Containernummer

Containernummer, or container number, is the globally recognized identifier assigned to a shipping container used in intermodal transport. The code is defined by ISO 6346, an international standard for the identification, coding, and marking of shipping containers. It helps ensure consistent identification across carriers, ports, and documentation.

Structure and example: The standard container number consists of four-letter owner code, a single equipment category identifier (usually U for freight containers), a six-digit serial number, and a one-digit check digit. In practice it is shown as a four-letter prefix, a space, the category letter, a space, six digits, and the check digit, for example MSCU 123456 7. The owner code identifies the registered owner or operator; the serial number differentiates individual containers; the check digit is used for error detection.

Usage: The containernummer is used in documentation such as bills of lading and cargo manifests, in port and terminal operations, and in IT systems for tracking and data interchange among carriers, shippers, and customs. It is printed on the container’s side and is commonly read by barcode scanners and RFID devices.

Notes: The format is internationally recognized and supports accurate identification across languages and systems. The owner code is registered to a specific company, while the serial number ensures uniqueness for each unit; together with the check digit, they enable quick validation of data entry or scans.

See also: ISO 6346; container prefix; shipping container; intermodal transport.