TGBU → Textainer · lessor prefix
TGBU Container Prefix — Textainer (Leasing)
Textainer, a Bermuda-based lessor managing about four million TEU, became part of Stonepeak in 2024 and absorbed the Seaco fleet at the end of 2025.
Its register footprint is the widest of any lessor — seven codes including two inherited from Seaco — which makes Textainer prefixes the ones most often misread as carrier codes.
TGBU, like TEMU, is Textainer’s registration despite frequent misattribution to Triton.
4 letters + 7 digits, printed on the doors
TGBU check digit: worked example
T | G | B | U | 2 | 3 | 6 | 6 | 5 | 2 |
|---|---|---|---|---|---|---|---|---|---|
| 31 | 17 | 12 | 32 | 2 | 3 | 6 | 6 | 5 | 2 |
| ×1 | ×2 | ×4 | ×8 | ×16 | ×32 | ×64 | ×128 | ×256 | ×512 |
| 31 | 34 | 48 | 256 | 32 | 96 | 384 | 768 | 1280 | 1024 |
Sum 3953 → 3953 mod 11 = 4 → check digit 4 → TGBU 236652-4
Textainer prefix family
Owner vs operator: the Textainer case
Whatever Textainer code is on the door, the tracking answer lives with the line on your paperwork — Textainer only owns the asset.
Frequently asked questions
Who owns the TGBU container prefix?
TGBU is registered to Textainer, a container leasing company (lessor) — the BIC register lists it together with TGHU, TEXU, TEMU, but the boxes sail in other lines' fleets.
Which line do I track a TGBU container with?
Not with Textainer — a TGBU 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 TGBU number there.
Is TGBU 2366524 a valid container number?
Yes — TGBU 236652-4 passes ISO 6346 validation: the weighted letter-and-digit sum for TGBU236652 leaves remainder 4 mod 11, giving check digit 4. The worked table for this TGBU example is on this page.
Is TGBU a shipping line prefix or a leasing company prefix?
TGBU is a leasing-company (lessor) prefix — Textainer owns the steel box, while a shipping line operates it, which is why owner and tracker differ.