MACS bill of lading tracking

How to read a MACS bill of lading number

MCSM6769346 format-valid example — not a live shipment

A bill of lading number identifies the transport document, not the box: it usually starts with the carrier’s four-letter code (its SCAC) — MCSM for MACS — followed by the document number, e.g. MCSM6769346.

You’ll find it top-right on the B/L or sea waybill. It’s different from the container number (which identifies the physical box and can cover several containers on one B/L) and from your booking reference — if one identifier returns nothing, try the other on the carrier’s page.

If your MACS tracking isn’t working

1. 1 Check the number format first

   Bill-of-lading numbers start with the carrier’s letter code followed by the document number (like MCSM6769346). Make sure you’re using the B/L number, not the container number or the booking reference — they’re three different identifiers on the same paperwork.

2. 2 Make sure the number was issued by this carrier

   If your shipment was booked through a freight forwarder or NVOCC, the number on your paperwork may be the forwarder’s own reference, which MACS’ system won’t recognise. Ask the party that issued your documents which carrier number to use — or paste the number on our homepage and let the prefix detector identify the issuer.

3. 3 Too early or too late

   Timing matters: a number that was only just issued may not show results yet, and carriers remove old shipments from public tracking a few weeks after delivery. If the shipment is very new or long delivered, an empty result doesn’t mean the number is wrong.

4. 4 Paste carefully on MACS’ page

   Because MACS’ form can’t be pre-filled from a link, paste the number exactly — with no leading or trailing spaces and no extra characters copied from an email. If the page shows a security check, complete it and search again.

5. 5 Still nothing?

   Contact whoever sold you the freight service (your forwarder, broker, or MACS directly) with the bill of lading number and the booking reference — they can see internal status that public tracking doesn’t show.

Frequently asked questions

How do I track a MACS bill of lading?

Enter your bill of lading number in the box above and select Track. We open MACS’ official tracking page so you can paste your number. MACS bill of lading numbers usually begin with MCSM.

What does a MACS bill of lading number look like?

Bill-of-lading numbers usually start with the carrier’s four-letter code (its SCAC prefix) followed by the document number — for example COSU6285551440. For MACS the carrier code is MCSM. A format-valid example is MCSM6769346.

Why does the MACS page open without my number filled in?

MACS’ tracking form is protected (captcha, login, or a non-shareable form), so the number can’t be passed in the link. We open the correct page — just paste your number there.

What if my number doesn’t start with MCSM?

Then it probably wasn’t issued by MACS — shipments booked through a freight forwarder or partner carrier often travel under a different issuer’s bill of lading number. Paste the number on our homepage and the prefix detector will suggest the right carriers and forwarder, or check your shipping documents for who issued them.

Is this MACS’ official tracking site?

No — this is an independent directory of official carrier tracking pages. We keep a verified link to MACS’ own tracking page and send you there; the tracking data you see comes directly from MACS, and we never see or store it.