License Plate OK DS6958 (Oklahoma) — Mountain Line Inc
USDOT 3558740 · 2026 Great Dane Polar Tank Trailer
Recorded vehicle, plate and carrier history
These are dated observations in the records available to us. They do not establish ownership, a sale, a transfer date, or continuous use between observations. The latest observation may not describe today’s vehicle or carrier.
| Observed dates | VIN | Plate | Reported carrier |
|---|---|---|---|
| 2026-03-12 | 3H6KR4225T3180593 | OK DS6958 | MOUNTAIN LINE INC · USDOT 3558740 |
| 2026-03-12 | 3H6KR4225T3180593 | OK DS6958 | FOUR CORNERS TRANSPORT LLC · USDOT 4173159 |
Evidence: FMCSA inspection observations and retained snapshots of our vehicle records. Coverage is incomplete; an unreported change cannot be dated from these records.
Most recently recorded carrier for this plate
Mountain Line Inc Active
- USDOT
- 3558740
- MC
- 1194478
- Status
- Active
- Type
- Motor Carrier
- Based in
- Rock Springs, WY
- Power units
- 90
- Drivers
- 80
- Inspections (24 mo)
- 183
- Crashes (24 mo)
- 4
- Vehicle OOS rate
- 26.7%
Carrier recorded at the latest inspection in the available records (2026-03-12). This does not establish current ownership or confirm that the carrier still operates this vehicle.
View full carrier profile →Authority, insurance & bonds, safety scores, crash history, inspections and the full fleet list.This plate has also been operated by 1 other carrier (listed below).
What this means
License plate OK-DS6958 appears in FMCSA inspection records 2 times. Recorded on one vehicle: VIN 3H6KR4225T3180593 (2026 Great Dane Polar Tank Trailer). Operated by 2 different carriers (DOT numbers) over its inspection history. Most recent operating carrier: Mountain Line Inc (USDOT 3558740). Vehicle make on file: Great Dane (GRDN) (SEMI-TRAILER). No out-of-service violations are recorded under this plate in the available inspection records. Other violations may still be present.
About this plate
Commercial license plate OK-DS6958 (Oklahoma) appears in FMCSA roadside inspection records tied to one commercial vehicle. The most recent inspection activity under this plate was 2026-03-12. The latest inspection was in Texas, a Level II — walk-around inspection of the driver and the vehicle. That is outside the plate's issuing jurisdiction (Oklahoma).
Vehicle on this plate
This plate is associated with a single vehicle, a 2026 Great Dane Polar Tank Trailer — VIN 3H6KR4225T3180593 (semi-trailer).
Combined inspection & out-of-service record
Across all vehicles on this plate there are 2 inspections on FMCSA record. No out-of-service violations appear in the available records under this plate. This does not mean that every inspection was free of other violations.
Operators
2 carriers have operated vehicles under this plate (most recent first): Mountain Line Inc (USDOT 3558740) on 2026-03-12; Four Corners Transport Llc (USDOT 4173159) on 2026-03-12.