Equipment unit · VIN-decoded · NHTSA vPIC

1P9PH2123FW542725

Not yet decoded
Carriers run under2
9 mo
Inspections2
all-time
OOS inspections1
of 2
First seenOct 9, 2025
CA
Last seenJul 22, 2026
CA
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
1P9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
PH212

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1985 or 2015

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

North American serial sequence
542725

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
PT WELDING

Prefix basis · 13 decoded VINs at 92.3% prefix purity.

Model
PT WELDING

Prefix basis · 13 decoded VINs at 92.3% 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 · Oct 9, 2025 – Jul 22, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 22, 2026CAI · Full6OOSAG4 TRUCKING 27778304PA8277/CA
Oct 9, 2025CAII · Walk-around0TOP SHELF FREIGHT CARRIERS INC 33542054PA8277/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
AG4 TRUCKING2777830Jul 22, 2026Jul 22, 20261CA
TOP SHELF FREIGHT CARRIERS INC3354205Oct 9, 2025Oct 9, 20251CA
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.
4PA8277CA3AG4 TRUCKINGJul 22, 2026Jul 22, 20261
4PA8277CATOP SHELF FREIGHT CARRIERS INCOct 9, 2025Oct 9, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC