Equipment unit · VIN-decoded · NHTSA vPIC

1UNST4221BL081595

Not yet decoded
Carriers run under2
37 mo
Inspections2
all-time
OOS inspections1
of 2
First seenAug 24, 2023
TX
Last seenSep 29, 2026
TX
Inspected under 2 different carriers in 37 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
1981 or 2011

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

North American serial sequence
081595

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 24, 2023 – Sep 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 29, 2026TXII · Walk-around9OOSEDGE NT SERVICES LLC 3100794241B983/TX
Aug 24, 2023TXII · Walk-around10—4C LOGISTICS LLC 4117438241B983/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
EDGE NT SERVICES LLC3100794Sep 29, 2026Sep 29, 20261TX
4C LOGISTICS LLC4117438Aug 24, 2023Aug 24, 20231TX
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.
241B983TX2EDGE NT SERVICES LLCSep 29, 2026 → Sep 29, 20261
241B983TX—4C LOGISTICS LLCAug 24, 2023 → Aug 24, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC