Equipment unit · VIN-decoded · NHTSA vPIC

2021 Ldj Manufacturing, Inc.

56ZL1UJ29MP000637 · Trailer · TRAILER
Carriers run under2
16 mo
Inspections3
all-time
OOS inspections2
of 3
First seenAug 20, 2024
TX
Last seenDec 30, 2025
TX
Inspected under 2 different carriers in 16 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
56ZL1UJ29MP000637
Make
Ldj Manufacturing, Inc.
Model
LDJ MANUFACTURING, INC.
Model year
2021
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 9, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
56Z

Deterministic · VIN positions 1–3.

Vehicle descriptor section
L1UJ2

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1991 or 2021

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
000637

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
LDJ MANUFACTURING, INC.

Observed directly for this VIN via NHTSA vPIC.

Observed model
LDJ MANUFACTURING, INC.

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

Not established

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Aug 20, 2024 – Dec 30, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 30, 2025TXI · Full3DEL MAR CONTRACTING INC 2911008025206M/TX
Aug 28, 2024TXI · Full7OOSQUEST CONTRACTING INC 1274172025206M/TX
Aug 20, 2024TXI · Full6OOSDEL MAR CONTRACTING INC 2911008025206M/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DEL MAR CONTRACTING INC2911008Aug 20, 2024Dec 30, 20252TX
QUEST CONTRACTING INC1274172Aug 28, 2024Aug 28, 20241TX
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
025206MTXDEL MAR CONTRACTING INCAug 20, 2024Dec 30, 20252
025206MTXQUEST CONTRACTING INCAug 28, 2024Aug 28, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 9, 2026