Equipment unit · VIN-decoded · NHTSA vPIC

2025 Monon

1NNVX5721SM231539 · Trailer · TRAILER
Carriers run under2
3 mo
Inspections2
all-time
OOS inspections0
of 2
First seenFeb 26, 2026
TX
Last seenMay 19, 2026
TX
Inspected under 2 different carriers in 3 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
1NNVX5721SM231539
Make
Monon
Model
Monon
Model year
2025
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 28, 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
1NN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
VX572

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1995 or 2025

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

North American serial sequence
231539

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
2025

Observed directly for this VIN via NHTSA vPIC.

Observed make
MONON

Observed directly for this VIN via NHTSA vPIC.

Observed model
Monon

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 · Feb 26, 2026 – May 19, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 19, 2026TXII · Walk-around1WEST TEXAS DRUM COMPANY LTD 542625006B882/TX
Feb 26, 2026TXII · Walk-around1WEST TEXAS DRUM COMPANY LTD II 1000465006B882/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WEST TEXAS DRUM COMPANY LTD542625May 19, 2026May 19, 20261TX
WEST TEXAS DRUM COMPANY LTD II1000465Feb 26, 2026Feb 26, 20261TX
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.
006B882TXWEST TEXAS DRUM COMPANY LTDMay 19, 2026May 19, 20261
006B882TXWEST TEXAS DRUM COMPANY LTD IIFeb 26, 2026Feb 26, 20261
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 28, 2026