Cos LLC (MC1376430)
DBA Castle Oilfield Services
USDOT 2496282 · Active · Williston · ND
Authority record
- Role
- Motor carrier
- Status
- Active
- Docket
- MC1376430
- USDOT
- 2496282
- Authority types
- —
- Bond required
- —
- Cargo insurance required
- —
Census fleet
- Power units
- 20
- Drivers
- 19
- Operation
- Interstate
- Classification
- Authorized For Hire
- Census status
- Active
- Trucks
- 20
- FMCSA safety rating
- Satisfactory (20260403)
- MCS-150 mileage
- 251164 (2025)
- MCS-150 date
- 20260129
- Fleet size
- 20–23 power units
- Hazmat
- No
- Company officer
- Penny Brown
- Mailing address
- Po Box 1472, Williston, ND, 58802
Company Census counts only. Per-vehicle VIN and license plate are not in this public census join.
Insurance on file
- Form
- —
- Insurer
- —
- Policies
- —
- Max coverage
- —
About
Cos LLC is in the FMCSA Company Census as USDOT 2496282. census status Active. address 501 48th Ave W, Williston, ND, 58801. 20 power units. 19 drivers. Authorized For Hire. Interstate operation. FMCSA safety rating Satisfactory as of 20260403. Source: public FMCSA Company Census. Not an FMCSA endorsement.
How to verify
How do I verify Cos LLC?
Match the legal name and MC1376430 (USDOT 2496282) on the official FMCSA SAFER register. BrokerMafia republishes the public Motus and Company Census record and does not endorse the firm.
What authority does Cos LLC show?
Motor carrier. Status Active