MRKU → Maersk · carrier prefix
MRKU 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.
4 letters + 7 digits, printed on the doors
MRKU check digit: worked example
M | R | K | U | 6 | 5 | 5 | 5 | 1 | 8 |
|---|---|---|---|---|---|---|---|---|---|
| 24 | 29 | 21 | 32 | 6 | 5 | 5 | 5 | 1 | 8 |
| ×1 | ×2 | ×4 | ×8 | ×16 | ×32 | ×64 | ×128 | ×256 | ×512 |
| 24 | 58 | 84 | 256 | 96 | 160 | 320 | 640 | 256 | 4096 |
Sum 5990 → 5990 mod 11 = 6 → check digit 6 → MRKU 655518-6
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 MRKU container prefix?
MRKU is registered to Maersk, founded 1904 — one of 8 prefixes the line holds in the BIC register, alongside MAEU, MSKU, PONU.
How do I track a MRKU container?
Track MRKU containers free on the official Maersk tracker at maersk.com — paste the full 11-character number (like the MRKU example on this page) and no account is needed.
Is MRKU 6555186 a valid container number?
Yes — MRKU 655518-6 passes ISO 6346 validation: the weighted letter-and-digit sum for MRKU655518 leaves remainder 6 mod 11, giving check digit 6. The worked table for this MRKU example is on this page.
Is MRKU a shipping line prefix or a leasing company prefix?
MRKU is a shipping-line (carrier) prefix — Maersk both owns the boxes and moves them, so owner and tracker are the same company.