Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9XXMD758530 · Truck-Tractor · TRUCK
Carriers run under3
24 mo
Inspections4
all-time
OOS inspections0
of 4
First seenDec 13, 2023
WY
Last seenDec 4, 2025
TX
Inspected under 3 different carriers in 24 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
1XPBDP9XXMD758530
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 · Dec 13, 2023 – Dec 4, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 4, 2025TXII · Walk-around3—STARR OILFIELD SERVICES LLC 17406243NH071/OK
Jul 22, 2025COIII · Driver-only0—HORIZON TRANSPORT INC 273286DZSD36/CO
May 16, 2024IDI · Full0—EW WYLIE LLC 8276223909P/ND
Dec 13, 2023WYI · Full3—EW WYLIE LLC 8276223909P/ND
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
STARR OILFIELD SERVICES LLC1740624Dec 4, 2025Dec 4, 20251OK
HORIZON TRANSPORT INC273286Jul 22, 2025Jul 22, 20251IN
EW WYLIE LLC827622Dec 13, 2023May 16, 20242ND
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.
3NH071OK—STARR OILFIELD SERVICES LLCDec 4, 2025 → Dec 4, 20251
DZSD36CO—HORIZON TRANSPORT INCJul 22, 2025 → Jul 22, 20251
3909PND—EW WYLIE LLCDec 13, 2023 → May 16, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026
2021 Peterbilt 579 — VIN 1XPBDP9XXMD758530