Container Prefix Directory

CSLU Container Prefix Owner

CSLU is a container owner code associated with COSCO. Learn how BIC container prefixes identify equipment owners and operators.

Prefix: CSLU
Owner or operator: COSCO

The four-letter prefix CSLU appears at the start of ISO container identification numbers and is associated with COSCO.

A complete container number combines the owner prefix, six-digit serial number, and check digit. The prefix identifies registered equipment ownership and does not always identify the carrier currently transporting the container.

Use the CargoEnter container validator to check the number structure before starting shipment tracking.

CSLU container number format

A container number starting with CSLU has the four-letter prefix, a six-digit serial number, and one check digit, for example CSLU1234567.

Who uses CSLU containers

CSLU is registered to COSCO. Leased or exchanged equipment can move with a different shipping line, so the prefix alone does not identify the carrier of a shipment.

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CSLU Container Tracking – COSCO

Frequently asked questions

Who owns CSLU containers?

The CSLU prefix is associated with COSCO.

Does the CSLU prefix tell me the shipping line?

Not always. The prefix identifies the equipment owner. A leased or exchanged container can travel with a different carrier.