Equipment unit · VIN-decoded · NHTSA vPIC

1W16523A1H5551974

Not yet decoded
Carriers run under2
9 mo
Inspections2
all-time
OOS inspections0
of 2
First seenJan 27, 2025
NE
Last seenOct 14, 2025
NE
Inspected under 2 different carriers in 9 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
1W1

Deterministic · VIN positions 1–3.

Vehicle descriptor section
6523A

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1987 or 2017

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

North American serial sequence
551974

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 · Jan 27, 2025 – Oct 14, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 14, 2025NEIII · Driver-only1D & L COUFAL TRANSPORTATION LLC 4105925253638/NE
Jan 27, 2025NEIII · Driver-only1STEFKA & SONS LLC 1130821253638/NE
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
D & L COUFAL TRANSPORTATION LLC4105925Oct 14, 2025Oct 14, 20251NE
STEFKA & SONS LLC1130821Jan 27, 2025Jan 27, 20251NE
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.
253638NED & L COUFAL TRANSPORTATION LLCOct 14, 2025Oct 14, 20251
253638NESTEFKA & SONS LLCJan 27, 2025Jan 27, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC