Equipment unit · VIN-decoded · NHTSA vPIC

2017 Peterbilt 579

1XPBD49X1HD356352 · Truck-Tractor · TRUCK
Carriers run under2
25 mo
Inspections5
all-time
OOS inspections1
of 5
First seenNov 8, 2023
CA
Last seenDec 16, 2025
CA
Inspected under 2 different carriers in 25 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
1XPBD49X1HD356352
Make
Peterbilt
Model
579
Model year
2017
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 28, 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 · Nov 8, 2023 – Dec 16, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 16, 2025CAII · Walk-around0—DOMINGUEZ BYK INC 27113339G29501/CA
Nov 21, 2025CAIII · Driver-only3OOSDOMINGUEZ BYK INC 27113339G29501/CA
Dec 16, 2024CAII · Walk-around2—DOMINGUEZ BYK INC 27113339G29501/CA
Apr 17, 2024CAII · Walk-around1—COWIN EQUIPMENT COMPANY INC 2743339G29501/CA
Nov 8, 2023CAII · Walk-around1—DOMINGUEZ BYK INC 27113339G29501/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DOMINGUEZ BYK INC2711333Nov 8, 2023Dec 16, 20254CA
COWIN EQUIPMENT COMPANY INC274333Apr 17, 2024Apr 17, 20241AL
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.
9G29501CA—DOMINGUEZ BYK INCNov 8, 2023 → Dec 16, 20254
9G29501CA—COWIN EQUIPMENT COMPANY INCApr 17, 2024 → Apr 17, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026
2017 Peterbilt 579 — VIN 1XPBD49X1HD356352