dotsearch.usCOS LLC
USDOT 2496282 · MC-1376430 · WILLISTON, ND Authorized
Also known as: USDOT 2496282 · DOT 2496282 · 2496282 · MC-1376430 · MC 1376430 · 1376430
COS LLC is a carrier registered with the FMCSA under USDOT number 2496282, based in WILLISTON, ND. It operates in interstate commerce. It holds active FMCSA operating authority under MC-1376430 and is currently Authorized to operate for hire. Its fleet includes 20 power units and 19 drivers. Its most recent FMCSA safety rating is Satisfactory.
FMCSA record
- USDOT Number
- 2496282
- MC / Docket Number
- MC-1376430
- Legal Name
- COS LLC
- DBA Name
- CASTLE OILFIELD SERVICES
- Entity Type
- Carrier
- USDOT Status
- Active
- Operating Authority
- Authorized
- Operation
- Interstate
- Operation Classification
- AUTHORIZED FOR HIRE
- Physical Address
- 501 48TH AVE W, WILLISTON, ND, 58801
- Mailing Address
- PO BOX 1472, WILLISTON, ND
- Phone
- (701) 572-1832
- CASTLEOIL.BOOKKEEPING@GMAIL.COM
- Power Units
- 20
- Trucks
- 20
- Total Drivers
- 19
- CDL Drivers
- 14
- Hazmat
- No
- Cargo Carried
- Liquids/Gases, Oilfield Equipment
- Safety Rating
- Satisfactory
- Safety Rating Date
- 2026-04-03
- Company Officer
- PENNY BROWN
- MCS-150 Date
- 2026-01-29
- Registered
- 2014-04-16
Frequently asked questions
What is COS LLC's USDOT number?
COS LLC's USDOT number is 2496282.
What is COS LLC's MC number?
COS LLC's MC (docket) number is MC-1376430 (also written MC-1376430, MC 1376430, 1376430).
Where is COS LLC located?
COS LLC is located at 501 48TH AVE W, WILLISTON, ND, 58801.
What is COS LLC's phone number?
The phone number on COS LLC's FMCSA record is (701) 572-1832.
What is COS LLC's email address?
The email address on COS LLC's FMCSA record is CASTLEOIL.BOOKKEEPING@GMAIL.COM.
Is COS LLC authorized to operate?
Yes - COS LLC currently holds active FMCSA operating authority (Authorized).
Is COS LLC still in business?
COS LLC's USDOT registration is Active according to the latest FMCSA data.
How many trucks does COS LLC operate?
COS LLC operates 20 power units and 19 drivers according to its latest FMCSA MCS-150 filing.
What is COS LLC's safety rating?
COS LLC's FMCSA safety rating is Satisfactory, issued 2026-04-03.
What cargo does COS LLC haul?
COS LLC is registered with the FMCSA to carry: Liquids/Gases, Oilfield Equipment.
Does COS LLC haul hazardous materials?
No, COS LLC is not registered to haul hazardous materials.
What other names does COS LLC operate under?
COS LLC also does business as (DBA) CASTLE OILFIELD SERVICES.
Who owns COS LLC?
The company officer listed on COS LLC's FMCSA record is PENNY BROWN.
When was COS LLC registered with the FMCSA?
COS LLC was added to the FMCSA registry on 2014-04-16.
Other carriers in ND
- BEN KRAFT TRUCKING LLC · USDOT 12891
- DAKOTA SUPPLY GROUP · USDOT 12999
- JERRY BECK · USDOT 22015
- THOMAS ARNDORFER · USDOT 22812
- JOHN F ARNEBERG · USDOT 22832
- MERCER-MORTON COOP TRANSPORT ASSN · USDOT 35201
Source: official FMCSA / SAFER public records. Verify critical details with the FMCSA SAFER system.