TTNU → Triton International · lessor prefix
TTNU Container Prefix — Triton International (Leasing)
Triton International is the world’s largest container lessor — roughly seven million TEU of boxes that it owns but never sails, renting them to nearly every major line.
Five codes mark Triton steel, and seeing one tells you who owns the box — never who is moving it.
4 letters + 7 digits, printed on the doors
TTNU check digit: worked example
T | T | N | U | 8 | 5 | 4 | 9 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|
| 31 | 31 | 25 | 32 | 8 | 5 | 4 | 9 | 7 | 8 |
| ×1 | ×2 | ×4 | ×8 | ×16 | ×32 | ×64 | ×128 | ×256 | ×512 |
| 31 | 62 | 100 | 256 | 128 | 160 | 256 | 1152 | 1792 | 4096 |
Sum 8033 → 8033 mod 11 = 3 → check digit 3 → TTNU 854978-3
Triton International prefix family
Owner vs operator: the Triton International case
A Triton-prefixed box in your booking means the line rented it that week; Triton’s own systems hold no voyage data at all.
Frequently asked questions
Who owns the TTNU container prefix?
TTNU is registered to Triton International, a container leasing company (lessor) — the BIC register lists it together with TRLU, TCLU, TCNU, but the boxes sail in other lines' fleets.
Which line do I track a TTNU container with?
Not with Triton International — a TTNU 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 TTNU number there.
Is TTNU 8549783 a valid container number?
Yes — TTNU 854978-3 passes ISO 6346 validation: the weighted letter-and-digit sum for TTNU854978 leaves remainder 3 mod 11, giving check digit 3. The worked table for this TTNU example is on this page.
Is TTNU a shipping line prefix or a leasing company prefix?
TTNU is a leasing-company (lessor) prefix — Triton International owns the steel box, while a shipping line operates it, which is why owner and tracker differ.