CargoFlowPlus
CAIU container prefix: CAI International
Container numbers starting with CAIU are registered to CAI International, a container leasing company. The box can be on hire to any shipping line, so track it with the carrier on your booking or bill of lading.
- Registered to CAI International (lessor)
- Check digit verified instantly
- Carrier comes from your documents
Related prefixes
Leased container: the operator can be any line
CAIU is registered to CAI INTERNATIONAL, INC.. CAI International is a container leasing business serving shipping lines. The prefix does not tell you who is carrying the box. Use the shipping line on your booking or bill of lading, and track by booking or B/L number if a container lookup returns nothing.
Check the number before you search
Every container number ends in a check digit calculated from the first ten characters (ISO 6346). If a CAIU number returns no result, run it through the checker on this page first: a mistyped letter or digit can cause a lookup to fail.
Free time follows the carrier, not the box owner
Demurrage and detention on a leased CAIU container are charged by the shipping line or terminal handling your shipment, under its own free time rules. The prefix alone does not determine them. Check the carrier's terms for the booking before planning collection or empty return.
How CargoFlowPlus handles it
- Check the number: Paste the container number to confirm the format and check digit before you search anywhere.
- Use the carrier on your documents: Track with the shipping line on your booking or bill of lading, not with the box owner alone.
- Watch free time, not only the ETA: In CargoFlowPlus, follow ETA changes, discharge and the days left before demurrage or detention.
Which shipping line uses CAIU containers?
No single line. CAIU is a CAI International leasing prefix, and leased boxes are used by many carriers. The shipping line on your booking or bill of lading is the one that reports the container's movements.
How do I track a CAIU container?
Confirm the number with the container number checker, then search it on the website of the carrier named on your documents. If that carrier does not find it, track the booking or bill of lading number instead.
Official sources
Sources checked . Carrier tools and access conditions may change.