Ever wondered how a massive retailer tracks thousands of inbound containers from dozens of different ocean carriers without complete chaos? Or how U.S. Customs instantly identifies which carrier is responsible for a specific shipment entering the country?
The secret is a simple, four-letter identifier: the Standard Carrier Alpha Code, or SCAC.
What is a SCAC Code? The 60-Second Explanation
The Standard Carrier Alpha Code (SCAC) is a unique two-to-four-letter code used to identify transportation companies.
- Who Issues It? The National Motor Freight Traffic Association (NMFTA)
- What's Its Purpose? To provide a standardized, computer-readable identifier for carriers.
How SCAC Codes Power Global Freight Operations
SCAC Code on a Bill of Lading
The Bill of Lading is the single most important document in shipping. The SCAC code is prominently displayed to identify the carrier.
The Role of SCAC in Freight Management Software
SCAC codes enable:
- Electronic Data Interchange (EDI) routing
- Standardized Tracking across carriers
- Automated Billing matching
Why SCAC is Critical for U.S. Customs Clearance
U.S. Customs and Border Protection (CBP) requires SCAC for the Automated Manifest System (AMS). Missing or incorrect SCAC codes cause holds, delays, and demurrage fees.
SCAC vs. DOT vs. MC Number
| Identifier | Purpose | Issued By | Primary Use Case |
|---|---|---|---|
| SCAC Code | Commerce & Operations | NMFTA | Carrier identification in billing, tracking, and EDI |
| DOT Number | Safety & Compliance | FMCSA | Tracking a company's safety record |
| MC Number | Legal Authority | FMCSA | License to transport regulated goods interstate |
How to Find, Look Up, and Get a SCAC Code
- Check the Bill of Lading
- Visit the Carrier's Website
- Use the Official NMFTA Lookup Tool
Common Steamship Line SCAC Codes
| Steamship Line | SCAC Code |
|---|---|
| A.P. Moller-Maersk | MAEU |
| Mediterranean Shipping Company | MSCU |
| CMA CGM | CMDU |
| COSCO Shipping Lines | COSU |
| Hapag-Lloyd | HLCU |
| Ocean Network Express (ONE) | ONEY |
| Evergreen Marine Corporation | EGLV |
| HMM Co. Ltd. | HDMU |
| Yang Ming Marine Transport | YMLU |
| Zim Integrated Shipping | ZIMU |
| Wan Hai Lines | WHLC |
| Matson | MATS |
FAQ
Who needs a SCAC code?
Any company that operates as a transportation carrier and needs to be identified in systems for customs, EDI, or major shipper requirements.
Does every carrier have one?
While not legally mandatory, it is a practical necessity for most operations.
What happens if a SCAC code is not renewed?
It becomes inactive and will be rejected by customs systems like AMS.
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