Decoding Shipping Container Prefixes: A Completed GuideÂ
Container prefixes, the first three alphanumeric characters of the container number, are integral identifiers in the world of shipping. Assigned by the Bureau International des Containers (BIC), they provide insight into the container’s owner or operator.
This blog post will delve into the nuances of container prefixes, outlining those associated with key shipping lines and leasing companies.

Container Prefixes for Prominent Shipping Lines
Here are the container prefixes for some of the leading shipping lines:
- MSCU: Mediterranean Shipping Company
- MAEU: Maersk Line
- COSU: COSCO Shipping Lines
- ONEU: Ocean Network Express
- HLCU: Hapag-Lloyd
- APMU: APL (part of CMA CGM Group)
Key Container Leasing Company Prefixes
Container leasing companies also have unique prefixes. Here are some notable ones:
- TCLU: TAL International (now Triton International)
- GESU: SeaCube Container Leasing
- GLDU: Textainer
- CAIU: CAI International
- TTNU: Triton International
- TDLU: Transdistanceline
What is a container prefix?
A container prefix is the first three alphanumeric characters of a container number. Assigned by the Bureau International des Containers (BIC), they provide insight into the container’s owner or operator.
Why are container prefixes important?
Container prefixes are essential identifiers in the shipping industry. They allow for the identification of the owner or operator of a container, which is crucial information for logistics, tracking, and management.
When buying used shipping containers, how important is it to understand container prefixes?
Understanding container prefixes is essential when buying used shipping containers. It provides valuable information about the container’s original owner and usage, which can indicate its quality and condition. This knowledge allows buyers to make more informed decisions, helping them avoid poor quality containers and identify ones that offer better longevity.
How can understanding container prefixes help with one-way container leasing?
Decoding container prefixes is beneficial for one-way container leasing. It helps identify the container’s owner, clarifying accountability and aiding in tracking. It also provides insight into the container’s history and condition. Additionally, knowing the owner can ensure compliance with their specific transportation policies. This understanding can save lessees potential issues and costs, making the leasing process smoother and more efficient.
Can a container have more than one prefix?
No, each container has a unique prefix that identifies the container’s owner or operator.
How can I find out what a specific container prefix means?
The BIC maintains a registry of container prefixes. You can look up a specific prefix on their website to find out which owner or operator it corresponds to.
What do the letters U, J, and Z in the container prefix mean?
In a container prefix, the third and fourth characters, typically “U”, “J”, or “Z”, signify the type of container. “U” stands for multi-modal use, “J” is for detachable freight container-related equipment, and “Z” denotes trailers and chassis.
What happens if a container changes ownership?
If a container changes ownership, it may also change its prefix to reflect the new owner. The new prefix must be registered with the BIC.
How can I track a container using its prefix?
The prefix alone cannot track a container. However, combined with the container’s unique serial number and check digit, it can be used to trace the container’s journey through different tracking systems.