Equipment unit · VIN-decoded · NHTSA vPIC

1NKZX4TX5MJ446159

Not yet decoded
Carriers run under2
20 mo
Inspections2
all-time
OOS inspections0
of 2
First seenJun 23, 2023
NJ
Last seenFeb 21, 2025
IN
Inspected under 2 different carriers in 20 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

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

Decode evidence & sources

Deterministic structure

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

World manufacturer identifier
1NK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ZX4TX

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

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
446159

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
KENWORTH

Prefix basis · 2,638 decoded VINs at 100.0% prefix purity.

Model
T880

Prefix basis · 2,638 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 · Jun 23, 2023 – Feb 21, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 21, 2025INII · Walk-around2ISENBERG CONCRETE CONSTRUCTION INC 9133333510289/IN
Jun 23, 2023NJII · Walk-around5ARIAS TRUCKING LLC 3272338AX363A/NJ
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ISENBERG CONCRETE CONSTRUCTION INC913333Feb 21, 2025Feb 21, 20251IN
ARIAS TRUCKING LLC3272338Jun 23, 2023Jun 23, 20231NJ
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.
3510289INISENBERG CONCRETE CONSTRUCTION INCFeb 21, 2025Feb 21, 20251
AX363ANJARIAS TRUCKING LLCJun 23, 2023Jun 23, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC