Equipment unit · VIN-decoded · NHTSA vPIC

2021 Carmex

3A9DM4831MG019142 · TRAILER
Carriers run under2
18 mo
Inspections12
all-time
OOS inspections3
of 12
First seenDec 13, 2023
TX
Last seenJun 12, 2025
TX
Inspected under 2 different carriers in 18 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
3A9DM4831MG019142
Make
Carmex
Model
Not decoded
Model year
2021
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 17, 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
3A9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DM483

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

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
019142

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
CARMEX

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

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 · Dec 13, 2023 – Jun 12, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 12, 2025TXII · Walk-around8OOSEDELMIRO MELENDEZ HEREBIA 297725867UN1P/MX
Oct 29, 2024TXI · Full1JORGE ANTONIO SEPULVEDA 247273967UN1P/MX
Oct 22, 2024TXII · Walk-around3JORGE ANTONIO SEPULVEDA 247273967UN1P/MX
Sep 18, 2024TXI · Full2JORGE ANTONIO SEPULVEDA 247273967UN1P/MX
Jun 25, 2024TXI · Full1JORGE ANTONIO SEPULVEDA 247273967UN1P/MX
Jun 10, 2024TXI · Full4EDELMIRO MELENDEZ HEREBIA 297725867UN1P/MX
May 30, 2024TXII · Walk-around2EDELMIRO MELENDEZ HEREBIA 297725867UN1P/MX
May 27, 2024TXII · Walk-around5EDELMIRO MELENDEZ HEREBIA 297725867UN1P/MX
Feb 15, 2024TXI · Full2JORGE ANTONIO SEPULVEDA 247273967UN1P/MX
Dec 27, 2023TXI · Full8OOSJORGE ANTONIO SEPULVEDA 247273967UN1P/MX
Dec 13, 2023TXII · Walk-around2EDELMIRO MELENDEZ HEREBIA 297725867UN1P/MX
Dec 13, 2023TXII · Walk-around6OOSEDELMIRO MELENDEZ HEREBIA 297725867UN1P/MX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
EDELMIRO MELENDEZ HEREBIA2977258Dec 13, 2023Jun 12, 20256TA
JORGE ANTONIO SEPULVEDA2472739Dec 27, 2023Oct 29, 20246TA
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.
67UN1PMXEDELMIRO MELENDEZ HEREBIADec 13, 2023Jun 12, 20256
67UN1PMXJORGE ANTONIO SEPULVEDADec 27, 2023Oct 29, 20246
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026