does not publish a plain-English guide to its scan wordings, so here is one built from how cross-border parcels actually move. Your exact wording may differ slightly by seller and language. Match the closest row to see what it means for you.

Status wording	What it means for you
Shipment information received	The seller created a label. ACI has the order details but not the parcel yet.
Picked up / Collected	ACI now physically holds your parcel at origin in Korea.
Departed origin / Departed facility	Your parcel left the first Korean sorting hub and is heading toward export.
Export cleared	Korean export customs released the parcel to leave the country.
In transit to destination country	The parcel is on an international leg, usually by air, bound for your country.
Arrived at destination / Arrived in [country]	It landed in your country and is waiting on import customs.
Import customs clearance	Your country’s customs is checking the parcel before release.
Handed to local carrier / Transferred	ACI passed the parcel to your local post or courier for final delivery.
Out for delivery	A local driver has your parcel on the van today.
Delivered	The local carrier marked it delivered. If you do not have it, contact that carrier.

Two rows cause the most confusion. “Handed to local carrier” means ACI’s job is essentially done and you should switch to the local carrier’s tracking. “Arrived at facility” simply means your parcel reached a sorting hub, not that it is out for delivery yet.

How long does ACI Express delivery take?

ACI does not publish a standard transit time, so treat any number as an estimate, not a promise. As a general expectation for economy cross-border e-commerce from Korea, plan on roughly one to three weeks, and longer if customs holds the parcel. These are typical market ranges, not figures ACI guarantees.

Leg of the trip	Rough expectation (not an ACI figure)
Korea pickup to export	A few days
International air transit	Several days to a week or more
Import customs	One to seven-plus days, varies widely
Local last-mile delivery	One to five days
Typical total (economy)	Roughly one to three weeks, longer with customs

Customs is the biggest variable in ACI Express delivery. A parcel can clear in a day or sit for over a week, especially around holidays or if paperwork is missing. If it is stuck at the border, our guide on a package stuck in customs explains what you can and cannot do.

ACI Express tracking not updating or number not found

First, decide whether you are looking at normal cross-border silence or a real problem. A gap of three to seven days on one scan is routine for this route. Beyond that, it is worth acting.

Symptom	What to do
Stuck on one scan for 3 to 7 days	Normal for cross-border shipping. Wait before worrying.
Stuck 10+ days at an export or arrival scan	Check the destination carrier and ask the seller for the local number.
Number not found	Confirm the exact carrier name and spelling; the number may not be active yet.
Marked delivered but not received	Contact the local carrier that delivered first, then open a case with the seller.

If the number is not found at all, confirm you copied it correctly and that you are using the right carrier name. Newly shipped parcels often are not active for a day or two. A parcel marked delivered that never arrived is a last-carrier issue, so contact USPS, Royal Mail, or your local post first, then open a case with the seller.

Throughout, ask the seller or marketplace for the destination-carrier number once the parcel reaches your country. That local number, not the ACI one, is where fresh scans appear.

Is ACI Express legit, or a scam?

The Korean ACI Worldwide Express is a real company, founded in 1980, and since December 2024 a fulfilment partner for Coupang, Korea’s largest marketplace. That Coupang service actually runs inbound to Korea, letting overseas sellers warehouse stock with ACI for delivery to Korean shoppers, but it shows the courier is a large, legitimate operator. It is not a scam. The reason ACI shows up on your overseas order is simpler: it runs an outbound international-express business, and Korean sellers, marketplaces, and eBay listings that ship from Korea hand their parcels to it.

The scam stories you may have found describe falsified delivery photos, parcels marked delivered that never arrived, and bot-only support. Public complaints on Trustpilot and the Better Business Bureau attach those to ACI Logistix, the separate firm, not to the Korean courier.

So the honest answer: ACI Express itself is legitimate. Your job is to confirm the exact name on your label and not confuse it with ACI Logistix or the ACI Worldwide payments company. If the name and the aciexpress.net link match, you are fine.