UESU → UES International · lessor prefix
UESU Container Prefix — UES International (Leasing)
UES International is a Hong Kong lessor whose fleet concentrates on intra-Asia trades and the Chinese leasing market.
One registered code covers its pool, seen most often on regional services.
4 letters + 7 digits, printed on the doors
UESU check digit: worked example
U | E | S | U | 7 | 1 | 5 | 3 | 5 | 6 |
|---|---|---|---|---|---|---|---|---|---|
| 32 | 15 | 30 | 32 | 7 | 1 | 5 | 3 | 5 | 6 |
| ×1 | ×2 | ×4 | ×8 | ×16 | ×32 | ×64 | ×128 | ×256 | ×512 |
| 32 | 30 | 120 | 256 | 112 | 32 | 320 | 384 | 1280 | 3072 |
Sum 5638 → 5638 mod 11 = 6 → check digit 6 → UESU 715356-6
UES International prefix family
| Prefix | UESU (this page) |
|---|
Prefix register verified against two independent sources on 2026-08-03.
Owner vs operator: the UES International case
UES boxes follow the usual lessor rule: your carrier, not UES, answers tracking queries.
Frequently asked questions
Who owns the UESU container prefix?
UESU is registered to UES International, a container leasing company (lessor) — the BIC register lists it, but the boxes sail in other lines' fleets.
Which line do I track a UESU container with?
Not with UES International — a UESU box is leased, so the tracking data lives with the shipping line named on your booking confirmation or bill of lading; open that line's tracker and paste the UESU number there.
Is UESU 7153566 a valid container number?
Yes — UESU 715356-6 passes ISO 6346 validation: the weighted letter-and-digit sum for UESU715356 leaves remainder 6 mod 11, giving check digit 6. The worked table for this UESU example is on this page.
Is UESU a shipping line prefix or a leasing company prefix?
UESU is a leasing-company (lessor) prefix — UES International owns the steel box, while a shipping line operates it, which is why owner and tracker differ.