Container Prefix Directory

COSU Container Prefix Owner

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

Prefix: COSU
Owner or operator: COSCO

The four-letter prefix COSU 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.

COSU container number format

A container number starting with COSU has the four-letter prefix, a six-digit serial number, and one check digit, for example COSU1234567.

Who uses COSU containers

COSU 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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COSU Container Tracking – COSCO

Frequently asked questions

Who owns COSU containers?

The COSU prefix is associated with COSCO.

Does the COSU 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.