Fleet typeIdentity
Owner-operator
1 power unit. Brokers price each fleet type apart.
Carrier profile · USDOT 3971203 · MC-1483979 · Updated Jun 13, 2026
Mastiff Truck Lines Inc
1 power unitINDIANAPOLIS, IN50/100
NO OPERATING AUTHORITYMC-1483979 NO AUTHORITY
Observed fleet · trailing 24 mo daily
1Power units
Self-reported · MCS-150
—Trailers seen
None observed · 24 mo
—Avg age (yr)
Not yet decoded
Click to see how we scored it
Load decision · FMCSA snapshot · Jun 13, 2026
Limited record
Not enough federal record to assess. Verify authority and insurance directly.
Watch · 4
USDOT registration inactiveThe USDOT record is flagged inactive — the carrier may not be authorized to operate.No active operating authorityNo active common, contract, or broker authority is on file for a for-hire carrier.No inspection history despite active fleetAn established carrier reporting 1 power units has no roadside inspections — a common shell/paper-carrier signal.MCS-150 census data outdatedThe biennial MCS-150 update is 3.8 years old; fleet/mileage figures may be unreliable.
In good standing · 0
Nothing flagged.
USDOT registration33 yr registered
No active authorityInsurance (BIPD)— unknown
No filing on recordVehicle OOS · 24-mo—
No inspections · 24 moCrashes · fatal—
No crash recordVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersDecoding
—
Not yet decoded
Identity stabilityStable
3 yr unchanged
Same registration since 2022 — no chameleon / reincarnation signal.
Loading full carrier record…
Verification summary
MASTIFF TRUCK LINES INC (USDOT 3971203) is unrated by Vektor because the carrier's FMCSA record does not contain enough evidence for a safety score as of Jun 13, 2026.
The carrier has no active for-hire operating authority per FMCSA L&I as of Jun 13, 2026.
It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available as of Jun 13, 2026.
The carrier received 0 roadside inspections in the last 24 months — 0 vehicle-level and 0 driver-level, according to FMCSA roadside-inspection data refreshed Jun 13, 2026.
It reports 1 power unit and 1 driver in its most recent MCS-150 filing dated Oct 17, 2022.
It has no FMCSA-assigned safety rating in the federal record refreshed Jun 13, 2026.
02
Frequently asked
What is MASTIFF TRUCK LINES INC's USDOT number?
MASTIFF TRUCK LINES INC's USDOT number is 3971203, and its motor carrier number is MC-1483979.
Is MASTIFF TRUCK LINES INC authorized to operate?
As of Jun 13, 2026, MASTIFF TRUCK LINES INC is inactive in the FMCSA register with common, contract, broker operating authority on file.
How big is MASTIFF TRUCK LINES INC's fleet?
MASTIFF TRUCK LINES INC operates 1 power unit and 1 driver per its most recent MCS-150 filing.
Where is MASTIFF TRUCK LINES INC based?
MASTIFF TRUCK LINES INC is based in INDIANAPOLIS, IN.
03
Similar carriers near Indianapolis, IN
Comparable carriers around Indianapolis and across Indiana
More Indiana carriers
Other FMCSA-registered carriers near this one in the directory, by USDOT number.