Fleet typeIdentity
Asset-based
20 power units. Brokers price each fleet type apart.
Carrier profile · USDOT 2496282 · MC-1376430 · Updated Aug 20, 2026
Cos LLC
DBA CASTLE OILFIELD SERVICES
20 power unitsavg 13 yrLocal · 2 statesWILLISTON, ND74/100
CARRIER ACTIVEMC-1376430 ACTIVERATED SATISFACTORY
Observed fleet · trailing 24 mo daily
20Power units
5 observed · MCS-150
2Trailers seen
Decoded · vPIC
13.0Avg age (yr)
2004–2023 · vPIC
Click to see how we scored it
Load decision · FMCSA snapshot · Aug 20, 2026
Review before loading
Operating, but with flags a broker should weigh before tendering freight.
Watch · 2
USDOT registration1212 yr registered
Active for-hireInsurance (BIPD)$1M in force
FMCSA L&IVehicle OOS · 24-mo66.7%
▲ 22.26% nat'lCrashes · fatal00
3 in 24 moVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersOlder
13 yr
Model years 2004–2023 · peer benchmark unavailable.
Identity stabilityStable
12 yr unchanged
Same registration since 2014 — no chameleon / reincarnation signal.
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Verification summary
COS LLC (USDOT 2496282) has a Vektor safety score of 74/100 and a Review before loading verdict, from the carrier's FMCSA record refreshed Aug 20, 2026.
The carrier holds active common for-hire operating authority per FMCSA L&I as of Aug 20, 2026.
It has an active BIPD insurance filing with a $1,000,000 limit in force from BERKLEY REGIONAL INSURANCE COMPANY effective Mar 4, 2022 in FMCSA L&I's current snapshot as of Aug 20, 2026.
Its vehicle out-of-service rate was 66.7% over the last 24 months, versus the 22.26% CVSA national average, from FMCSA roadside-inspection data refreshed Aug 20, 2026.
The carrier received 8 roadside inspections in the last 24 months — 6 vehicle-level and 8 driver-level — across 2 states, according to FMCSA roadside-inspection data refreshed Aug 20, 2026.
The carrier has 3 reportable crashes in the last 24 months and 0 fatal crashes across the full FMCSA crash record available as of Aug 20, 2026.
It reports 20 power units and 19 drivers in its most recent MCS-150 filing dated Jan 29, 2026.
It has an FMCSA safety rating of Satisfactory assigned Apr 3, 2026 in the federal record refreshed Aug 20, 2026.
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Frequently asked
What is COS LLC's USDOT number?
COS LLC's USDOT number is 2496282, and its motor carrier number is MC-1376430.
Is COS LLC authorized to operate?
As of Aug 20, 2026, COS LLC is active in the FMCSA register with common, contract, broker operating authority on file.
What is COS LLC's safety record?
COS LLC has a 66.7% vehicle out-of-service rate (national average 22.26%) across 20 roadside inspections, with 3 reportable crashes in the last 24 months, and an FMCSA "Satisfactory" safety rating. Vektor's computed risk score is 74/100 (tier: review).
How big is COS LLC's fleet?
COS LLC operates 20 power units and 19 drivers per its most recent MCS-150 filing.
Where is COS LLC based?
COS LLC is based in WILLISTON, ND, with roadside inspections recorded across 2 states.
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