Container Prefix Directory

CAAU Container Prefix Owner

CAAU is a container owner code associated with CAI International. Learn how BIC container prefixes identify equipment owners and operators.

Prefix: CAAU
Owner or operator: CAI International

The four-letter prefix CAAU appears at the start of ISO container identification numbers and is associated with CAI International.

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.

CAAU container number format

A container number starting with CAAU has the four-letter prefix, a six-digit serial number, and one check digit, for example CAAU1234567.

Who uses CAAU containers

CAAU is registered to CAI International. 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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CAAU Container Tracking – CAI International

Frequently asked questions

Who owns CAAU containers?

The CAAU prefix is associated with CAI International.

Does the CAAU 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.