Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBD49X3MD735623 · Truck-Tractor · TRUCK
Carriers run under3
32 mo
Inspections6
all-time
OOS inspections0
of 6
First seenSep 22, 2023
KS
Last seenMay 30, 2026
CO
Inspected under 3 different carriers in 32 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
1XPBD49X3MD735623
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 25, 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 · Sep 22, 2023 – May 30, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 30, 2026COIII · Driver-only0—DEL SOL FREIGHT LLC 4371140R749136/TX
Apr 2, 2026COIII · Driver-only1—DEL SOL FREIGHT LLC 4371140R749136/TX
Dec 11, 2024LAIII · Driver-only1—ISG TRANSPORT LLC 4193529R749136/TX
Nov 13, 2024TXIII · Driver-only0—ISG TRANSPORT LLC 4193529R749136/TX
Mar 6, 2024NCIII · Driver-only0—D & M CARRIERS LLC 9633003JZ637/OK
Sep 22, 2023KSII · Walk-around2—D & M CARRIERS LLC 9633003EP811/OK
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DEL SOL FREIGHT LLC4371140Apr 2, 2026May 30, 20262TX
ISG TRANSPORT LLC4193529Nov 13, 2024Dec 11, 20242TX
D & M CARRIERS LLC963300Sep 22, 2023Mar 6, 20242OK
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.
R749136TX—DEL SOL FREIGHT LLCApr 2, 2026 → May 30, 20262
R749136TX—ISG TRANSPORT LLCNov 13, 2024 → Dec 11, 20242
3JZ637OK1D & M CARRIERS LLCMar 6, 2024 → Mar 6, 20241
3EP811OK1D & M CARRIERS LLCSep 22, 2023 → Sep 22, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026