Equipment unit · VIN-decoded · NHTSA vPIC

1UNST4223ML153707

Not yet decoded
Carriers run under1
24 mo
Inspections2
all-time
OOS inspections0
of 2
First seenJun 27, 2023
OK
Last seenJun 12, 2025
OK
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
3 · valid

Deterministic · position 9; calculated value 3.

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
153707

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 · Jun 27, 2023 – Jun 12, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 12, 2025OKII · Walk-around3RIVER RAT OILFIELD SERVICES LLC 2800862AZ1406/OK
Jun 27, 2023OKII · Walk-around0RIVER RAT OILFIELD SERVICES LLC 2800862AZ1406/OK
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
RIVER RAT OILFIELD SERVICES LLC2800862Jun 27, 2023Jun 12, 20252OK
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.
AZ1406OKRIVER RAT OILFIELD SERVICES LLCJun 27, 2023Jun 12, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC