Equipment unit · VIN-decoded · NHTSA vPIC

4KNBF2123ML162493

Not yet decoded
Carriers run under1
20 mo
Inspections3
all-time
OOS inspections1
of 3
First seenSep 19, 2024
WA
Last seenMay 20, 2026
WA
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
4KN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BF212

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
162493

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
MONROE TOWMASTER

Prefix basis · 5 decoded VINs at 100.0% prefix purity.

Model
Monroe Towmaster

Prefix basis · 5 decoded VINs at 100.0% 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 · Sep 19, 2024 – May 20, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 20, 2026WAI · Full2OOSNORTH SKY COMMUNICATIONS LLC 691616HV70692/OR
Oct 21, 2025WAII · Walk-around0NORTH SKY COMMUNICATIONS LLC 691616HV70692/OR
Sep 19, 2024WAIII · Driver-only0NORTH SKY COMMUNICATIONS LLC 691616HV70692/OR
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
NORTH SKY COMMUNICATIONS LLC691616Sep 19, 2024May 20, 20263WA
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.
HV70692ORNORTH SKY COMMUNICATIONS LLCSep 19, 2024May 20, 20263
Sources: FMCSA SAFER · L&I · NHTSA vPIC