Equipment unit · VIN-decoded · NHTSA vPIC

2017 Blacksmith Trailers

4B9B4D327HX103121 · Trailer · TRAILER
Carriers run under3
33 mo
Inspections9
all-time
OOS inspections2
of 9
First seenAug 10, 2023
TX
Last seenMay 6, 2026
TX
Inspected under 3 different carriers in 33 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
4B9B4D327HX103121
Make
Blacksmith Trailers
Model
Blacksmith Trailers
Model year
2017
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 21, 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
B4D32

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1987 or 2017

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

North American serial sequence
103121

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
BLACKSMITH TRAILERS

Prefix basis · 26 decoded VINs at 100.0% prefix purity.

Model
Blacksmith Trailers

Prefix basis · 26 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.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2017

Observed directly for this VIN via NHTSA vPIC.

Observed make
BLACKSMITH TRAILERS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Blacksmith Trailers

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

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 · Aug 10, 2023 – May 6, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 6, 2026TXI · Full2BLAIR ENGINEERING CONSTRUCTION INC 2748640185C800/TX
Jan 14, 2026TXII · Walk-around1BLAIR ENGINEERING CONSTRUCTION INC 2748640185C800/TX
Sep 29, 2025TXII · Walk-around6BLAIR ENGINEERING CONSTRUCTION INC 2748640185C800/TX
Jul 23, 2025TXI · Full2BLAIR ENGINEERING CONSTRUCTION INC 27486401L66653/TX
Jul 23, 2025TXI · Full2BLAIR ENGINEERING CONSTRUCTION INC 2748640185C800/TX
Jan 13, 2025TXII · Walk-around1BLAIR ENGINEERING CONSTRUCTION INC 2748640185C800/TX
Aug 27, 2024TXII · Walk-around3OOSJM MATERIALS INC 772441185C800/TX
Dec 5, 2023TXI · Full2JESUS SANTANA CANTU 3702400185C800/TX
Aug 10, 2023TXII · Walk-around3OOSJESUS SANTANA CANTU 3702400185C800/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BLAIR ENGINEERING CONSTRUCTION INC2748640Jan 13, 2025May 6, 20266TX
JM MATERIALS INC772441Aug 27, 2024Aug 27, 20241TX
JESUS SANTANA CANTU3702400Aug 10, 2023Dec 5, 20232TX
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.
185C800TXBLAIR ENGINEERING CONSTRUCTION INCJan 13, 2025May 6, 20265
1L66653TXBLAIR ENGINEERING CONSTRUCTION INCJul 23, 2025Jul 23, 20251
185C800TXJM MATERIALS INCAug 27, 2024Aug 27, 20241
185C800TXJESUS SANTANA CANTUAug 10, 2023Dec 5, 20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026