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
Network & Fraud
Reincarnation chains, shared-VIN links, common domains and officers, and owner-group affiliations — the chameleon / double-broker signals that name-and-USDOT lookups miss.
No shared-VIN flow in the last 12 months
None of this carrier's trucks were inspected under another USDOT in the last 12 months — any shared equipment is historical, not active.
Show all-time history (1 truck · 2 carriers)
Across all inspections on record: USDOT 4355451USDOT 4381992
Shares a company officer with other carriers
penny brown — 4 carriers: USDOT 1157824USDOT 1320942USDOT 2074283
Capacity consistency· registered vs roadside-observed power units
Registered (MCS-150)2020
Observed (24 mo)55
Shared w/ other carriers11
Registered capacity materially exceeds what is observed roadside — the MCS-150 may be stale or the fleet under-utilized.
Shared-VIN cross-links· units inspected under more than one USDOT
| VIN | Carriers | Inspections | First seen | Last seen |
|---|---|---|---|---|
| 3C6UR5NL2JG315684View sourced platform decode | 3 | 6 | Feb 1, 2025 | Jul 20, 2026 |
Owner / group view· confidence: officer
Owner / group view
Affiliated authorities
Collapses 4 related authorities · joined by officer
- Authorities
- 4
- Combined power
- 23
- States
- 4
- Oldest authority
- Aug 7, 2003
- Active now
- 1
- COS LLC· viewingUSDOT 249628220PU
- WILLIAM BROWNUSDOT 11578241PU
- H 4 TRUCKING LLCUSDOT 20742831PU
- P M TRUCKING LLCUSDOT 13209421PU
Affiliated entities· hover to preview