Equipment unit · VIN-decoded · NHTSA vPIC

1XKYD49X4MJ445814

Not yet decoded
Carriers run under2
24 mo
Inspections2
all-time
OOS inspections0
of 2
First seenAug 9, 2023
TN
Last seenAug 25, 2025
WV
Inspected under 2 different carriers in 24 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YD49X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
445814

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 · 43,483 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 43,483 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 · Aug 9, 2023 – Aug 25, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 25, 2025WVII · Walk-around3MASON TRANSPORT COMPANY LLC 2575962U4559HY/TN
Aug 9, 2023TNI · Full1FIRSTFLEET INC 3138913019029/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MASON TRANSPORT COMPANY LLC2575962Aug 25, 2025Aug 25, 20251TN
FIRSTFLEET INC313891Aug 9, 2023Aug 9, 20231TN
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.
U4559HYTNMASON TRANSPORT COMPANY LLCAug 25, 2025Aug 25, 20251
3019029INFIRSTFLEET INCAug 9, 2023Aug 9, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC