Definition
The owner prefix is the first three letters in the ISO 6346 number.
That code identifies the registered owner or operator of the container and is one of the first things a terminal or depot team should confirm when a number looks wrong.
Where it helps
Owner prefix checking reduces wrong-box records.
When the prefix is wrong, the record usually inherits the wrong owner too. That is why prefix checking is useful at gates, in yards, during surveys, and before interchange paperwork is completed.
Related product
Need the owner prefix on the phone?
PrefixCheck is built to read the box and reconcile the owner code in the field.
Open container prefix checker page