Equipment unit · VIN-decoded · NHTSA vPIC

2020 Di-Mond Trailers, Inc.

2DM421A48LS173001 · Trailer · TRAILER
Carriers run under3
14 mo
Inspections3
all-time
OOS inspections0
of 3
First seenFeb 25, 2025
AR
Last seenApr 6, 2026
CA
Inspected under 3 different carriers in 14 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
2DM421A48LS173001
Make
Di-Mond Trailers, Inc.
Model
Di-Mond Trailers, Inc.
Model year
2020
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 1, 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
2DM

Deterministic · VIN positions 1–3.

Vehicle descriptor section
421A4

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1990 or 2020

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

North American serial sequence
173001

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.

Make
DI-MOND TRAILERS, INC.

Prefix basis · 103 decoded VINs at 100.0% prefix purity.

Model
Di-Mond Trailers, Inc.

Prefix basis · 103 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Feb 25, 2025 – Apr 6, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 6, 2026CAI · Full1—DUNCAN & SON LINES INC 44035S5437N/ON
Feb 4, 2026CAII · Walk-around2—MARCO ANTONIO BUSTOS GALLARDO 3862042S5437N/ON
Feb 25, 2025ARIII · Driver-only0—KEYPOINT CARRIERS LIMITED 908748S5437N/ON
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DUNCAN & SON LINES INC44035Apr 6, 2026Apr 6, 20261AZ
MARCO ANTONIO BUSTOS GALLARDO3862042Feb 4, 2026Feb 4, 20261CA
KEYPOINT CARRIERS LIMITED908748Feb 25, 2025Feb 25, 20251ON
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.
S5437NON—DUNCAN & SON LINES INCApr 6, 2026 → Apr 6, 20261
S5437NON—MARCO ANTONIO BUSTOS GALLARDOFeb 4, 2026 → Feb 4, 20261
S5437NON—KEYPOINT CARRIERS LIMITEDFeb 25, 2025 → Feb 25, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 1, 2026