Equipment unit · VIN-decoded · NHTSA vPIC

1UNST4221PL191196

Not yet decoded
Carriers run under2
19 mo
Inspections2
all-time
OOS inspections1
of 2
First seenAug 13, 2024
LA
Last seenMar 16, 2026
LA
Inspected under 2 different carriers in 19 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
1UN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ST422

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1993 or 2023

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

North American serial sequence
191196

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.

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 · Aug 13, 2024 – Mar 16, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 16, 2026LAII · Walk-around0STATE LINE VACUUM SERVICES LLC 1569645J382567/LA
Aug 13, 2024LAII · Walk-around4OOSSTALLION INFRASTRUCTURE SERVICES LTD 1184736J911304/LA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
STATE LINE VACUUM SERVICES LLC1569645Mar 16, 2026Mar 16, 20261LA
STALLION INFRASTRUCTURE SERVICES LTD1184736Aug 13, 2024Aug 13, 20241TX
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.
J382567LASTATE LINE VACUUM SERVICES LLCMar 16, 2026Mar 16, 20261
J911304LASTALLION INFRASTRUCTURE SERVICES LTDAug 13, 2024Aug 13, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC