Container Prefix Directory

PONU Container Prefix Owner

PONU is a container owner code associated with Maersk Line. Learn how BIC container prefixes identify equipment owners and operators.

Prefix: PONU
Owner or operator: Maersk Line

The four-letter prefix PONU appears at the start of ISO container identification numbers and is associated with Maersk Line.

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.

PONU container number format

A container number starting with PONU has the four-letter prefix, a six-digit serial number, and one check digit, for example PONU1234567.

Who uses PONU containers

PONU is registered to Maersk Line. 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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PONU Container Tracking – Maersk Line

Frequently asked questions

Who owns PONU containers?

The PONU prefix is associated with Maersk Line.

Does the PONU 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.