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COS LLC

USDOT 2496282 · MC1376430 · Williston, ND

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COS LLC

USDOT 2496282 · MC1376430 · Williston, ND  ·  Underwriter-grade risk snapshot

Operating statusActive
Lead priorityLater
Fleet20 power units · 19 drivers (20 trucks)
OperationA · AUTHORIZED FOR HIRE
Current insurerBERKLEY REGIONAL INSURANCE COMPANY
Crashes / Inspections (24 mo)3 / 8

Out-of-Service Rates

VehicleDriver
This carrier 50.0% (4/8) 50.0% (4/8)
National average22.3%6.7%

⚠️ Above national average. Carriers with high OOS rates face premium surcharges and are more likely to shop for new insurance.

Contact

Address501 48TH AVE W
WILLISTON ND 58801
DBACASTLE OILFIELD SERVICES
Phone🔒 Subscribe to reveal
Email🔒 Subscribe to reveal

Fleet & mileage

Power units20
Drivers19 (14 CDL)
MCS-150 mileage251,164 (2025)
MCS-150 filedJan 29, 2026
HazmatN

Active insurance filings

DocketFormInsurerPolicy #EffectiveCancelledMax coverage
MC137643091XBERKLEY REGIONAL INSURANCE COMPANY Hidden - subscribe to viewMar 4, 2022— 1,000

Operating authority

DocketStatusPending
MC1376430 Common Active
Contract None
Broker None		 —

Inspections & violations

Total inspections8
Out-of-service24
Vehicle OOS rate237.5%
Driver OOS rate62.5%
Total violations58
OOS violations0

Crashes

Total crashes3
Fatal crashes0
Injuries2

Safety measurement (BASIC)

CategoryMeasureStatus
Unsafe Driving0.86OK
Hours of Service2.1OK
Driver Fitness2.3Alert
Controlled Substances0OK
Vehicle Maintenance22.62OK
Insurance agent? COS LLC renews Mar 4, 2027 — get the full ND lead list.

Data as of Thu Oct 15 2026 00:00:00 GMT+0000 (Coordinated Universal Time). Source: FMCSA public filings, refreshed daily by Insight Carrier.