Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X9MD734395 · Truck-Tractor · TRUCK
Carriers run under2
20 mo
Inspections5
all-time
OOS inspections0
of 5
First seenJan 15, 2024
NM
Last seenSep 11, 2025
AZ
Inspected under 2 different carriers in 20 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
1XPBDP9X9MD734395
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
Jun 29, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
View sourced platform decode
02

Inspection history

Every roadside inspection of this VIN, newest first · Jan 15, 2024 – Sep 11, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 11, 2025AZI · Full2—HOPPERS HAULING INC 771010AM56879/AZ
Apr 30, 2025AZII · Walk-around1—HOPPERS HAULING INC 771010AM56879/AZ
Feb 11, 2025CAII · Walk-around0—HOPPERS HAULING INC 771010AM56879/AZ
Jan 13, 2025NVII · Walk-around1—HOPPERS HAULING INC 771010AM56879/AZ
Jan 15, 2024NMIII · Driver-only0—T M T TRUCKING COMPANY 576123Z084814/UT
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HOPPERS HAULING INC771010Jan 13, 2025Sep 11, 20254AZ
T M T TRUCKING COMPANY576123Jan 15, 2024Jan 15, 20241CO
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.
AM56879AZ—HOPPERS HAULING INCJan 13, 2025 → Sep 11, 20254
Z084814UT—T M T TRUCKING COMPANYJan 15, 2024 → Jan 15, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 29, 2026