Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 389

1NPXX4EX6MD736519 · Truck · INCOMPLETE VEHICLE
Carriers run under2
27 mo
Inspections5
all-time
OOS inspections0
of 5
First seenApr 24, 2024
PA
Last seenJul 22, 2026
PA
Inspected under 2 different carriers in 27 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
1NPXX4EX6MD736519
Make
Peterbilt
Model
389
Model year
2021
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 26, 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 · Apr 24, 2024 – Jul 22, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 22, 2026PAII · Walk-around5—IRON VALLEY TRUCKING LLC 4166272382ED31/MD
Jul 22, 2026PAII · Walk-around5—IRON VALLEY TRUCKING LLC 4166272382ED31/MD
May 8, 2025MDII · Walk-around0—SMS LLC 1980418291ED96/MD
May 9, 2024NJII · Walk-around2—SMS LLC 1980418291ED96/MD
Apr 24, 2024PAIII · Driver-only1—SMS LLC 1980418291ED96/MD
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
IRON VALLEY TRUCKING LLC4166272Jul 22, 2026Jul 22, 20262MD
SMS LLC1980418Apr 24, 2024May 8, 20253PA
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.
382ED31MD1IRON VALLEY TRUCKING LLCJul 22, 2026 → Jul 22, 20262
291ED96MD—SMS LLCApr 24, 2024 → May 8, 20253
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026