Container Prefix Tracking
CAIU Container Tracking – CAI International
Track CAIU containers associated with CAI International. Check the ISO number format, owner identity, carrier milestones, and missing-update guidance.
- Prefix
- CAIU
- Owner or operator
- CAI International
The four-letter prefix CAIU 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 complete number to request available tracking events. If no events appear, confirm the operating carrier because leased or exchanged equipment can move under another shipping line.
CAIU container number format
A container number starting with CAIU has the four-letter prefix, a six-digit serial number, and one check digit, for example CAIU1234567.
Tracking a CAIU container
Enter the full CAIU number to request events. CAIU is a known prefix for CAI International, but leased or exchanged equipment can travel with another shipping line, so check the operating carrier if nothing appears.
Frequently asked questions
Who owns CAIU containers?
The CAIU prefix is associated with CAI International.
Does the CAIU 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.