Container Prefix Directory

CSNU Container Prefix Owner

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

Prefix: CSNU
Owner or operator: COSCO

The four-letter prefix CSNU 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.

CSNU container number format

A container number starting with CSNU has the four-letter prefix, a six-digit serial number, and one check digit, for example CSNU1234567.

Who uses CSNU containers

CSNU 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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CSNU Container Tracking – COSCO

Frequently asked questions

Who owns CSNU containers?

The CSNU prefix is associated with COSCO.

Does the CSNU 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.