Equipment unit · VIN-decoded · NHTSA vPIC

2021 Brazos

4B9BKDJ24MH054621 · Trailer · TRAILER
Carriers run under2
39 mo
Inspections4
all-time
OOS inspections2
of 4
First seenJul 11, 2023
CO
Last seenOct 29, 2026
TX
Inspected under 2 different carriers in 39 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
4B9BKDJ24MH054621
Make
Brazos
Model
Brazos
Model year
2021
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Sep 20, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
4B9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BKDJ2

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1991 or 2021

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
054621

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
BRAZOS

Prefix basis · 16 decoded VINs at 100.0% prefix purity.

Model
Brazos

Prefix basis · 16 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 11, 2023 – Oct 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 29, 2026TXII · Walk-around4—FONZI EXPRESS LLC 3982120TONLY/TX
Sep 28, 2026TXII · Walk-around4OOSFONZI EXPRESS LLC 398212032SP88N/TX
Sep 23, 2025WYI · Full8OOSALTITUDE TRUCKING AND LOGISTICS COMPANY LLC 359807807U419/WY
Jul 11, 2023COIII · Driver-only1—ALTITUDE TRUCKING AND LOGISTICS COMPANY LLC 35980787U419/WY
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
FONZI EXPRESS LLC3982120Sep 28, 2026Oct 29, 20262TX
ALTITUDE TRUCKING AND LOGISTICS COMPANY LLC3598078Jul 11, 2023Sep 23, 20252WY
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.
TONLYTX2FONZI EXPRESS LLCOct 29, 2026 → Oct 29, 20261
32SP88NTX2FONZI EXPRESS LLCSep 28, 2026 → Sep 28, 20261
07U419WY—ALTITUDE TRUCKING AND LOGISTICS COMPANY LLCSep 23, 2025 → Sep 23, 20251
7U419WY—ALTITUDE TRUCKING AND LOGISTICS COMPANY LLCJul 11, 2023 → Jul 11, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Sep 20, 2026