Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBD49X8MD743846 · Truck-Tractor · TRUCK
Carriers run under2
14 mo
Inspections4
all-time
OOS inspections0
of 4
First seenAug 7, 2024
MI
Last seenOct 15, 2025
NY
Inspected under 2 different carriers in 14 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
1XPBD49X8MD743846
Make
Peterbilt
Model
579
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 12, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
02

Inspection history

Every roadside inspection of this VIN, newest first · Aug 7, 2024 – Oct 15, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 15, 2025NYII · Walk-around1—1040135 ONTARIO INC 560181PB10880/ON
Sep 4, 2025NYIII · Driver-only0—1040135 ONTARIO INC 560181PB10880/ON
May 14, 2025NYII · Walk-around0—1040135 ONTARIO INC 560181PB10880/ON
Aug 7, 2024MIIII · Driver-only1—CONTRANS FLATBED GROUP GP INC 1041297PA33022/OH
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
1040135 ONTARIO INC560181May 14, 2025Oct 15, 20253ON
CONTRANS FLATBED GROUP GP INC1041297Aug 7, 2024Aug 7, 20241ON
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.
PB10880ON—1040135 ONTARIO INCMay 14, 2025 → Oct 15, 20253
PA33022OH—CONTRANS FLATBED GROUP GP INCAug 7, 2024 → Aug 7, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026