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HMMU container prefix

A container number beginning with HMMU is owned by HMM, which operates under SCAC HDMU. Track a HMMU container by its number.

Prefix	HMMU
Owner	HMM
Operating carrier	HMM
SCAC	HDMU
Type	Carrier-owned

Track a HMMU container →

Other prefixes owned by HMM

How a container number is built

Every shipping container carries an ISO 6346 number: four letters then seven digits (six serial + one check digit). The first three letters are the owner code and the fourth is always U for a freight container — so the four-letter prefix identifies who owns the box. Owner ≠ always the line carrying it: leasing companies own millions of boxes that sail under many carriers, which is why a leasing prefix is tracked by bill of lading, not by the prefix.

HMMU — FAQ

What shipping line is HMMU?

HMMU containers are owned by HMM (SCAC HDMU).

How do I track a HMMU container?

Track a HMMU container by its number on HMM.

Owner data from TrackingMCP's verified BIC prefix registry. Updated 2026-07-14.