Equipment unit · VIN-decoded · NHTSA vPIC

2022 Mac

558MTB321NK006741 · Trailer · TRAILER
Carriers run under3
34 mo
Inspections13
all-time
OOS inspections1
of 13
First seenJul 18, 2023
OK
Last seenMay 13, 2026
NM
Inspected under 3 different carriers in 34 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

VIN
558MTB321NK006741
Make
Mac
Model
MAC
Model year
2022
Body class
Trailer
Vehicle type
TRAILER
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 16, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
558

Deterministic · VIN positions 1–3.

Vehicle descriptor section
MTB32

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1992 or 2022

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

North American serial sequence
006741

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
MAC

Prefix basis · 196 decoded VINs at 100.0% prefix purity.

Model
MAC

Prefix basis · 196 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.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2022

Observed directly for this VIN via NHTSA vPIC.

Observed make
MAC

Observed directly for this VIN via NHTSA vPIC.

Observed model
MAC

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

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 · Jul 18, 2023 – May 13, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 13, 2026NMI · Full0KAG ENERGY LLC 469756PG11680/IN
Feb 24, 2026NMII · Walk-around0KAG ENERGY LLC 469756STB7891/MN
Jan 18, 2026COII · Walk-around0KAG ENERGY LLC 469756STB7891/MN
Dec 12, 2025COI · Full2ALTA TRANSPORTATION LLC 1188080STB7891/MN
Sep 8, 2025COIII · Driver-only0ALTA TRANSPORTATION LLC 1188080STB7891/MN
Jul 29, 2025COII · Walk-around0ALTA TRANSPORTATION LLC 1188080STB7891/MN
Jun 27, 2025NMII · Walk-around0ALTA TRANSPORTATION LLC 1188080STB7891/MN
Apr 15, 2025COIII · Driver-only0ALTA TRANSPORTATION LLC 1188080STB7891/MN
Apr 4, 2025COII · Walk-around0ALTA TRANSPORTATION LLC 1188080STB7891/MN
Aug 12, 2024COII · Walk-around0ALTA TRANSPORTATION LLC 1188080STB7891/MN
Aug 5, 2024NMII · Walk-around0ALTA TRANSPORTATION LLC 1188080698626/KS
May 12, 2024NMII · Walk-around0ALTA TRANSPORTATION LLC 1188080698626/KS
Jul 18, 2023OKI · Full8OOSREEDS TRANSPORT LLC 3569667698262/KS
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
KAG ENERGY LLC469756Jan 18, 2026May 13, 20263OH
ALTA TRANSPORTATION LLC1188080May 12, 2024Dec 12, 20259CO
REEDS TRANSPORT LLC3569667Jul 18, 2023Jul 18, 20231KS
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.
PG11680IN2KAG ENERGY LLCMay 13, 2026May 13, 20261
STB7891MN2KAG ENERGY LLCJan 18, 2026Feb 24, 20262
STB7891MNALTA TRANSPORTATION LLCAug 12, 2024Dec 12, 20257
698626KSALTA TRANSPORTATION LLCMay 12, 2024Aug 5, 20242
698262KSREEDS TRANSPORT LLCJul 18, 2023Jul 18, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026