Container Prefix Directory

WSMU Container Prefix Owner

WSMU is a container owner code associated with Western Sales & Testing Inc.. Learn how BIC container prefixes identify equipment owners and operators.

Prefix: WSMU
Owner or operator: Western Sales & Testing Inc.

The four-letter prefix WSMU appears at the start of ISO container identification numbers and is associated with Western Sales & Testing Inc..

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.

WSMU container number format

A container number starting with WSMU has the four-letter prefix, a six-digit serial number, and one check digit, for example WSMU1234567.

Who uses WSMU containers

WSMU is registered to Western Sales & Testing Inc.. 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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WSMU Container Tracking – Western Sales & Testing Inc.

Frequently asked questions

Who owns WSMU containers?

The WSMU prefix is associated with Western Sales & Testing Inc..

Does the WSMU 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.