SUDU → Maersk · carrier prefix
SUDU Container Tracking — Maersk-Owned Prefix
Track on maersk.com — official Maersk trackerMaersk's tracker accepts the container number directly in the link — the checker below builds it for you.
Maersk has been moving boxes since the dawn of containerisation and its fleet is second only to MSC. A century-old Copenhagen shipping house, it grew through the acquisitions of Sealand, P&O Nedlloyd and Hamburg Süd — and each purchase left its mark in the BIC register.
That is why the Maersk family spans eight prefixes: the heritage codes of absorbed lines still ride on the sides of thousands of boxes, all answering to the same maersk.com tracker.
SUDU comes from Hamburg Süd, the 150-year-old German line Maersk bought in 2017; the red boxes kept their code.
4 letters + 7 digits, printed on the doors
SUDU check digit: worked example
S | U | D | U | 5 | 6 | 5 | 7 | 6 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| 30 | 32 | 14 | 32 | 5 | 6 | 5 | 7 | 6 | 1 |
| ×1 | ×2 | ×4 | ×8 | ×16 | ×32 | ×64 | ×128 | ×256 | ×512 |
| 30 | 64 | 56 | 256 | 80 | 192 | 320 | 896 | 1536 | 512 |
Sum 3942 → 3942 mod 11 = 4 → check digit 4 → SUDU 565761-4
Maersk prefix family
Tracking with Maersk
The maersk.com tracker takes the container number straight in the URL, so a deep link opens your box directly — no form to fill.
Frequently asked questions
Who owns the SUDU container prefix?
SUDU is registered to Maersk, founded 1904 — one of 8 prefixes the line holds in the BIC register, alongside MAEU, MRKU, MSKU.
How do I track a SUDU container?
Track SUDU containers free on the official Maersk tracker at maersk.com — paste the full 11-character number (like the SUDU example on this page) and no account is needed.
Is SUDU 5657614 a valid container number?
Yes — SUDU 565761-4 passes ISO 6346 validation: the weighted letter-and-digit sum for SUDU565761 leaves remainder 4 mod 11, giving check digit 4. The worked table for this SUDU example is on this page.
Is SUDU a shipping line prefix or a leasing company prefix?
SUDU is a shipping-line (carrier) prefix — Maersk both owns the boxes and moves them, so owner and tracker are the same company.