OOLU → OOCL · carrier prefix
OOLU Container Tracking — OOCL-Owned Prefix
Track on oocl.com — official OOCL tracker
OOCL — Orient Overseas Container Line — is the Hong Kong carrier famous for running some of the biggest ships afloat, and since 2018 a COSCO group member that kept its own brand and systems.
Two codes cover the OOCL pool, and boxes keep tracking on oocl.com rather than the parent’s site, a distinction that trips up plenty of shippers.
4 letters + 7 digits, printed on the doors
OOLU check digit: worked example
O | O | L | U | 6 | 4 | 5 | 5 | 4 | 5 |
|---|---|---|---|---|---|---|---|---|---|
| 26 | 26 | 23 | 32 | 6 | 4 | 5 | 5 | 4 | 5 |
| ×1 | ×2 | ×4 | ×8 | ×16 | ×32 | ×64 | ×128 | ×256 | ×512 |
| 26 | 52 | 92 | 256 | 96 | 128 | 320 | 640 | 1024 | 2560 |
Sum 5194 → 5194 mod 11 = 2 → check digit 2 → OOLU 645545-2
OOCL prefix family
| Prefix | OOLU (this page) OOCU |
|---|
Prefix register verified against two independent sources on 2026-08-03.
Tracking with OOCL
oocl.com keeps its own cargo-tracking page separate from COSCO’s — use it for any OOLU/OOCU number even though the companies share a parent.
Frequently asked questions
Who owns the OOLU container prefix?
OOLU is registered to OOCL, founded 1969 — one of 2 prefixes the line holds in the BIC register, alongside OOCU.
How do I track a OOLU container?
Track OOLU containers free on the official OOCL tracker at oocl.com — paste the full 11-character number (like the OOLU example on this page) and no account is needed.
Is OOLU 6455452 a valid container number?
Yes — OOLU 645545-2 passes ISO 6346 validation: the weighted letter-and-digit sum for OOLU645545 leaves remainder 2 mod 11, giving check digit 2. The worked table for this OOLU example is on this page.
Is OOLU a shipping line prefix or a leasing company prefix?
OOLU is a shipping-line (carrier) prefix — OOCL both owns the boxes and moves them, so owner and tracker are the same company.